Careers

Own the Entire Engineering Process from Research to Production

Design, build, test, and manufacture real products for military, government, and commercial customers alongside a team of engineers, scientists, and innovators.

At Mainstream Engineering, Innovation is more than an idea, it is part of the way we work every day. Since 1986, our team has focused on developing advanced technologies and transitioning them into practical, high-quality products. Our work spans thermal control, energy and sustainability, power electronics, mechanics, materials science, manufacturing, and commercial product development.

This is a career environment for people who like to learn, build, test, improve, and contribute. Whether you are an experienced professional or just beginning your career, Mainstream Engineering offers the opportunity to work on cutting-edge technologies, collaborate with exceptional talent, and help shape solutions that make a difference. Explore our current opportunities and discover where your future can take you.

What You’ll Actually Work On

Thermal Energy

single-phase pumped loops, vapor compression, hypersonic vehicles, coldplates for electronics, heat exchangers, thermal energy storage devices

Power Electronics

motor drives, converters, embedded controls, high power semiconductor modules

Materials Science

epitaxial crystal growth, nanomaterials, nanoelectronics, photovoltaics, metallurgy, capacitors, transistors

Energy & Sustainability

thermochemical biofuel production, chemical monitoring, air purification, sensor development, wastewater recycling, clean biomass combustion, and gas-to-liquids conversion

Mechanics

diesel engine component design and electrification, advanced robotics, additive manufacturing, ZnS windows for hypersonic vehicles, laser weapon cooling systems

Why Build Your Career Here?

Work on Challenging Problems

Solve Problems That Matter

Our teams work on advanced technical challenges across multiple disciplines — from thermal management and power electronics to materials science, manufacturing, and applied research.

See Ideas Become Products

From Research to Real-World Impact

Mainstream is both an R&D company and a manufacturer. That means team members can be involved in the full journey — from early concepts and prototypes to testing, production, and customer support.

Keep Learning

Grow Across Disciplines

Mainstreamers often work across different technologies, programs, and product areas. It is a strong fit for people who are curious, adaptable, and excited to keep building new skills.

Work with Purpose

Contribute to U.S.-Made Innovation

Mainstream focuses on transitioning advanced technology into high-quality, cost-effective products manufactured in the United States.

A Team Built Around Curiosity, Collaboration, and Follow-Through

Mainstream’s work requires more than technical knowledge. It takes collaboration, creativity, persistence, and a willingness to explore new ideas.

Our team includes engineers, scientists, technicians, production specialists, business professionals, and support staff working together to move projects forward. Whether you are early in your career or bringing years of experience, you will find opportunities to contribute, learn from others, and take ownership of meaningful work.

What Our Mainstreamers Say

The best way to understand Mainstream is to hear from the people doing the work. Our employees describe a workplace where they can explore new ideas, collaborate across disciplines, and continue growing throughout their careers.

Love the freedom to explore novel ideas to solve challenging problems. The collaborative atmosphere within MEC is excellent. I am fortunate to have the ability to be involved in product development from the early stages to full-rate production and customer support.

Christian Rodriguez Senior AeroSpace | Mechanical Engineer, M.S.

I have worked at MEC for 14 years, and what I like most about Mainstream is that we are family-oriented. MEC cares about their employees’ well-being as well as their families. Education is important, and I have learned a lot and taken courses to help with my position as EPA Test Supervisor.

Lisa Rineholt EPA Testing Supervisor

Do what you love, and you don’t have to work a day in your life. That is what working at Mainstream Engineering is like for me – getting to push the boundaries of science and develop new energy technologies for a better tomorrow.

Dr. Justin Hill Ph.D. Materials Science Technology Leader | Engineering Manager

    Benefits That Support Your Work and Your Life

    Mainstream Engineering offers a benefits package designed to support employees professionally and personally. From health and wellness to retirement planning, time away, education support, and company events, we want our team members to feel supported as they grow.

    Explore Opportunities by Career Area

    Mainstream offers career paths for technical, production, business, and support roles. Explore open opportunities by area, or view all current openings.

    Work on Florida’s Space Coast

    Mainstream Engineering is headquartered in Rockledge, Florida, part of the growing Space Coast region. Our location offers access to a strong engineering and technology community, nearby coastal communities, and a region known for aerospace, innovation, and advanced manufacturing.

    Whether you already call Central Florida home or are considering a move to the area, Rockledge offers a strong base for building a career and enjoying life outside of work, with no state income tax, beaches within minutes, family-friendly communities, and easy access to Orlando International Airport.

    View Local Guide

    Ready to Become a Mainstreamer?

    If you are curious, collaborative, and ready to help turn advanced ideas into real-world products, we invite you to explore current opportunities at Mainstream Engineering.
    View All Open Positions
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    Questions About Careers?

    I'm Neil, Mainstream Engineering's Corporate Recruiter. If you'd like to learn more about opportunities at Mainstream, I'd be happy to connect.