Mechanical engineers design, build, and improve machines and mechanical systems that move, heat, cool, or control things

A mechanical engineer works on anything with moving parts or systems that transfer energy — from car engines and HVAC systems to manufacturing equipment, robots, and medical devices. The job involves using physics, materials science, and design software to solve real problems: making a pump more efficient, designing a safer aircraft component, or figuring out how to manufacture something faster without breaking it.

The work splits between design (creating plans on computer), testing (building prototypes and running experiments), and troubleshooting (figuring out why something failed and how to fix it). Most mechanical engineers work in offices using computer-aided design (CAD) software, but they also spend time in labs, factories, or on job sites watching their designs in action. The field exists in nearly every industry — automotive, aerospace, energy, medical devices, consumer products, manufacturing — so the specific day-to-day work varies widely depending on where you work.

Key Takeaways

  • Mechanical engineering requires a four-year bachelor's degree in mechanical engineering or a closely related field, plus passing the Fundamentals of Engineering (FE) exam to move toward professional licensure.
  • Entry-level positions typically start at companies in manufacturing, automotive, aerospace, or energy sectors, and often involve supporting senior engineers on design or testing projects.
  • A Professional Engineer (PE) license is not required for most jobs but becomes valuable if you want to offer engineering services directly to the public or lead major projects.
  • The field pays well — median salaries are significantly above the national average — and job growth is steady across most industries that rely on mechanical systems.
  • Internships during college are nearly essential for landing a good first job, so starting to look for them in your sophomore or junior year matters more than waiting until graduation.

The education path: bachelor's degree and the FE exam

You need a four-year bachelor's degree in mechanical engineering from an ABET-accredited program. ABET (Accreditation Board for Engineering and Technology) is the organization that sets standards for engineering programs in the United States, so employers and licensing boards recognize ABET-accredited degrees. The degree covers thermodynamics, fluid mechanics, materials science, dynamics, machine design, and manufacturing processes — the core knowledge you use on the job.

During your final year or shortly after graduation, you take the Fundamentals of Engineering (FE) exam, a standardized test administered by the National Council of Examiners for Engineering and Surveying (NCEES). Passing the FE is the first step toward becoming a Professional Engineer (PE). You do not need a PE license to work as a mechanical engineer in most jobs, but it opens doors if you want to consult independently, sign off on designs that affect public safety, or move into management roles at larger firms.

After passing the FE, you typically work for four years under a licensed engineer, then take the Professional Engineer (PE) exam. This timeline is not rigid — many engineers work their entire careers without pursuing the PE — but it is the formal path if licensure matters to your goals.

What employers look for in entry-level candidates

Your first job usually comes down to three things: your degree, your internship experience, and your ability to use CAD software. Companies hire entry-level mechanical engineers to support senior engineers on design projects, run tests, analyze data, and learn how the company actually builds things. You are not expected to design a product from scratch on day one.

Internships during college are the single biggest factor in landing a good first position. Most students who graduate without internship experience struggle to find mechanical engineering roles and may end up in adjacent fields like manufacturing or quality assurance instead. Start looking for internships in your sophomore or junior year — many companies recruit on campus or through engineering job boards like Indeed, LinkedIn, or the American Society of Mechanical Engineers (ASME) career center.

Familiarity with CAD software — SOLIDWORKS, AutoCAD, or Fusion 360 are common — matters because you will use it when ready. Many colleges include CAD training in the curriculum, but if yours does not, learning it on your own before graduation gives you an edge. You should also be comfortable with basic spreadsheet work, data analysis, and technical writing, since you will document your work and present findings to teams.

Industries and roles where mechanical engineers work

Mechanical engineers are spread across many sectors. In automotive, they design engines, transmissions, suspension systems, and safety features. In aerospace, they work on aircraft structures, propulsion systems, and landing gear. Energy companies hire mechanical engineers to design power plants, turbines, and renewable energy systems. Medical device companies need them to design surgical instruments, pumps, and diagnostic equipment. Manufacturing facilities employ mechanical engineers to design production equipment and improve efficiency.

Within each industry, roles vary. A design engineer focuses on creating new products or components using CAD and physics calculations. A manufacturing engineer figures out how to build something efficiently and cost-effectively. A test engineer runs experiments to verify that designs work as intended. A field engineer travels to customer sites to install, troubleshoot, or maintain equipment. A quality engineer checks that products meet standards and investigates failures. Most engineers move between these roles as their careers progress.

Salary, job growth, and long-term prospects

Mechanical engineering is one of the better-paying engineering fields. Entry-level salaries vary by location, company size, and industry, but are generally well above the median for all occupations. Experienced mechanical engineers with a PE license or specialized informed earn substantially more, especially if they move into management or consulting.

Job growth depends on the industry. Manufacturing and automotive have faced ups and downs with automation and global competition, but aerospace, renewable energy, and medical devices are growing. The U.S. Bureau of Labor Statistics tracks mechanical engineering employment, and the outlook has been stable to modest growth over the past decade. What matters more than overall growth is that mechanical skills are always in demand — companies will always need people who understand how to design and build things.

Career progression typically moves from entry-level engineer to senior engineer, then into project management, consulting, or leadership roles. Some engineers stay hands-on with design and testing their entire careers; others move into business or management. The field offers flexibility because the skills transfer across industries.

How to prepare while still in high school or early college

If you are considering mechanical engineering, start building relevant skills now. Take physics and advanced math courses — calculus and differential equations appear in every mechanical engineering program. If your school offers engineering or CAD classes, take them. Join robotics clubs, science olympiad teams, or maker spaces where you build and test things with your hands.

Look for summer programs or camps focused on engineering, especially ones that let you design and build something. Many universities and companies offer week-long or month-long programs for high school students. These programs are not required, but they show you whether you actually enjoy the work before you commit to a four-year degree.

Start following mechanical engineering on social media or YouTube — channels that show real engineering work, failures, and problem-solving give you a sense of what the job actually involves. Read about engineering failures and how they were solved. This background makes your college applications stronger and helps you decide if the field is right for you.

Frequently Asked Questions

Do I need a master's degree to become a mechanical engineer?

No. A bachelor's degree is sufficient for most mechanical engineering jobs. A master's degree can help you specialize in an area like robotics or thermal systems, or move into research or teaching, but it is not required to work as a mechanical engineer or to earn a good salary.

What is the difference between mechanical engineering and mechanical technology?

Mechanical engineering is a four-year degree focused on design, analysis, and problem-solving using advanced math and physics. Mechanical technology is typically a two-year program that trains you to build, install, and maintain mechanical systems. Both are valuable, but they lead to different roles and salary levels.

Can I work as a mechanical engineer without a PE license?

Yes. Most mechanical engineers work their entire careers without a PE license. The license becomes important if you want to offer engineering services directly to clients, sign designs that affect public safety, or lead certain types of projects. For jobs at companies, it is optional.

How competitive is it to get a mechanical engineering internship?

Competitive, but not impossible if you start early and explore broadly. Companies receive many applications, so having good grades, relevant coursework, and a clear reason for wanting the internship helps. explore to companies of all sizes — large corporations, mid-size manufacturers, and smaller specialized firms all hire interns.

What happens if I graduate with a mechanical engineering degree but decide the field is not for me?

Your degree opens doors beyond mechanical engineering. Companies hire mechanical engineers for project management, quality assurance, sales engineering, and manufacturing roles. The problem-solving and technical skills transfer to many fields, so you are not locked into one path.