37 Engineering Side Hustles (Opportunity, Potential Income PLUS FAQs)

What Are Engineering Side Hustles?

Engineering side hustles are additional projects or jobs that engineers undertake alongside their main employment to earn extra income or explore personal interests. These side hustles can include freelance work, consulting, or developing and selling engineering-related products. For instance, an engineer might offer design services on platforms like Upwork, create and sell specialized engineering software, or even provide online courses. These endeavors not only provide financial benefits but also offer opportunities for skill development and professional growth. In essence, engineering side hustles allow engineers to use their experience in diverse ways beyond their primary job.

37 Engineering Side Hustles

2. Become A Part-Time Tutor For Engineer

Becoming a part-time tutor for engineering subjects is a fantastic engineering side hustle because it allows you to target students who find science, technology, engineering, and math (STEM) subjects challenging. You can help them overcome these difficulties by offering your online tutoring services. It involves providing guidance and support to students struggling with STEM subjects. You can start your tutoring journey on platforms like Chegg Tutors, Wyzant, or even by creating your own tutoring website.

According to a new Pew Research Center, many students shy away from pursuing STEM degrees because they perceive these subjects as too difficult, with 52% of adults citing this as the main reason. This creates a substantial market for engineering tutors who can simplify complex concepts and boost students' confidence in STEM. Furthermore, a recent survey conducted by KX reveals that more than 50% of U.S. students between the ages of 16 and 23 consider coding skills to be just as vital as foreign language skills for their future career prospects. Alarmingly, more than one-third of these students express a lack of access to educational coding programs. If you’re a software engineer proficient in coding, you can bridge this educational gap for individuals eager to learn to code.

When it comes to potential income, the average online tutor salary in the United States is approximately $58,937 per year, according to Salary.com. However, it's crucial to be aware of potential disadvantages. Tutoring demands patience and effective communication skills. Additionally, finding a consistent stream of students can be challenging. Keep these factors in mind as you explore this side hustle.

3. Start Repair Services

Starting a repair services business is a practical engineering side hustle that caters to a consistent demand for general maintenance and repair workers that offers you a promising customer base. Starting a repair services business involves offering repair and maintenance solutions for various equipment, appliances, or systems. It allows you to leverage your engineering skills and knowledge. You can begin your journey by setting up your repair service website or reaching out to local businesses in need of repair expertise.

When it comes to the opportunity, The U.S. Bureau of Labor Statistics projects an average of 152,400 job openings for general maintenance and repair workers annually over the coming decade. Many of these openings will emerge because of the need for replacements when workers switch careers or retire. This presents a substantial and consistent demand for your repair services.

For your potential income, ZipRecruiter reports an average hourly pay of $19.31 for repairmen in the United States. This wage can vary based on your location and expertise, but it offers a reasonable income source for you looking to earn extra cash. However, it's essential to consider potential disadvantages. Operating a repair services business may require physical labor, and there might be fluctuations in demand based on seasonality or location. It's crucial to assess these factors before diving into this side hustle.

4. Find Contractors Jobs Online

Finding contractor jobs online is a lucrative engineering side hustle because it allows you to apply your expertise to lead construction projects, and it caters to a growing market. As the number of construction businesses in the US continues to rise, with 3,787,470 as of 2023, there's a constant demand for skilled contractors. If you've built a strong portfolio in the construction field, you can offer your services to oversee and manage construction projects. Additionally, the states of California, Florida, and New York have the highest demand for contractors in the US, with 80,657, 60,042, and 49,602 construction businesses, respectively. This geographic insight can help you target your efforts more effectively, focusing on regions where your expertise is in demand.

To get started, you can explore websites and platforms like Upwork, Freelancer, or even industry-specific job boards to kickstart your journey as a contractor. Regarding potential income, the average contractor salary in the USA is $65,140 per year or $31.32 per hour, as reported by Telent.com. If you’re in an entry-level position, your pay start at $40,189 per year, while experienced contractors can earn up to $135,409 per year. This income potential makes contractor jobs an attractive side hustle option for engineers and sooner can be your full-time career. However, the contracting industry can be competitive, and securing contracts may require a robust network and a proven track record. Additionally, managing construction projects can be demanding and may involve long hours.

5. Offer Engineering Consulting Services

Offering engineering consulting services is an excellent engineering side hustle because you can tap into businesses and organizations seeking expert advice and solutions for engineering-related challenges. You can embark on this journey by establishing your consulting practice and reaching out to potential clients. You can check websites like LinkedIn and Upwork that can help you kickstart your consulting career. With the opportunity in this engineering side hustle. The demand for consulting engineers is projected to grow by 2% from 2018 to 2028, as reported by Zippia. This growth shows you a consistent need for engineering expertise in various industries. It presents you with opportunities to provide valuable insights and solutions.

When it comes to potential extra income you can make, the salary of an engineering consultant can vary significantly based on factors such as your work history, industry specialization, professional experience, and education level. On average, you can earn around $5,476 per month, according to Indeed. Nevertheless, building a consulting practice may take time and effort, and acquiring clients can be challenging. Additionally, managing client expectations and delivering solutions can be demanding. These challenges are worth considering as you pursue this side hustle.

6. Start A Blog (Write on Engineering Topics)

Starting an engineering blog is a rewarding engineering side hustle because you already have significant audiences, with 77% of internet users regularly reading blog posts, according to Impact Plus. This shows you a substantial readership for blogs, especially those focused on engineering topics. As an engineer, you can cater to this audience by sharing your expertise in your fields, whether in structure or software, through your blog.

To kickstart your engineering blog, you'll need a platform, and WordPress is an excellent choice. As reported by Website Builder, WordPress hosts over 455 million sites due to its ease of use and extensive functionality. It's a top pick for bloggers, including those covering engineering subjects. Also, you can take advantage of growing interest in engineering-related subjects among internet users. McKinsey's Technology Trends Outlook for 2023 indicates a threefold increase in interest in technical topics like quantum computing from 2021 to 2022. By creating valuable content on these trending topics, you can attract a dedicated readership.

If you’re interested in this engineering side hustle, bloggers making at least $2,000 per month often use ad networks like Mediavine or Adthrive, as highlighted by Small Biz Genius. You need to take note that effective ad management can significantly contribute to your revenue generation as you grow your engineering blog. However, writing detailed blog posts, especially on technical subjects like engineering, can be time-intensive. About 31% of blog posts take six hours or more to write, according to Website Builder. Moreover, approximately 33% of bloggers don't earn any money, highlighting the competitive nature of blogging.

