Mechanical Engineer Intern

Position Summary

We are currently sourcing for Mechanical Engineering Interns for the summer of 2026. Successful candidates will work alongside of experienced R&D engineers on projects within the realm of thermal controls and energy conversion. Our R&D work is varied and projects are completed for DOD, DOE, DOT and a host of other governmental agencies as well as private interest. These positions will give candidates hands on, real world exposure to the field of R&D engineering. Successful candidates will gain experience in research, design, building, testing and proposal work in a project deadline oriented environment.

Position Requirements

• Currently enrolled in an ABET accredited Mechanical Engineering program with a GPA not less than 3.3 in all degrees of study. Graduate level candidates will be given preference.
• Experience with AutoCAD, PRO-E or other 3D drafting/design software
• Candidates with previous R&D internship experience will be given preference
• Mechanical inclination, ability to use hand tools, construct testing fixtures
• Desire to work in an R&D setting

Mainstream Engineering Corporation is an equal opportunity employer. Qualified candidates will be considered without regard to legally protected characteristics.

Mainstream Engineering Corporation is a defense & space company offering thermal controls.