Mainstream Engineering

Senior Thermal Engineer

10+ years experience; PhD preferred (ME) or MSME; US citizenship for ITAR; GPA 3.3+; heat transfer, thermodynamics, fluid dynamics; LabVIEW experience; CFD/FEA a plus

Rotomold Technician I

Rotomold Technician

High school diploma, US citizenship, mechanical aptitude, rotomold/molding experience preferred, ability to lift 50 lbs, forklift certification preferred.

Mechanical Design Engineer

BS in engineering; 2+ years in mechanical design; US citizenship; CAD proficiency; GD&T; Autodesk Inventor/Vault experience; knowledge of heat transfer.

Chemical Engineering

Chemical Research & Development Engineer

B.S., M.S., or Ph.D. in Chemical Engineering; 0-2+ years experience; US citizenship or permanent residency; GPA >3.3; hands-on lab experience; mechanical aptitude.

Engineering

Quality Engineer

BS or AS in engineering or QA; 5+ years quality leadership; 10+ years total quality; aerospace/defense experience; QT9 experience preferred; US citizenship.

Electrical Research & Development Engineer

BS in electrical engineering; minimum GPA 3.3; internship required for entry level; US citizenship due to ITAR; experience with microcontrollers and PCB design preferred.

Mechanical Engineering

Mechanical Engineer - Thermal R&D

Mechanical Engineer

BSME/MSME; US Citizenship; GPA >=3.3; heat transfer, thermodynamics, fluid dynamics; LabVIEW; CFD/FEA; ITAR compliance

Mechanical Engineer - Mechanics R&D

Mechanical Engineer - R&D

BSME/MSME/PhD; GPA ≥3.3; US citizenship; hands-on mechanical engineering; experience with design, test, and/or analysis; ANSYS/CFD/FEA a plus.

Senior Manufacturing Engineer

Manufacturing Engineer

BS in Manufacturing or Industrial Engineering; GPA >=3.3; minimum 5 years experience; US Citizenship due to ITAR.

Electrical Engineering

Electrical Engineer - Power Electronics

Electrical Engineer

BS in electrical engineering; GPA 3.3; MS/PhD candidates preferred; experience with wide-bandgap; programming microcontrollers/DSPs; US Citizenship required for ITAR.

Shipping Lead

2+ years shipping experience; HS diploma;UPS/FedEx software; LTL shipments; Dangerous Goods cert preferred; Excel/Word proficient; lift up to 60 lbs; onsite in Rockledge, FL.

Mechanical Engineer - Product Development

BS in Mechanical Engineering, 3.3 GPA, 5 years experience preferred; US Citizenship required for ITAR; onsite in Rockledge, FL; full-time employment.

Entry-level manufacturing engineer with BS in Manufacturing/Industrial/Mechanical Engineering; GPA 3.3+; internship or project experience preferred; US citizenship due to ITAR; strong problem-solving and communication skills.

Electrical Test Systems Engineer

BS in Electrical Engineering with GPA 3.3 or AAS in Electrical Engineering Technology with industry experience; internship for entry level; hands-on test equipment; fast-paced environment; IPC/UL knowledge; US citizenship for ITAR.

Title	Location	Date
Senior Thermal Engineer Full Time · 10+ YOE Rockledge, Florida, United States · Onsite	Rockledge, Florida, United States Onsite	May 1, 2026
Rotomold Technician I Full Time · $44K-$46K/yr Rockledge, Florida, United States · Onsite	Rockledge, Florida, United States Onsite	Apr 30, 2026
Mechanical Design Engineer Full Time · 2+ YOE Rockledge, Florida, United States · Onsite	Rockledge, Florida, United States Onsite	Apr 28, 2026
Chemical Research & Development Engineer Full Time · 0+ YOE Rockledge, Florida, United States · Onsite	Rockledge, Florida, United States Onsite	Apr 20, 2026
Quality Engineer Full Time · 5+ YOE Rockledge, Florida, United States · Onsite	Rockledge, Florida, United States Onsite	Apr 20, 2026
Electrical Research & Development Engineer Full Time Rockledge, Florida, United States · Onsite	Rockledge, Florida, United States Onsite	Apr 20, 2026
Mechanical Engineer - Thermal R&D Full Time Rockledge, Florida, United States · Onsite	Rockledge, Florida, United States Onsite	Apr 20, 2026
Mechanical Engineer - Mechanics R&D Full Time · 3+ YOE Rockledge, Florida, United States · Onsite	Rockledge, Florida, United States Onsite	Apr 20, 2026
Senior Manufacturing Engineer Full Time · 5+ YOE Rockledge, Florida, United States · Onsite	Rockledge, Florida, United States Onsite	Apr 20, 2026
Electrical Engineer - Power Electronics Full Time Rockledge, Florida, United States · Onsite	Rockledge, Florida, United States Onsite	Apr 20, 2026
Shipping Lead Full Time · $42K-$52K/yr · 2+ YOE Rockledge, Florida, United States · Onsite	Rockledge, Florida, United States Onsite	Apr 16, 2026
Mechanical Engineer - Product Development Full Time · 5+ YOE Rockledge, Florida, United States · Onsite	Rockledge, Florida, United States Onsite	Apr 16, 2026
Manufacturing Engineer Full Time Rockledge, Florida, United States · Onsite	Rockledge, Florida, United States Onsite	Apr 13, 2026
Electrical Test Systems Engineer Full Time Rockledge, Florida, United States · Onsite	Rockledge, Florida, United States Onsite	Apr 9, 2026

Activities	Thermal management systemsEnergy conversion technologyResearch and developmentElectronics manufacturingMechanical engineering
Headquarters	US
Industries	Defense and Space ManufacturingMechanical Engineering
Name	Mainstream Engineering
Employees	150
Type	Private
Subsidiaries	QwikProductsEPATestMainstream MarineSafe Boating CardStovelabsFix My ACAgreFine
Tagline	Develops and manufactures thermal control and energy conversion systems.
Founded	1,986
Website	mainstream-engr.com
Latest Funding Round	Grant
Latest Funding Year	2,025
Latest Funding Amount	1,899,532
Latest Investors	Department of Defense

Mainstream Engineering

About Mainstream Engineering