7. Become A Freelance Technical Writer

Becoming a freelance technical writer is a promising engineering side hustle because it involves translating complex engineering concepts into understandable language for a broader audience. You can cater to a wide range of clients, including technology companies, engineering firms, and publications. You can create profiles on freelancing platforms like Upwork, Freelancer, or Fiverr to showcase your skills and attract potential clients. These platforms offer a convenient way to connect with businesses and individuals seeking technical writers. In terms of opportunity, employment of technical writers is projected to grow by 7% from 2022 to 2032, faster than the average for all occupations, as reported by the US Bureau of Labor Statistics. This growth demonstrates a consistent demand for professionals who can bridge the gap between technical expertise and layman's terms. As an engineer, you're well-equipped to meet this demand.

When it comes to how much extra income you can generate, freelance technical writers earn more than the average freelance writer. On average, general freelance writers make around $61,935 annually or $30 per hour. In contrast, freelance technical writers earn an average of $70,191 per year or $34 per hour, according to ZipRecruiter. Your engineering background and ability to communicate technical information effectively can lead to your higher earning potential in this engineering side hustle. However, as of 2021, there were 55,400 technical writers employed, according to the U.S. Bureau of Labor Statistics. This indicates competition, so you'll need to differentiate yourself and build a strong portfolio to secure tons of freelance gigs.

8. Apply As Substitute Teacher

Becoming a substitute teacher is a viable engineering side hustle because you can step in to cover teacher absences in K–12 schools, providing stability and continuity in the classroom. Your engineering background equips you with problem-solving skills and adaptability, which are valuable traits in managing a classroom and delivering educational content effectively. To start on this side hustle, you can start by reaching out to local schools or school districts. Most educational institutions have substitute teacher application processes that require background checks and qualifications verification. Additionally, there are apps and websites like Swing Education, SubSidekick, and Frontline Education that connect substitute teachers with schools in need of their services.

To support the demand, each year in the United States, close to 600 thousand substitute teachers cover over 30 million teacher absences in K–12 schools. This shows you a consistent demand for substitute educators, and your ability to bring problem-solving and technical skills to the classroom. For potential income, substitute teachers can earn anywhere from $75 to $200 for a full day's work, as reported by We Are Teachers. The pay rate may vary depending on factors such as your location, qualifications, and the duration of the assignment. Given your engineering background, you may be eligible for higher pay rates, especially when covering specialized subjects that are related to your expertise. However, substitute teaching can be challenging. It requires adaptability and classroom management skills. It may also involve unpredictable schedules and short-notice assignments, which can affect your availability for other commitments.

9. Do Freelance CAD Work

Doing freelance Computer-Aided Design (CAD) work is an exciting engineering side hustle because of the growing demand in job openings. The Bureau of Labor Statistics indicates that CAD (Computer-Aided Design) is experiencing a growth rate of approximately 7%, aligning with the average for most occupations. This signifies a healthy job market for you and CAD professionals that offers income opportunities. In particular, AutoCAD, a prominent CAD software, presents you a promising career path. The world of CAD presents engineers with an opportunity to leverage your technical expertise and design skills to earn extra income. The demand for CAD services spans various industries, from architecture and manufacturing to civil engineering and electronics. As companies increasingly rely on CAD for design and planning, you can tap into a consistent stream of projects. This allows you to work on diverse assignments, enhancing their skills and income potential.

The income potential in freelance CAD work varies based on factors such as your skill level, years of experience, and geographical location. ZipRecruiter data reveals monthly earnings ranging from $2,167 (lowest) to $7,208 (highest) for CAD professionals. If you're looking for regions with high employment rates for Drafters, focus on states like Texas, California, Florida, and New York. These states offer a wealth of opportunities for freelance CAD work, potentially translating to higher income. While freelance CAD work offers promising income prospects, it's essential to acknowledge potential challenges. Competition in the freelance market can be fierce, requiring engineers to establish a strong portfolio and reputation. Moreover, project timelines and client demands may vary, affecting work-life balance. Engineers pursuing freelance CAD work should also invest in software and hardware to stay competitive, which can entail upfront costs.

10. Create Your Own Engineering App (Software Development)

Creating your own engineering app or being a software developer is a nice side hustle for engineers because it offers engineers the opportunity to design and create applications that cater to specific user needs. Whether it's developing a mobile app or crafting software solutions for businesses, the demand for skilled developers remains robust. The tech industry continually evolves, it presents you with opportunities to work on innovative projects. The U.S. Bureau of Labor Statistics (BLS) anticipates that software developer job opportunities could surge by 22% from 2019 to 2029. This translates to substantial job growth, assuring you of ample openings in the field.

Moreover, Glassdoor reports indicate that the average annual salary for software developers in the United States stands at $105,631. As a software developer, you not only enter a thriving job market but also enjoy the potential for a rewarding income. If you opt to develop your own applications, the earning potential can be significant. Core Brew highlights that 25% of Apple developers generate over $5,000 monthly, while 16% of Android developers achieve the same income level. Additionally, the app industry has witnessed staggering revenue figures. Games like "Clash of Clans" by Developer Supercell earn $1.2 million per day, while "Candy Crush" makes about $884,676 daily through in-app purchases alone. These statistics underline the substantial income possibilities in software development.

While software development offers tremendous opportunities for you to earn side income, building a successful app or software product requires a thorough understanding of coding languages, design principles, and user experience. If you are looking to enter this field, you need to invest time in learning and refining these skills. Additionally, the competitive nature of the app market means that not all applications achieve significant financial success. 

11. Start 3D Printing Services

Starting 3D printing services is a rewarding engineering side hustle due of growing numbers of companies who use 3D printing for their businesses. Over 68% of companies that employ 3D printing use it primarily for prototyping and pre-series manufacturing, according to Toner Buzz. This indicates a substantial demand for 3D printing services and you can cater to businesses and individuals looking to bring their innovative ideas to life through prototypes or customized. To start, you'll need a 3D printer and expertise in using 3D modeling software. You may consider popular brands like Creality, Prusa, and Anycubic that offer accessible options for beginners. Additionally, mastering 3D modeling software, such as Blender, Tinkercad, or Fusion 360, will be essential. Also, you can join online tutorials and courses can help you acquire the skills. You can offer your 3D printing services through platforms like Etsy or Upwork, or even establish your own website to showcase your work and attract clients.

