Thermal Engineer Jobs

Work directly with hardware engineering customers to run test cases, interpret results, and help deploy an AI-assisted workflow at a fast-moving AI-for-hardware startup in Palo Alto.

Senior Thermal Engineer needed to drive thermal design, CFD modeling, and validation for high-power semiconductor packages at an early-stage Santa Clara company.

Lead mechanical design and production readiness for next-generation thermal imaging products at Seek Thermal, guiding cross-functional teams from early concept through volume manufacturing.

Propulsion Test Engineer needed to design and execute validation tests for electric motors and inverters at a fast-paced electric aviation company.

Contribute to next-generation RF/mmWave subsystem development as an Electrical Engineer responsible for schematic capture, PCB layout, simulation, fabrication oversight, and testing for mission-critical applications.

Senior Battery Design Engineer needed to drive battery selection, integration, testing, and vendor qualification for Oura’s compact wearable products in a hybrid San Francisco role.

Mechanical systems interns will support design, analysis, prototyping, and testing of structures and thermal solutions for satellite communication hardware at CesiumAstro's Austin facility.

Commonwealth Fusion Systems is hiring a Senior Diagnostics Mechanical Engineer to design and deliver mechanical systems and assemblies for SPARC diagnostic instrumentation, from CAD and analysis through prototyping, assembly, and commissioning.

Astranis, a venture-backed satellite communications company, is hiring Associate Mechanical Engineers in San Francisco to design, build, and test hardware destined for flight.

E-Space is hiring a Staff Battery Electro-Mechanical Engineer to lead design, qualification, and production readiness of satellite battery packs from clean-sheet through flight.

Experienced packaging engineer needed to lead development and qualification of primary, secondary, and tertiary packaging solutions for biologics, parenterals, and combination products at a leading pharmaceutical company.

Fleetzero is hiring an experienced Mechanical Engineering Manager to lead design, prototyping, testing, and production of marine mechanical systems and production automation.

Mainspring Energy is hiring a Senior Mechanical Engineer to lead alignment design, analysis, and validation of critical components for its Linear Generator at the Menlo Park HQ.

Albedo is hiring a Senior Optical Engineer to drive optical design, alignment, and production readiness for high-resolution VLEO telescope systems supporting the Clarity constellation.

Mission Driven

Social Impact Driven

Passion for Exploration

Reward & Recognition

SpaceX Starshield is hiring a Thermal Engineer to perform thermal design, analysis, and test of spacecraft and hardware at the Hawthorne, CA facility.

Antares is hiring a Senior Test Engineer to architect, build, and execute precision test stands and comprehensive test plans for space and terrestrial thermal systems at its Torrance facility.

SEGULA Technologies is hiring a Development & Validation Engineer in Auburn Hills to lead transmission and driveline validation, DFMEA, and failure analysis for production launches.

BETA Technologies is hiring Mechanical Engineers to design, prototype, and support production of EV charging and ground support equipment for electric aircraft.

Alloy Enterprises is hiring a Sr. Solutions Engineer to lead technical customer engagements and design manufacturable thermal solutions that enable breakthrough cooling performance.

Zeeco is seeking an experienced Global Retrofit and Aftermarket Manager to lead application engineers, drive technical proposals and pricing, and grow aftermarket business for Thermal Oxidizers from the Tulsa office.

Northwood is hiring a Senior Mechanical Design Engineer to lead mechanical, thermal, and tooling design for global ground-station antenna hardware from concept to production.

Lawrence Livermore National Laboratory seeks experienced Senior Mechanical Engineers to drive advanced mechanical design, analysis, and prototype development for national security programs.

Redwood Materials seeks a Staff Chemical Engineer to lead applied process R&D and scale-up efforts across hydrometallurgy, pyrometallurgy, electrochemistry and minerals processing for battery recycling.

Senior mechanical engineering role responsible for owning thermal and fluid system architecture, driving design through testing and manufacturing, and mentoring engineering teams at a fast‑growing clean energy company.

Lead reliability testing and failure analysis for next-generation wireless optical communication hardware, driving qualification and design improvements across semiconductor, photonic and system-level components.

