What a mechanical internship actually involves
A mechanical internship is a temporary work position — usually three to six months — where you work alongside mechanical engineers or technicians on real projects. You are not shadowing; you are doing hands-on work: building prototypes, running tests, troubleshooting equipment, reading blueprints, using CAD software, or assisting with manufacturing processes. The work varies sharply depending on whether you intern at a manufacturing plant, an automotive company, a consulting firm, or a smaller machine shop.
Most mechanical internships are unpaid or paid at $15 to $20 per hour, though some larger companies pay more. The position typically requires you to be enrolled in or recently graduated from a mechanical engineering or related program. You will report to an engineer or supervisor, work standard business hours (sometimes with overtime during crunch periods), and produce measurable output — a completed design, a test report, a repaired system — rather than just learning.
The real value is not the paycheck. It is the portfolio piece, the reference from someone who watched you work, and the clarity about whether you actually want to do this job for forty years. Many students discover they prefer design over manufacturing, or vice versa, during an internship. That discovery is worth more than the hourly rate.
Key Takeaways
- Mechanical internships are hands-on positions where you contribute to real projects, not observation-only roles, and they typically last three to six months.
- You can find openings through your school's career office, LinkedIn, Indeed, company websites, and professional organizations like ASME (American Society of Mechanical Engineers).
- Your resume should highlight relevant coursework, CAD experience, any lab work, and specific tools or software you have used, not just your GPA.
- During the internship, document what you built or fixed with photos and notes — this becomes your portfolio and proof of what you can do.
- Use the internship to build one strong reference and to test whether the type of work matches what you want to do after graduation.
Where to find mechanical internship openings
Start with your school's career office or engineering department. Most universities have a job board, host recruiting events, and maintain relationships with companies that hire their students regularly. A staff member there can often tell you which companies are actively hiring interns that semester and may even introduce you to a recruiter.
If your school does not have a strong pipeline, search LinkedIn, Indeed, and Glassdoor using the terms "mechanical internship" and your location or the city where you want to work. Filter by company size — large manufacturers and automotive suppliers post constantly; smaller shops post less often but may be more flexible about start dates and hours. Check company websites directly under "Careers" — many post internships there first, before they appear on job boards.
Join ASME (American Society of Mechanical Engineers) or your local engineering society. These organizations host job fairs, send internship listings to members, and sometimes connect students directly with hiring managers. Attending one event often leads to multiple conversations and referrals. Reach out to professors who work in industry or have industry connections — they can recommend you directly to companies they know.
What to put on your resume for a mechanical internship
Employers screening internship resumes look for three things: relevant coursework, hands-on experience with tools or software, and evidence that you have actually built or tested something. Your GPA matters less than what you can do.
List courses that are directly relevant: Thermodynamics, Fluid Mechanics, Machine Design, Materials Science, CAD, or any lab course where you designed or built something. Name the specific software you have used — AutoCAD, SolidWorks, MATLAB, Fusion 360 — and how long you have used it. If you have built anything outside of class — a robot for a competition, a project car, a 3D printer, a water filtration system — describe it with specifics: what problem it solved, what materials you used, what role you played.
Include any previous internships, co-op positions, or relevant part-time work, even if it was not in engineering. Machine shop experience, automotive repair, manufacturing, or equipment maintenance all signal that you can work with your hands and follow procedures. If you have none, include a strong project from a class — "Designed and built a cantilever beam test apparatus to measure deflection under load; tested five material samples and documented results in a formal report."
Keep your resume to one page. Use a clear format with section headings. Proofread it three times — typos on an engineering resume are disqualifying.
how the process works and what to expect in interviews
explore directly through the company website or job board, not through a recruiter unless the posting specifically lists one. Write a cover letter that is one paragraph — three to four sentences — explaining why you want this specific internship at this specific company, not a generic letter about your passion for engineering. Mention something about the company's work that interests you: "I am interested in your suspension design work because I focused on dynamics in my coursework" or "Your manufacturing process for composite materials aligns with my senior design project."
Interviews for mechanical internships are usually one or two rounds. The first is often a phone or video screening with HR or a recruiter, where they confirm you are available, ask about your schedule, and check that your resume is honest. The second is usually with the engineer or team lead who will supervise you. They will ask you to walk through a project you have done — explain your design choices, what went wrong, what you would do differently. They may ask you to solve a straightforward problem on the spot or explain how a piece of equipment works. They are not testing whether you know everything; they are testing whether you think clearly and ask good questions when you do not know something.