The income potential in 3D printing is noteworthy. As per Payscale, the average salary for a 3D printing business owner can range from $40,000 to $130,000 annually. Your earnings will depend on factors such as the complexity of projects, client base, and the scale of your operations. With dedication and the ability to deliver high-quality 3D printed products, you can establish a lucrative income stream. While 3D printing offers promising income prospects, setting up a 3D printing business comes with initial costs that typically range from $10,000 to $50,000, according to FinModelsLab. This includes expenses for purchasing a 3D printer, materials, and software.

12. Teach Engineering Tutorials On YouTube

Teaching engineering tutorials on YouTube is a nice engineering side hustle because the growing percentage of user that use the platform on educational purpose. A Pew research study in 2018 revealed that 51 percent of YouTube users turn to the platform to learn new things. This proves a substantial audience eager to acquire knowledge through YouTube videos. Also, Think With Google also reports that users are three times more inclined to watch tutorial videos on YouTube than read product instructions. As an engineer, you can tap into this demand by creating educational content on engineering topics on YouTube. To begin your journey as a YouTube educator, you can take inspiration from successful channels like The Engineering Mindset, Veritasium, SmarterEveryDay, and Engineerguy. These channels offer valuable insights into effective content creation and audience engagement. You'll need basic video recording equipment, which can include a smartphone or webcam, video editing software, and a YouTube channel to upload your tutorials.

As for potential income additional money, according to FinanceBuzz, the average YouTube income in the United States in 2022 was approximately $1,154 per week or $4,616 per month. Your earnings on YouTube depend on the number of your views, ad revenue, and engagement with your content. By consistently producing high-quality engineering tutorials and building a dedicated audience, you can increase your income over time. However, building a subscriber base and gaining traction on YouTube may take time and effort. Additionally, YouTube's monetization policies and algorithms can affect your income. Ad revenue may fluctuate, so it's wise to diversify your income sources, such as through sponsorships or merchandise sales.

13. Start An Engineering Podcast

Starting an engineering podcast is a wise engineering side hustle because it offers you an opportunity to connect with a growing audience of potential listeners who are eager to learn from your insights. According to Oberlo, the podcasting landscape is expanding rapidly, with about 464.7 million podcast listeners projected for 2023. Many of these listeners tune in to learn, making this an ideal platform for engineers to share their expertise. According to Pew Research Center, 88% of podcast listeners use this medium for learning, aligning perfectly with the knowledge you can offer. To get started, you'll need to create your own engineering-focused podcast. You can find valuable resources and platforms like Anchor, Podbean, or Libsyn to help kickstart your journey in this side hustle.

In terms of how much additional money you can earn, the numbers vary. DemandSage reports that an average podcast can generate anywhere from $50 to $1000 per month. Riverside fm suggests that with around 10,000 downloads per episode, you can expect to earn between $500 to $900. Also, note that highly successful podcasts can even rake in annual incomes of up to $30 million. However, it requires dedication and consistency. Establishing substantial audience can take time, and not all podcasts reach the same levels of success. Additionally, competition in the podcasting space is fierce, so standing out can be challenging. According to Listen Notes, there are currently over 3.02 million podcasts. Additionally, Podcast Index reported another estimate figure which is closer to 4.2 million podcasts.

14. Develop Product Prototypes

Developing product prototypes is a promising engineering side hustle because of the growing demand for product prototyping. Many businesses are turning to prototyping to cut manufacturing costs, and this trend is expected to positively affect the global product prototyping market in the coming years. This side gig involves creating physical or digital models of products to test and refine designs. To get started, you can explore platforms like Autodesk Fusion 360 or SolidWorks for digital prototyping, or invest in a 3D printer for physical prototypes. These tools can be your starting point in this side hustle.

Now, for the opportunities. The field of product prototyping is on the rise, especially in the 3D Printing & Rapid Prototyping Services industry in the US. Between 2017 and 2023, it has witnessed substantial growth at an average annual rate of 9.4%. For potential income, the average salary for a prototype designer in the US, according to Glassdoor, is $69,306 per year. However, product prototyping demands precision and attention to detail. Mistakes in prototyping can lead you to costly errors, both in terms of time and materials. Additionally, obtaining the equipment and software for prototyping may require an initial investment that can be $1,000 or more. 

15. Offer Career Counseling for Engineering Students

Offering career counseling for engineering students is a great engineering side hustle because of the growing demand for career coaching services. According to the United States Department of Labor Statistics’ Occupational Outlook Handbook, the field of career coaching is projected to grow by 8% from 2018 to 2028, which is faster than the average for all occupations. This growth is driven in part by increasing student enrollment in schools, leading to a rising need for career counselors. It involves guiding engineering students in making informed career decisions, helping them navigate the job market, and providing valuable insights based on your own engineering experience. To start, consider leveraging platforms like LinkedIn, where you can connect with engineering students. You can also explore websites such as Handshake, which is popular among students seeking career opportunities.

Career counseling for engineering students not only aligns with your engineering background but also offers a chance to earn extra income. The U.S. Bureau of Labor Statistics (BLS) reports that educational, guidance, and career counselors earn a mean annual wage of $60,510 per year. This income potential makes it an attractive side hustle for engineers looking to leverage their expertise. However, according to Zippia, there are over 10,881 career counselors currently employed in the United States. This shows that the field is competitive, and establishing a strong reputation and client base may require time and effort. Additionally, staying updated with the latest career trends and counseling techniques is crucial to providing valuable guidance to engineering students.

16. Own Car Repair Services

Owning a car repair service is a good engineering side hustle due to the sheer number of vehicles on US roads. In 2022 alone, there were a staggering 284 million vehicles plying the nation's roadways, as reported by Statista. This figure underscores the constant demand for automotive maintenance and repair services. It provides a substantial customer base for your venture. It involves leveraging your technical expertise to diagnose and address mechanical issues in automobiles. To kickstart your journey in this field, consider exploring digital platforms like RepairPal or AutoMD, which can serve as valuable resources for both aspiring and experienced car repair service owners.