Lead the mechanical design and qualification of a next-generation Army smart helmet, focusing on lightweight ballistic protection, materials, FEA, and wearable-system integration at Anduril's Warfighter Systems team.

Relativity Space seeks a hands-on Thermal Engineer I to perform thermal analyses, drive thermal system design, and support testing for the Terran R launch vehicle.

ALSO is hiring a Vehicle Verification and Validation Engineer in Palo Alto to lead vehicle-level durability, environmental, and fleet validation testing for its next-generation small electric vehicles.

Lead mechanical design for Base's high-power residential grid-tied inverter, applying deep thermal and power-electronics packaging expertise to deliver production-ready systems.

Base is hiring a hands-on Hardware Test Engineer to design and automate electromechanical tests and deliver clear, data-driven insights that ensure reliable field performance of distributed battery systems.

Lumafield is hiring a hands-on Senior Mechanical Engineer in San Francisco to lead mechanical design, prototyping, and system integration for next-generation industrial CT scanners.

Lead the end-to-end development of advanced spaceflight mechanical and thermal hardware at IRPI, owning design, prototyping, test, and qualification for life-support and spacecraft subsystems.

Joby Aviation is hiring a Senior Mechanical Engineer, System Electronics to lead design, prototyping, and certification of electromechanical assemblies for its eVTOL aircraft.

Fourth Power is hiring an early-career Instrumentation Engineer to design and implement sensors, control hardware, and test stands for their high-temperature thermal battery technology.

Senior Flexonics Pathway is hiring a Project Engineer - Proposal to lead RFQ review, cost estimation and technical proposal development for industrial customers.

Mission Driven

Social Impact Driven

Passion for Exploration

Reward & Recognition

SpaceX is hiring a Mechanical Engineer to design and validate rugged sensor packages for Starship avionics, driving mechanical design, FEA, and testing from concept through production.

Mission Driven

Social Impact Driven

Passion for Exploration

Reward & Recognition

Lead mechanical design and packaging of flight‑critical avionics and sensor systems at SpaceX, owning hardware performance from concept through launch and beyond.

Senior Hyperscale Solutions Engineer needed to lead technical solutioning and design for large-scale hyperscale data center projects at NTT Global Data Centers.

Observable Space is hiring an experienced Spacecraft Mechanical Engineer to lead structural design, FEA validation, and qualification testing for flight hardware that must endure launch and space environments.

Senior Electrical Engineer needed to own electrical architecture and integration for Lumafield’s industrial CT scanners at our Cambridge HQ.

Lead Dewberry’s Thermal Infrastructure discipline in Raleigh, providing technical direction, resource management, and quality oversight for complex thermal distribution and central plant projects.

Lead Dewberry’s Thermal Infrastructure practice in Raleigh as a Principal Mechanical Engineer, driving technical design of central plant and distribution systems while mentoring staff and ensuring quality across projects.

Senior Thermal Engineer I sought to design and validate thermal control systems for next‑generation satellite and airborne hardware at a fast‑paced aerospace startup.

Anduril seeks a Mechanical Engineer in Reston to design and drive mechanical systems from concept through production for Intelligence Community hardware programs.

Experienced mechanical engineer with strong thermal infrastructure and central plant design expertise needed to lead projects and provide technical leadership at Dewberry’s Raleigh office.

Exowatt seeks a Lead Systems Engineer in Miami to drive systems architecture, validation, and long-term reliability for its modular P3 thermal energy storage platform as it moves to commercial deployment.

AST SpaceMobile seeks an Environmental Test Engineer to lead TVAC, vibration, and shock testing of space hardware and drive test campaigns from planning through anomaly resolution.

Mission Driven

Social Impact Driven

Passion for Exploration

Reward & Recognition

Lead a cross-functional development test team at SpaceX's Starshield program to design, build, and run test stands and instrumentation that validate spacecraft hardware and subsystems.

Experienced mechanical engineer needed to lead design and production of data-center and telecom mechanical systems, emphasizing sheet-metal design and thermal management for high-volume manufacturing.