Computational Fluid Dynamics (CFD)

CesiumAstro

Full-time · Westminster, CO · $184,000 – $246,000

CesiumAstro seeks a Senior Staff Thermal Engineer to design and validate thermal control systems for satellites and aerospace platforms, spanning from concept through qualification testing. The role suits experienced thermal engineers who want to work on next-generation space hardware in a collaborative startup environment.

Listed on CesiumAstro’s careers site · Apply there ↗

Voyager

Full-time · Reno, NV · $149,815 – $207,385

This role requires a highly experienced mechanical engineer to lead complex test programs for advanced propulsion and aerospace systems, with deep expertise in test design, data analysis, and rocket motor technology. The position suits someone with 10-15 years of experience who thrives in mission-critical defense and space projects and can obtain a security clearance.

Listed on Voyager’s careers site · Apply there ↗

Relativity Space

Long Beach, CA · $184,000 – $276,000

This role leads a team of fluids analysts at a rocket company, guiding the design and operation of propellant and thermal systems across the vehicle. You'll apply expertise in CFD, flow analysis, and thermal dynamics while mentoring engineers and directly shaping critical hardware decisions for an early-stage launch vehicle program.

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

Crusoe

Denver, CO · $190,000 – $215,000

Crusoe is seeking a Senior Staff Mechanical Systems Engineer to design and own the liquid cooling and thermal architecture of modular AI data centers, translating GPU compute requirements into production-ready hardware systems. This role bridges mechanical engineering, thermal physics, and manufacturing, requiring deep expertise in complex cooling loops and hands-on collaboration with design partners to scale high-density compute infrastructure.

Listed on Crusoe’s careers site · Apply there ↗

Lynk Global

Chantilly, VA

This role develops Hall Effect Thrusters and other propulsion components for satellites, requiring deep expertise in electric propulsion systems and the ability to optimize designs through simulation and analysis. It suits engineers with years of hands-on propulsion experience who are comfortable with magnetic, thermal, and CFD modeling.

Listed on Lynk Global’s careers site · Apply there ↗

KLA-Tencor

Milpitas, CA · $117,800 – $200,300

KLA's RAPID division is hiring a senior mechanical engineer to design precision inspection systems for semiconductor manufacturing equipment. This role suits an experienced engineer who can own complex projects from concept through production, balancing technical rigor with practical manufacturability in a fast-paced environment.

Listed on KLA-Tencor’s careers site · Apply there ↗

Merck

Full-time · Rahway, NJ · $173,200 – $272,600

A senior scientist position developing cell culture manufacturing processes for biologics in clinical and commercial stages. This role suits experienced bioprocess engineers or biochemists who can lead technical strategy, mentor teams, and drive innovation in upstream development while managing complex cross-functional projects.

Listed on Merck’s careers site · Apply there ↗

Impulse Space

Redondo Beach

You will develop high-performance turbomachinery systems through design, analysis, build, and test cycles in a collaborative aerospace engineering environment. This role suits experienced engineers who want hands-on technical leadership in propulsion systems at an agile company.

Listed on Impulse Space’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 ↗

Relativity Space

Long Beach, CA · $160,000 – $240,000

This role leads a team of engineers analyzing fluid dynamics and thermal systems for a rocket propulsion company, translating complex physics into practical hardware designs. It suits experienced aerospace engineers with team leadership skills and CFD expertise who want hands-on involvement in vehicle development.

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