In terms of opportunity that this engineering side hustle offers. According to forecasts, general auto repair revenue in the United States will reach a substantial $58.7 billion by 2024. This signifies a thriving industry with some room for growth and profitability. It makes it an attractive avenue for you seeking to supplement their income. Speaking of income, ZipRecruiter reports that the average annual pay for a repair owner in the United States is $82,367. This income potential highlights the financial rewards that you can make if you choose to venture into the car repair services sector. However, car repair services demand a significant investment in equipment, tools, and workspace, which can be a substantial upfront cost. Additionally, staying updated with evolving automotive technologies and ensuring compliance with industry regulations requires ongoing commitment and dedication. 

17. Offer Coding Classes

Offering coding classes is a profitable engineering side hustle due to the robust demand for coding skills in today's job market. Coding jobs are in high demand, and the Bureau of Labor Statistics (BLS) projects a significant growth rate of 13% in computer and information technology employment by 2030. This presents you with a substantial audience of individuals eager to acquire coding expertise. It involves leveraging your engineering knowledge to teach coding skills to aspiring individuals. To kickstart your journey in this field, consider exploring online platforms like Udemy, Coursera, or edX, which provide a convenient starting point for creating and hosting coding courses.

When it comes to how much side income you can make, Noble Desktop reports that coding classes can lead participants to suitable career tracks. The costs for coding classes vary, with general expenses ranging from $42,000 - $60,000 at colleges and universities and $10,000-$20,000 at bootcamps and certificate programs. This variation in costs provides flexibility for engineers to tailor their coding classes to different target audiences. However, competition in the coding education sector is fierce, with numerous coding bootcamps, online courses, and platforms vying for students' attention. 

18. Provide Resume Writing Services For Engineers

Providing professional resume writing services is a wise engineering side hustle because you can tailored to fellow engineers. Research from Zippia indicates that 68% of job seekers who engage a professional resume writer secure a new job within 90 days. Notably, professionally crafted resumes are not just interview magnets; they can also boost your earning potential by 7% to 32%. This reflects a substantial demand for resume expertise among engineers aiming to advance their careers.

This side gig involves leveraging your engineering background to create compelling resumes that highlight an engineer's skills, achievements, and qualifications effectively. To start, you can explore LinkedIn, where engineers often seek job opportunities and career advice. These platforms can serve as a launchpad for your resume writing services. When it comes to potential income, EduReviewer reports that professional resume writing services for engineers can cost anywhere from $100 to $2500. This price range offers flexibility for engineers to set rates that align with their level of expertise and the quality of service provided. However, providing resume writing services requires meticulous attention to detail and a deep understanding of engineering roles and qualifications. 

19. Open An Engineering Products Store

Opening an engineering products store is a nice engineering side hustle because of the huge number of online shopping habits. A whopping 76% of U.S. adults shop online, and many still prefer in-store shopping. According to Zippia, with over 228,911 engineers currently employed in the United States. This number can be your substantial pool of potential customers. Plus, GrowthDevil reveals that in 2023, the computer and consumer electronics category in the U.S. accounted for an impressive $219.33 billion in sales. To get started, you'll need to set up an online store. Most online stores are powered by platforms like WooCommerce or Shopify, making it accessible for engineers, as Tidio. These platforms provide the tools you need to showcase and sell engineering-related products. You can leverage their technical knowledge to curate a unique selection of products that cater to your fellow engineers. This can include anything from gadgets and tools to specialized components.

When it comes to profitability, according to GrowthDevil, the $219.33 billion in sales within the computer and consumer electronics category shows there's a significant market to tap into. Your income will depend on factors like your product selection, marketing efforts, and customer base growth. Additionally, Markin stated that the number of e-commerce sites worldwide has nearly tripled between 2019 and 2023, totaling over 26.5 million, with the U.S. accounting for more than half of them. This fierce competition means you'll need to stand out and continually adapt to changing market dynamics. Additionally, managing an online store demands time and effort, which can be challenging if you already have a full-time engineering job.

18 Non-Engineering Related Side Hustles

20. Take On Remote Data Entry Jobs

Taking on remote data entry jobs is a famous non-engineering side hustle because it involves inputting information into databases, spreadsheets, or other digital formats. While it may not require engineering expertise, it demands precision and attention to detail – qualities engineers often possess. You can cater to businesses and organizations seeking accurate data entry services. You can check various websites and platforms, such as Upwork, Freelancer, and Remote.co to browse some side gigs. These platforms allow you to create profiles to showcase your skills and attract clients. Additionally, some companies offer specialized data entry roles that may align with your engineering background. Additionally, the job outlook for data entry is promising, with the federal Bureau of Labor Statistics projecting a 3% growth rate over ten years ending in 2026. This shows a consistent demand for data entry services, and your precision and attention to detail can set you apart in this field.

Regarding potential income you can make, data entry operators in the United States earn an average hourly rate of around $13, according to PayScale. However, certain industries offer higher pay rates for remote data entry jobs. For instance, as per VirtualVocations, the best-paying work from home data entry jobs can be found in sectors like electronics and appliance stores ($24.14 per hour), financial services ($22.87 per hour), natural gas distribution ($22.58 per hour), postal service ($22.32 per hour), and aerospace manufacturing ($20.91 per hour). Your engineering background may enable you to excel in these industries, potentially leading to higher earnings. However, remote data entry jobs can be repetitive and may not fully utilize your engineering skills. Additionally, the job market for data entry can be competitive, so securing high-paying gigs may require persistence and differentiation.

21. Become An App Tester

Becoming an App Tester is a unique non-engineering side hustle because of the constantly growing app market. In fact, Business of Apps stated that the App Store adds around 1,000 new apps daily, while Google Play introduces about 1,300 new apps every day. It leads to the high demand for software developers and testers. The US Bureau of Labor Statistics projects a 25 percent growth in employment for software developers, quality assurance analysts, and testers from 2022 to 2032. To get started, as an engineer, you'll assess the functionality, performance, and usability of mobile applications. You can begin your journey by exploring testing tools like HP ALM, Team Foundation Server, PractiTest, or Xray, which are commonly used by testers as per PractiTest. These tools will help you conduct comprehensive tests and ensure app quality.

