JobsMechanical EngineerUnited StatesMechanical Engineer - Thermal R&D

Mainstream Engineering

Posted 11 days ago

Mechanical Engineer - Thermal R&D

Mainstream Engineering · Rockledge, Florida, United States

Full-timeOn site2-5 yrsListed as no visa sponsorshipDefense and Space Manufacturing
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In short

Lead thermal engineering projects from concept through production, including ideation, research, prototype builds, experimental testing, and design for manufacture. Develop and evaluate thermal technologies using analytical calculations, CFD and FEA simulations, laboratory testing, proposal writing, and direct customer engagement.

What they're looking for

MUST-HAVE SKILLS

BSME or MSMEHeat transfer, thermodynamics, and fluid dynamicsHands-on laboratory test experienceData acquisition systemsUS citizenship (ITAR)GPA of 3.3 or higher

ALSO MENTIONED

LabVIEWCFD/FEA modeling

Requires a BSME or MSME, a GPA of at least 3.3 for all degrees, U.S. citizenship, hands-on laboratory testing experience, and a solid foundation in heat transfer, thermodynamics, and fluid dynamics. Experience with data acquisition systems and sensors is required; LabVIEW is preferred, while ANSYS/FLUENT CFD or FEA experience is a plus.

About the employer

Mainstream Engineering Corporation

Solutions Through Advanced Technology

Mainstream Engineering Corporation is a solutions-oriented research, development and manufacturing small business founded in 1986. Our Engineering Mission is to research and develop emerging technologies and to engineer these technologies into superior-quality, military- and private-sector products that provide a technological advantage.

Read more

Areas of expertise include thermal control, energy conversion, turbo-machinery, chemical-based technologies and materials science. Mainstream began as a thermal-science R&D company solving NASA and DOD problems related to thermal control, replacement working fluids and advanced heat pump development. Today, while continuing to perform these R&D projects for NASA, DOD, DOE, USDA, DOT and DOC (NIST) applications, we have found a tremendous need for rapid, cost-effective engineering solutions in the commercial world. Mainstream has in-house facilities to transition an innovation from its initial laboratory proof-of-concept demonstration to production.

INDUSTRY
Defense and Space Manufacturing
COMPANY
Privately Held
FOUNDED
1986
HEADQUARTERS
Rockledge, Fl
SIZE
51-200on LinkedIn
OFFICES
1 on LinkedIn

KNOWN FOR

Consumer Goods ManufacturingEnergy ConversionThermal ControlsMechanicalElectricalChemical and Material Engineering

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Questions about this role

Is this Mainstream Engineering role remote?
Tagged on site.
Does it sponsor visas?
Listed as no visa sponsorship.
What experience does it ask for?
Listed as 2-5 years.

The posting, in full

We are looking for motivated thermal engineers to develop cutting-edge products for our military, governmental, and commercial customers. Systems we design are specifically tuned for the customers' needs and ranges from single-phase pumped loops, vapor compression and other lifting cycles, and radiation thermal management. Our current designs extend the range of hypersonic vehicles, enable power dense laser weapons on small platforms, and lower size, weight, and power for aerospace systems. Components we routinely develop include coldplates for electronics, heat exchangers, thermal energy storage devices, and mechanical components for thermal systems. Our group of thermal engineers drive products from conception to production including product ideation, research, laboratory/prototype builds, experimental testing, and design for manufacture. Individual engineers lead their own projects and research. Your creativity and interest determine the next technology you investigate. We currently use advanced techniques like microchannel cooling, three-dimensional cooling passages through additive manufacturing, membrane enhanced cooling, oscillating heat pipes. This position includes proposal writing for your next idea, analytical calculations, computational simulations (CFD and FEA), laboratory build and testing, and direct customer interfacing.

▶ READ THE FULL POSTING

Position Summary

We are looking for motivated thermal engineers to develop cutting-edge products for our military, governmental, and commercial customers. Systems we design are specifically tuned for the customers' needs and ranges from single-phase pumped loops, vapor compression and other lifting cycles, and radiation thermal management. Our current designs extend the range of hypersonic vehicles, enable power dense laser weapons on small platforms, and lower size, weight, and power for aerospace systems. Components we routinely develop include coldplates for electronics, heat exchangers, thermal energy storage devices, and mechanical components for thermal systems. Our group of thermal engineers drive products from conception to production including product ideation, research, laboratory/prototype builds, experimental testing, and design for manufacture. Individual engineers lead their own projects and research. Your creativity and interest determine the next technology you investigate. We currently use advanced techniques like microchannel cooling, three-dimensional cooling passages through additive manufacturing, membrane enhanced cooling, oscillating heat pipes. This position includes proposal writing for your next idea, analytical calculations, computational simulations (CFD and FEA), laboratory build and testing, and direct customer interfacing.

Position Requirements

  • We are looking for people that fit our values
  • problem solvers; people that can innovate solutions to real-world problems
  • relentless intellectual curiosity
  • service-minded individuals
  • Internally motivated
  • Hands-on laboratory test experience
  • BSME or MSME
  • US Citizenship required due to strict ITAR regulations
  • GPA not less than 3.3 for all degrees
  • Solid understanding of heat transfer, thermodynamics, and fluid dynamics
  • Experience with data acquisition systems (LabVIEW preferred) including temperature, pressure, flow, and other sensors
  • CFD/FEA modeling (ANSYS/FLUENT) experience is a plus

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

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This listing comes from Mainstream Engineering's own careers site. Apply links go to the employer. Company facts are from Mainstream Engineering Corporation's public profile. Last checked 9 Nov 2026.