Bring a notebook and pen. Ask questions about the actual work you will do, the tools you will use, and what success looks like in the role. Do not ask about pay or time off in the first interview.
What to do during your first week on the job
Your first week will include safety training, a tour of the facility, introductions to your team, and access to software or equipment. Take notes on everything: where things are, who does what, what the safety rules are, what the current projects are. Ask your supervisor for a written list of your main responsibilities and the projects you will work on. This prevents confusion later about what you were supposed to be doing.
Observe before you act. Watch how experienced people use the equipment, read the blueprints, or run the tests. Ask why they do things a certain way. Most mistakes happen because an intern skipped this step and jumped straight to doing the work. You will move faster if you spend two days watching and asking questions than if you spend two weeks undoing mistakes.
Find one person on the team — usually not your direct supervisor — who is willing to answer your questions without making you feel stupid. This person becomes invaluable. Treat them to coffee or lunch once during the internship.
Building a portfolio and getting a strong reference
From day one, document your work. Take photos of anything you build, test, or repair. Save copies of reports you write, designs you create, or data you collect. Write down what the project was, what problem it solved, what your role was, and what the outcome was. Do this weekly, not at the end of the internship when you will forget the details.
At the end of the internship, compile this into a portfolio — a PDF or a straightforward website showing three to five of your strongest projects with photos, descriptions, and your role. This becomes proof of what you can do when you explore for jobs or graduate school. Many students skip this step and regret it six months later when they cannot remember what they did or do not have photos.
Before your last day, ask your supervisor if they will write you a reference letter or agree to be a reference on your resume. Make it straightforward for them: remind them of your main projects, ask them to mention specific skills you developed, and tell them where you are explore next. A reference from someone who watched you work is worth far more than a generic letter from a professor who taught you in a lecture hall.
Common mistakes to avoid during a mechanical internship
Do not treat the internship as a trial period where you are figuring out if you like engineering. You are there to contribute and to prove you can do the work. Show up on time, meet important date, and ask for more work if you finish early. Supervisors notice and remember this.
Do not skip the safety training or take shortcuts with safety procedures. Manufacturing environments have real hazards. Follow the rules even if experienced people bend them. An injury ends your internship and your summer.
Do not disappear when something goes wrong. If a test fails, a design does not work, or you make a mistake, tell your supervisor when ready. Engineers respect people who own their mistakes and help fix them. They do not respect people who hide problems or blame others.
Do not spend the internship only on busywork. If you are filing, organizing, or doing data entry for weeks on end, ask your supervisor what the next step is. You should be learning something and contributing to a real project. If that is not happening after two weeks, it is fair to ask for different work.
Frequently Asked Questions
Do I need to be a mechanical engineering major to get a mechanical internship?
No, but it helps. Mechanical engineering technology, civil engineering, aerospace engineering, and physics students also land these positions. What matters is that you have taken relevant coursework and can demonstrate hands-on skills. If you are in a different major, highlight any projects where you designed or built something mechanical.
What if I have no experience with CAD or any mechanical tools?
Learn CAD before you explore. Free or low-cost options include Fusion 360 (free for students), Tinkercad, and OpenSCAD. Spend four to six weeks doing online tutorials and building straightforward models. List it on your resume once you have completed a tutorial and built something. Many companies will teach you their specific software if you know the basics.
Can I do a mechanical internship remotely?
Rarely. Most mechanical internships require you to be on-site to use equipment, attend meetings, and work with physical prototypes. Some companies offer hybrid arrangements where you are in the office three days a week. Remote mechanical internships usually involve CAD work, simulation, or documentation — less common and often less valuable for learning. Ask during the interview if remote work is possible, but expect to be on-site most of the time.
How do I know if a mechanical internship is worth my time if it is unpaid?
An unpaid internship is worth your time if you will work on real projects, build something for your portfolio, and get a strong reference. It is not worth your time if you will spend eight weeks filing, making copies, or doing data entry with no learning. Ask the company during the interview what you will actually do and what you will have to show for it at the end. If they cannot answer specifically, keep looking.
What should I do if I want to work at a specific company but they are not hiring interns right now?
Contact the engineering department directly — not HR. Find the name of an engineer or manager whose work interests you on LinkedIn, send them a short email saying you are interested in interning there and asking if they know of any openings or upcoming opportunities. Many internships are filled through direct contact before they are posted publicly. Persistence and a specific ask often work better than waiting for a job posting.