You can capitalize on this side hustle by leveraging your analytical skills and attention to detail. With the app industry continually expanding, there's a constant need for testers to identify and rectify issues, ensuring apps function smoothly. The statistics indicating a 25 percent growth in related employment prospects highlight the industry's demand for skilled testers. Moving on to potential income, app testing can be financially rewarding for engineers. According to ZipRecruiter, the average salary for mobile application testers in the United States as of November 2023 is $50.42 per hour or $104,883 annually. However, you need to stay updated with evolving app technologies and testing methodologies. The rapid pace of change in the tech industry means testers must continually adapt their skills. Additionally, project timelines and deadlines in app development can sometimes lead to high-pressure situations that may require managing workload effectively.

22. Start Real Estate Investing

Starting real estate investing is an ideal non-engineering side hustle because it involves purchasing properties with the goal of generating income or achieving appreciation in property value. These regions offer specific target markets for engineers looking to invest. You can begin your journey into this side hustle by exploring real estate platforms like Zillow, Realtor.com, and Redfin. These websites provide property listings and valuable market research insights. Additionally, investment apps such as Fundrise and Roofstock specialize in real estate investments, offering opportunities in both residential and commercial properties.

For those interested in a more diversified approach, Real Estate Investment Trusts (REITs) offered by companies like Vanguard and Blackstone allow investors to take part in real estate portfolios. Also, according to Savill, prime multifamily and logistics properties, particularly in regions like the Northeast, Southeast, Southern California, New Jersey, and South Florida, are expected to perform well. The statistics from Savills highlight specific regions where the real estate market is expected to perform well. It provides you with a clear target audience for their investment efforts. By conducting thorough research and using online platforms and apps, engineers can tap into these opportunities and make informed investment choices.

When it comes to potential income, Real Estate Investing offers several avenues for engineers to earn. The national median home price, as of September 2023, rose slightly by 0.41% year-over-year, reaching $429,500 (Ramsey Solutions). This suggests the potential for income through property appreciation, which can yield significant returns over time. Rental income from investment properties can also contribute to steady cash flow, making real estate investing an attractive option for supplemental income.

However, it's crucial to be aware of potential disadvantages. The real estate market in 2023 is influenced by economic uncertainty, fluctuating interest rates, and developing work arrangements, as indicated by CBRE (2023). These factors can affect investment decisions and require a cautious approach. Additionally, real estate values and rental incomes can be volatile, subject to various economic and market factors. Engineers considering this side hustle should be prepared for the inherent risks and uncertainties associated with real estate investments.

23. Resell Furniture Returns

Reselling furniture returns is a practical non-engineering side hustle because it offers you the opportunity to cater to potential customers looking for secondhand goods. This side hustle involves purchasing furniture returns and reselling them to individuals seeking affordable and sustainable alternatives to new furniture. If you’re interested in this venture, you can start by exploring online platforms and apps such as Craigslist, Facebook Marketplace, or dedicated resale apps like Letgo. These platforms provide a convenient starting point for sourcing and selling furniture returns, making it accessible for engineers.

In the United States, a staggering 82% of Americans, approximately 272 million people, are engaged in buying or selling second hand items according to GlobalData. While ecommerce is often associated with clothing resale, research from OfferUp CEO Todd Dunlap reveals that 76% of pre-owned items fall into categories like electronics, furniture, home goods, home improvement, sporting goods, outdoor equipment, and auto parts. You can leverage the substantial demand for secondhand goods, especially in the furniture category, to your advantage. With a significant portion of the population participating in the secondhand market, you can identify and target potential customers seeking quality furniture at lower prices.

Moving on to potential income, the average annual revenue for secondhand furniture stores in the United States typically ranges from $100,000 to $500,000, according to industry reports by FinModelsLab. However, it's important to note that achieving this income level often requires a full-time commitment and dedicated effort. Additionally, this revenue range is typically associated with well-established stores in the resale industry. Reselling furniture returns may require storage space and logistical considerations. Engineers may need to invest time in sourcing, cleaning, and refurbishing furniture items, which can be time-intensive. 

24 Accept Customer Interviews (Join User Interview)

Accepting customer interviews through platforms like User Interview is a good side hustle for engineers because of its substantial participant pool. Use Interview has over 87,000 participants paid in the last year. It's your chance to contribute your insights and be compensated for your valuable time. Participating in customer interviews involves sharing your opinions and feedback with researchers and top brands like Adobe, Spotify, Pinterest, Intuit, Airbnb, and Shopify. These companies value your input and will offer fair incentives for your time.

If you want to get started, it is straightforward. You can create your profile on the platform and begin browsing studies that pique your interest. User Interview will also send you suitable studies via email. Applying to studies is quick and easy, often taking less than a minute to complete. Once approved, you can choose a session time that works for you, take part in the interview, and receive payment within a few days. Your technical expertise can provide valuable insights to researchers and companies, making your feedback highly sought after. With over 2,500 studies launching every month, there's a continuous flow of opportunities to participate in interviews and share your expertise (User Interview).

When it comes to potential income, the average study pays over $65, providing a fair compensation for your time and feedback. This income can be a valuable addition to cover some of your finances, especially as you engage in more interviews and share your opinions with top brands. The more studies you apply to, the more opportunities you have to earn as per User Interview. However, customer interviews may not always align with your availability or interests, and there's no guarantee of being selected for every study you apply to. Additionally, participating in interviews requires effective communication skills and the ability to convey your insights clearly to researchers. 

25. Enter Photography Business

Entering the photography business is a lucrative side hustle for engineers because it offers a wide range of potential customers, from individuals seeking portrait photography to businesses requiring commercial and product photos. Starting a photography business involves capturing images for clients, whether it's portraits, events, products, or commercial work. You can begin your journey by investing in a good camera and learning photography techniques through online courses or tutorials. Additionally, there are photography apps and websites like Adobe Lightroom and Shutterstock that can aid in editing and selling photos, making it accessible for engineers.

When considering potential income, it's essential to understand that the earnings in photography can vary widely based on factors like specialization, client base, and location. According to ZipRecruiter, the $46,446 median wage provides a baseline, but ambitious engineers might earn more through dedication and effective business strategies. However, the photography industry in the United States is competitive, with 248,428 photography businesses as of 2022, representing a 5.2% increase from the previous year, as per report by IBISWorld. Additionally, the industry has faced challenges due to economic conditions and competition from smartphone cameras. You should prepare for competition and consider unique selling points to differentiate themselves in the market.

