Thermodynamics

Invenergy

Full-time · Chicago, IL · $85,000 – $108,000

This role supports the development and engineering of geothermal and thermal power generation projects from conception through operation, requiring hands-on technical leadership across design, permitting, and construction phases. It suits experienced engineers with a background in thermal systems who want to drive large-scale energy infrastructure projects across North America.

Listed on Invenergy’s careers site · Apply there ↗

Relativity Space

Full-time · Long Beach, CA · $160,000 – $240,000

Lead the design and operation of complex fluid systems for a commercial rocket vehicle, managing a technical team through full system lifecycle from architecture through flight qualification. This role suits experienced aerospace engineers with deep fluids expertise who want hands-on ownership of critical hardware in a fast-moving development environment.

Listed on Relativity Space’s careers site · Apply there ↗

Boeing

Full-time · North Charleston, SC · $126,650 – $171,350

Boeing is hiring a Mechanical Systems Design and Analysis Engineer to develop environmental control systems for the 787 aircraft, working on component management, system modeling, and supplier coordination. This role suits engineers with aerospace or mechanical systems backgrounds who want to contribute to commercial aviation design and certification.

Listed on Boeing’s careers site · Apply there ↗

Axiom Space

Houston, TX

Axiom Space is hiring a senior engineer to lead the design and delivery of propellant feed and pressure control systems for their commercial space station, from initial requirements through flight qualification. This role suits experienced propulsion engineers who want hands-on technical ownership of complex spacecraft hardware while leading cross-functional teams in a fast-paced commercial space environment.

Listed on Axiom Space’s careers site · Apply there ↗

Arianespace / ArianeGroup

Full-time · Vernon

A technical business role managing fluid systems for rocket launcher testing facilities and new hydrogen-related activities at ArianeGroup's Vernon site. Suited to engineers with fluid systems experience who want to move from design into project coordination and supplier management.

Listed on Arianespace / ArianeGroup’s careers site · Apply there ↗

Stanley Consultants

Full-time · Denver, CO · $139,500 – $185,550

Senior-level mechanical engineer to lead design and retrofit projects for power generation facilities, central plants, and industrial infrastructure. Suited for experienced engineers with deep expertise in thermodynamic systems, process design, and the ability to mentor junior staff while managing complex technical deliverables.

Listed on Stanley Consultants’s careers site · Apply there ↗

Stoke Space

Full-time · Moses Lake, WA · $109,725 – $252,105

Lead the complete test program for Stoke's Andromeda reusable rocket engine, from component validation through flight qualification. This role suits engineers with hands-on propulsion systems experience who want extreme ownership over a critical development program at a spaceflight company.

Listed on Stoke Space’s careers site · Apply there ↗

Relativity Space

Long Beach, CA · $104,000 – $156,000

This role involves designing and managing fluid systems for the Terran R rocket, including propellant, pressurant, and pneumatics architecture from concept through flight. You'll own system designs, conduct thermal and fluid analyses, lead reviews, and validate performance through testing—ideal for someone with hands-on experience in spacecraft or launch vehicle fluid systems who wants to see their work directly shape a functioning rocket.

Listed on Relativity Space’s careers site · Apply there ↗

Invenergy

Full-time · Chicago, IL · $100,000 – $120,000

Invenergy seeks a thermal project engineer to support the development, permitting, and commissioning of geothermal and thermal power generation projects across North America, working through the full project lifecycle from siting to commercial operation. This role is suited for engineers with 2+ years in large-scale power projects who can coordinate vendor relationships, review technical designs, and manage engineering oversight during construction.

Listed on Invenergy’s careers site · Apply there ↗

Axiom Space

Full-time · Houston, TX

This role develops and delivers thermal control systems for commercial space stations, managing the complete lifecycle from design through on-orbit operation. It suits experienced thermal engineers with deep knowledge of heat transfer, fluid mechanics, and spacecraft environments who want to own critical hardware for a crewed orbital facility.

Listed on Axiom Space’s careers site · Apply there ↗