26. Start Online Arbitrage

Starting Online Arbitrage (OA) is a viable side hustle for engineers because it involves buying products from online retailers at discounted prices and reselling them at a profit on platforms like Amazon, eBay, or Facebook Marketplace. This hustle caters to individuals seeking cost-effective deals online that presents you an opportunity to tap into this market. You can begin by searching for discounted or clearance products on online retail stores such as Target.com or Walmart.com. After identifying potential products, you cross-check the same items on Amazon to evaluate their resale potential. If the profit margin is favorable, you can purchase the products and list them for sale on Amazon immediately or repackage and ship them to Amazon's fulfillment centers (FBA).

The statistics from Jungle Scout report that 55% of OA sellers earn less than $5,000 per month, but 16% manage to earn between $1,000 and $5,000. Moreover, 54% of OA sellers achieve profit margins of 16% or higher. You can utilize these statistics to set income goals and monitor your progress in the OA venture. When it comes to profitability, OA offers a variable earning potential. You can earn based on the number of products they source and resell. While the statistics provide insights into different income brackets, it's important to note that OA income can fluctuate, and success depends on factors such as product selection and pricing strategy. Also, online arbitrage involves risks related to product quality, competition, and marketplace changes. You should be cautious when sourcing products and monitor market trends to stay competitive. Additionally, this side gig requires initial capital for purchasing inventory, which may not be suitable for everyone. 

27. Visit JustAnswer and Earn

JustAnswer offers an easy way for engineers to earn extra cash as side hustle because with over 16 million questions answered since 2003. JustAnswer connects customers with experts, including doctors, lawyers, mechanics, and more, 24/7. This presents you with a chance to leverage your expertise and offer assistance in technical and engineering-related inquiries. To delve into the opportunity, you can earn a flexible income ranging from $2,000 to $7,000 per month by becoming experts on the platform. If you possess the qualifications and experience in specific categories, you can monetize your knowledge by answering questions online. The flexibility is a significant advantage; you can set your own hours and work from anywhere. JustAnswer payments are convenient, you have options like direct deposit, PayPal, or Venmo (US only).

JustAnswer's expert categories cover a wide range of fields, making it relevant for engineers. These categories include veterinary and animal behavior, legal, medical, wellness, mental health, cars, and tech support. However, while JustAnswer provides a platform for experts to earn, your earnings may not be consistent, and competition among experts exists. Additionally, the verification process ensures that only qualified professionals are accepted, so you need to meet the platform's criteria.

28. Join A Ride Sharing App

Joining a ride sharing app is a straightforward side hustle due to the popularity of usage of ridesharing apps in Us. To get started, engineers can sign up with popular ride sharing platforms like Uber, Lyft, Via, Scoop, Hitch, or Bolt. These apps provide an easy entry point into the world of ridesharing, allowing engineers to use their vehicles to transport passengers and earn money. Research by the Pew Research Center reveals that 36% of Americans have used a ridesharing app, and 15% use these services every week. This means there's a substantial customer base seeking transportation services, creating an opportunity for engineers to cater to this demand. You can take advantage of the growing popularity of ridesharing services, as indicated by the statistics. With millions of Americans using these apps regularly, there's a consistent demand for reliable transportation.

In terms of potential income, it's important to note that earnings as a rideshare driver can vary. According to The Street, after expenses and the app's commission, drivers for services like Uber and Lyft typically earn between $8.55 and $11.77 per hour. You can potentially boost your earnings by working during peak hours, in areas with higher demand, or by providing excellent service to earn tips. While it may not be a path to get rich quick, it can serve as a reliable source of supplemental income.

29. Self-Publishing on Amazon KDP

Self-publishing your work on Amazon KDP (Kindle Direct Publishing) is a promising engineering side hustle because it has a wide range of genres, from novels to cookbooks, available for publication, you can cater to a diverse audience. To get started, sign up on the Amazon KDP platform, where you can upload and sell your books. The opportunity here is substantial. Amazon reported that KDP had over 115 million active customers in 2021, and more than 200 million books were sold through the platform. This means there's a vast and active audience waiting to discover your engineering-related content.

Self-publishing on Amazon KDP is an effective way to generate extra cash to cover some of your bills. In 2019, KDP authors collectively earned over $300 million through Kindle Unlimited, and over 1,000 authors made over $100,000 in that year alone. According to About Amazon, the number of authors earning $50,000 or more in royalties with Kindle Direct Publishing increased by 40% over the past two years. These statistics highlight the earning potential for you if you can publish quality content related to your expertise. However, it's important to know that Amazon's KDP platform is highly competitive, with over 1 million authors using it for publishing. This means that while there's a substantial audience, there's also stiff competition.

30. Become A Web Developer

Becoming a web developer is an excellent engineering side hustle due to the demand for web developers is on a significant upswing. According to the U.S. Bureau of Labor Statistics (BLS), the field of web development is expected to grow by 23% nationally between 2021 and 2031. This robust growth indicates a steady stream of job opportunities. Moreover, the way people perceive businesses is closely tied to their online presence. GoodFirms reports that a substantial 38.5% of users judge a business based on its website's initial appearance. This highlights the critical role web developers play in creating visually appealing and user-friendly websites. Additionally, a poorly designed website can drive away potential customers, as indicated by slideshare, where 38% of people admit to stopping interactions with such sites.

Web development also offers the potential for a lucrative additional income. In 2021, the median salary for web developers was reported at $77,030, according to US News Money. The top 25% of earners made $100,670 that year, while the lowest-paid 25% still earned a respectable $51,100. This income potential makes web development an attractive side hustle option for you while pursuing your engineering career. You can start by learning essential web development languages like HTML, CSS, and JavaScript. Also, you may enroll on some of the online platforms like Codecademy, Coursera, or Udemy to access comprehensive web development courses and tutorials. While web development presents numerous advantages, one potential drawback is the highly competitive nature of the field. You may face stiff competition from other developers, both experienced and newcomers. To be successful, continuously improve your skills and prioritize building an impressive portfolio to stand out in this competitive field.

31. Start Knife Sharpening Business

Starting a knife sharpening business offers engineers a promising side hustle opportunity with a substantial demand. According to Grand View Research, the need for knife sharpening services is significant, driven by increasing urbanization and the desire for well-maintained kitchen tools among households. Additionally, the commercial segment, including hotels, restaurants, and barbershops, is poised for rapid growth. You must understand the importance of using the right tools. Investing in high-quality sharpening equipment is crucial. There are various knife sharpening systems available, such as whetstones, electric sharpeners, and guided sharpening systems. You can also conduct market research to identify the target customer base. Focus on households, professional kitchens, and barbershops.

A knife sharpening business can be quite profitable. According to Side Hustle Nation, earnings can vary, but it's possible to earn between $30 to $60 per hour. Some individuals have reported monthly earnings of up to $1,500 as a side hustle. This income potential makes it an attractive venture for engineers looking to supplement their earnings. However, consider the physical demands of the job. Sharpening knives requires repetitive motions, which can strain muscles and joints. 

32. Become A Yoga Instructor

Becoming a yoga instructor is a unique side hustle for engineers because of a substantial customer base . There are over 36 million Americans practicing yoga as of 2016, up from 20.4 million in 2012, according to a survey by Yoga Alliance and Yoga Journal. To kickstart your journey as a yoga instructor, you'll want to explore online platforms that cater to this niche. Also, you can check websites like Zoom, Thinkific, Kajabi, Uscreen, Mindbody, and Udemy to offer various opportunities to teach yoga online.

Becoming a yoga instructor is a fun way to generate more income. Yoga instructors can earn between $31,000 to over $100,000 per year, as per ZipRecruiter. The exact figure depends on factors such as your experience, location, clientele, and whether you choose to work full-time or part-time. It's a flexible side hustle that allows you to supplement their income or even transition into a full-time yoga career if you wish. However, building a personal connection with online students can be more challenging compared to in-person classes. Also, technical issues may arise for both instructors and students during online sessions, and the online yoga market is highly competitive. 

33. Produce And Sell Products Online (Sell On Etsy Or Amazon)

Producing and selling products online through platforms like Etsy or Amazon is a wise side hustle for engineers because you can tap into huge potential customers to each marketplace. Amazon boasts a whopping 310 million customers worldwide, while Etsy, with 81.9 million active buyers. It offers a substantial market for handmade and unique products. You can take on advantage of this extensive audience by selling your creations or sourcing products to sell. To seize this opportunity effectively, you can explore platforms like Etsy and Amazon Seller Central. Etsy is renowned for handmade and creative goods, making it an excellent choice for engineers with artistic or crafty inclinations. Amazon, on the other hand, caters to a wide range of products, allowing you to diversify your offerings. These platforms provide the necessary tools and resources to set up shop and start selling.

Selling on Etsy and Amazon can be a fun way to earn extra cash. According to Sale Samurai, successful Etsy sellers earn an average of $43,000 to $46,000 per year, providing a solid foundation for income growth. Top earners on Etsy can even make over $65,000 per month. Meanwhile, new Amazon sellers, as per Jungle Scout, are raking in nearly $30,000 in annual profits. For engineers, this means a chance to generate a substantial supplemental income or potentially transition into full-time entrepreneurship. However, it's essential to be aware of the competition. Etsy has 7.3 million active sellers, and Amazon boasts a staggering 9.7 million global sellers, with 1.9 million actively selling. You should be prepared for a competitive environment and invest time in building your brand, marketing, and customer service to stand out and thrive in this dynamic marketplace.

34. Become An Engineering SEO Consultant

Becoming an engineering SEO Consultant is a top-tier side hustle for engineers because SEO is considered as a dominant source of leads. With most marketers recognizing the value of inbound strategies, there's a substantial market waiting for you to be tapped. According to BrightEdge, 60% of marketers state that inbound methods like SEO are their top source of leads. Surprisingly, only 30% of small businesses use SEO, as reported by The Manifest. By providing SEO consulting services, engineers can help businesses improve their online presence, generate more leads, and ultimately boost their revenue. You can exercise your technical skills to optimize websites and content for search engines and help businesses improve their online visibility. To get started, you can explore platforms like ZipRecruiter, Fiverr, or Upwork, where you can find SEO-related gigs and projects to kickstart your journey in this side hustle.

Speaking of income, ZipRecruiter reveals that the average hourly pay for an SEO consultant in the United States is $45.91. This means that you can earn a decent income by offering your SEO expertise. Moreover, as you gain experience and build a solid portfolio, you can demand higher rates. However, you need to stay updated with ever-changing SEO algorithms and best practices. SEO is a dynamic field, and it requires continuous learning to remain effective. Additionally, competition among SEO consultants can be fierce, so you must be prepared to market your services effectively and stand out from the crowd.

35. Enter Affiliate Marketing

Entering affiliate marketing is a known side hustle for engineers because you can target a wide range of potential customers interested in various engineering-related products and services. To get started, it's a way to earn commissions by promoting products or services from other companies through your unique affiliate links. Platforms like Amazon Associate, JVZoo, and ClickBank are great starting points for if you want to start your journey in this side hustle. Additionally, this field is booming, with a study by Rakuten/Forrester Research revealing that a staggering 80% of brands utilize affiliate marketing programs. You can tap into this by promoting products and services relevant to your niche or expertise. Whether it's recommending engineering tools, software, or even online courses, there's a vast market waiting to be explored.

Also, you can expect substantial earnings in this side hustle. According to PayScale, the average income for an affiliate marketer is estimated at around $51,700 per year. However, it's essential to note that your earnings can vary based on your niche, marketing efforts, and audience size. While the field is growing, it's also becoming increasingly competitive. According to Google Trends data, the global interest in "affiliate marketing" has been consistently rising since 2016, with a notable surge from 2020 onwards. This heightened interest means that you will face tougher competition.

36. Create And Sell SpreadSheets

Creating and selling spreadsheets is a lucrative side hustle for engineers because you can cater to a huge number of Excel users. It involves crafting customized Excel spreadsheets or similar tools to address specific financial or data management needs. According to CPA Practice Advisor, between 750 million and a billion people worldwide use Excel or other spreadsheet tools. Additionally, Acuity Training reveals that 83% of individuals rate themselves as either intermediate or advanced Excel users. With such a significant user base and a substantial portion considering themselves skilled users, there's a high demand for you to offer your spreadsheet solutions. You can fill that gap by creating specialized spreadsheets that cater to specific industries or business needs, offering valuable services to clients.

When it comes to how much side income you can make, Sellfy stated that on average, you can make a passive income of $300–$800 a month with just a couple of spreadsheets that you create once. This means that you can generate recurring income by selling their spreadsheet creations online. The more niche-specific and valuable the spreadsheets are, the higher the earning potential becomes. However, one notable challenge is the need for continuous innovation and staying updated with industry trends and client requirements. The spreadsheet market can become saturated, making it crucial for anyone to offer unique and valuable solutions to stand out. Additionally, marketing and promoting your spreadsheet services effectively can be a hurdle, as competition in the online marketplace is fierce.

37. Start Airbnb Arbitrage

Starting Airbnb arbitrage is a rewarding side hustle for engineers because you can cater to travelers and tourists seeking temporary accommodation solutions. Airbnb Arbitrage is the practice of leasing properties on platforms like Airbnb, taking advantage of the short-term rental market without the long-term commitment of property ownership. You can seize the chance to enter the real estate market with relatively low upfront costs. Statista reports that the monthly rent for 2-bedroom apartments averages $1,320, making it an affordable alternative to traditional property ownership. This becomes even more appealing when considering the average home price of $416,000. Moreover, real estate educators like BiggerPockets highlight Airbnb arbitrage as an excellent entry point for budding real estate investors because it offers a hands-on learning experience to understand real estate dynamics without the burdens of property ownership.

With regards to how much money you can make, you can expect to earn a substantial income stream through Airbnb Arbitrage. According to iGMS, you can generate significant revenue by renting out your property, especially during peak periods. For instance, with a monthly rent of $1,500, you could rent your property for $250 per night on weekends, potentially earning $2,000 to $2,500 per month. This income not only covers your rent but also leaves you with extra funds to cover expenses and grow your business. However, legal challenges can arise due to strict Airbnb host restrictions imposed by certain cities. For instance, cities like Berlin and Santa Monica experienced a 49% and 37% decline in listings, respectively, after implementing fines and rental caps. You need to stay informed about local regulations and adapt their business practices accordingly to avoid legal issues that may affect their Airbnb Arbitrage venture.

Why Engineers Start Side Hustle?

Engineers start side hustle because of the changing dynamics of job markets and personal aspirations. The fact that a substantial 75% of individuals with science, technology, engineering, and math (STEM) degrees, as reported by the Washington Post, don't find employment in their respective fields. This stark reality motivates engineers to explore side gigs that provide avenues to apply their skills beyond traditional job roles. Additionally, data from the U.S. Bureau of Labor Statistics' Occupational Outlook Handbook reveals that around 8% of individuals with engineering degrees work part-time. It shows a need for supplemental income or a desire for a more flexible work arrangement. Engineers may involve in side hustles to boost their financial stability, foster professional growth through diverse experiences, or pursue passion projects that align with their expertise. It enables them to navigate the ever-developing job landscape.

What Side Hustles Can Engineers Do?

Engineers have a wide range of side hustle opportunities they can do. Some engineers can offer consulting services in their area of expertise, providing solutions for businesses and individuals. For instance, civil engineers can consult on construction projects, while software engineers can offer coding and programming services. Engineers with design skills can create and sell blueprints, schematics, or digital designs. Additionally, engineers can sell physical products they design, such as gadgets or inventions. Another option for engineering is online tutoring or teaching in subjects related to engineering is another option. They can also write technical articles, blogs, or e-books, monetizing their knowledge. Lastly, taking part in affiliate marketing or investing in engineering-related stocks can generate passive income. These side hustle options leverage their skills, expertise, and knowledge while diversifying their income streams.

Do Engineers Have Time For Side Hustle?

Yes, engineers have time for a side hustle, but it largely depends on their main job's demands and their personal time management skills. The U.S. Bureau of Labor Statistics' Occupational Outlook Handbook reports that about 8% of individuals with an engineering degree were employed part-time. It means that there are 8% who have ample time to do side hustle. Engineers who have regular, predictable work hours have a higher likelihood of successfully managing a side hustle compared to those in highly demanding roles. For example, a software engineer with a standard work schedule might develop a mobile app in their free time. However, it's important for engineers to consider the impact of a side hustle on their primary job and personal life before starting one.

What Platforms Can Engineers Explore For Freelance Opportunities?

Engineers can explore platforms for freelance opportunities like Upwork, Freelancer, and Toptal for freelance opportunities. According to Statista, in 2021, there were approximately 77 million freelancers in the United States, indicating a growing trend in the gig economy. These platforms can connect engineers with clients seeking specialized skills in fields like software development and mechanical engineering. LinkedIn is also a valuable platform for networking and finding freelance projects, with numerous engineering-related groups and job postings. Additionally, industry-specific websites like GitHub and Kaggle offer opportunities for software development and data science projects.

What Set Of Skills Can Engineers Apply In Side Hustle?

Engineers can apply a set of skills in their side hustles such as drawing from their technical expertise and problem-solving abilities. The skills possessed by engineers are well-suited for a variety of side hustles. For instance, mechanical engineers can leverage their knowledge to offer 3D printing services, helping clients turn their design ideas into physical prototypes. Software engineers can develop mobile apps or provide software consulting for businesses looking to streamline their operations. Additionally, civil engineers can provide structural assessments and consulting for homeowners or small businesses planning renovations or construction projects.

Conclusion: Why Local Lead Gen Biz Is The Best Side Hustle For Engineers?

Local lead gen biz is the best side hustle for engineers because it puts you in the driver's seat of your own business. Your clients can't just let you go because they rely on you for a steady stream of leads. What's more, you can earn passive income by ranking your website high on Google. Once that's done, it keeps bringing in leads with little effort—set it up, and let it roll. This passive income keeps flowing month after month with minimal to zero maintenance. Now, let's talk about the competition. It's way less intense. You're not competing globally but locally, with just 10-15 businesses or even fewer. Think about it—the U.S. Bureau of Labor Statistics notes that around 8% of engineers work part-time. That makes local lead generation a perfect fit for engineers juggling part-time gigs.

But what about the money? The profit margins are seriously good. You can pocket $500 to $2,500 per month per website and get this—a whopping 95% profit margin. Take a real-life example—a tree service site I set up has been making me $2,000 every month since 2015. I only spent 15 hours building and ranking it. Fast forward seven years, and it's made me a cool $168,000.

In a nutshell, local lead generation gives you control, steady income, less competition, and a fat profit margin. So, if you’re an engineer looking for a side gig to make more extra cash, look no further, start local lead gen biz.