66 open listings · Page 2 of 3
Roles posted by organizations here, alongside roles we found on employers’ own careers sites. Crawled roles say so on the card and send you to the employer to apply. Only show organizations on Career App
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Vehicle Structures Design Engineer II
Relativity Space
Long Beach, CA · $104,000 – $156,000
Design and develop structural components and assemblies for Terran R rockets, from initial concept through manufacturing support, with hands-on ownership of flight hardware. This role suits mid-level mechanical engineers who thrive in fast-paced environments and want to see their work directly impact a tangible product.
Listed on Relativity Space’s careers site · Apply there ↗
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Mechanical Associate Engineer (Winter 2027)
Astranis
San Francisco, CA · $1,925 / week
Astranis is hiring a mechanical engineer for a twelve-week paid internship-style role working on satellite hardware and software design, build, and test. This suits recent engineering graduates who want hands-on experience on real flight projects in a fast-paced environment.
Listed on Astranis’s careers site · Apply there ↗
Sr. Mechanical Design Engineer - Wafer Chucks & Wafer Positioning Stages
KLA-Tencor
Full-time · Milpitas, CA · $117,800 – $200,300
KLA seeks a mechanical design engineer to develop high-precision wafer positioning and motion systems for semiconductor equipment, working with multi-functional teams to design and optimize nanometer-level accurate components. This role suits engineers experienced in precision mechanics and motion systems who want to contribute to the hardware that enables advanced semiconductor manufacturing.
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Senior Valve Design Engineer I
CesiumAstro
Full-time · El Segundo, CA · $118,000 – $142,000
A hands-on design role focused on pneumo-hydraulic valve systems for aerospace applications, reporting to leadership and mentoring other engineers. Suited for someone with CAD and simulation expertise who wants to drive technical direction in a startup environment.
Listed on CesiumAstro’s careers site · Apply there ↗
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Senior Mechanisms Systems Engineer
Relativity Space
Long Beach, CA · $132,000 – $198,000
A systems engineer role leading the design and integration of complex mechanical systems like thrust vector control for a commercial rocket program. This suits engineers with 5+ years in mechanical or electromechanical systems who want to own mission-critical hardware across full development cycles and collaborate with avionics and software teams.
Listed on Relativity Space’s careers site · Apply there ↗
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Mechanical Engineer Intern (Spring 2027)
Astranis
Internship · San Francisco, CA · $29 / hour
Astranis is seeking a mechanical engineering intern to spend twelve weeks designing, building, and testing satellite hardware and structures for spacecraft that will launch to orbit. This role suits current undergraduates pursuing degrees in mechanical or aerospace engineering who enjoy hands-on work and are ready to tackle real engineering problems with immediate impact.
Listed on Astranis’s careers site · Apply there ↗
Sr. Mechanical Design Engineer (Opto-Mechanical/Thermal Systems)
KLA-Tencor
Full-time · Milpitas, CA · $141,300 – $240,200
KLA is seeking a senior mechanical design engineer to develop next-generation opto-mechanical assemblies for broadband plasma wafer inspection systems used in semiconductor manufacturing. This role is ideal for someone with a strong track record in optical and thermal design who enjoys collaborating across engineering disciplines to bring innovative inspection products from concept to production.
Listed on KLA-Tencor’s careers site · Apply there ↗
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Senior Mechanisms Engineer
Relativity Space
Long Beach, CA · $132,000 – $198,000
This role involves designing and testing critical mechanisms for a commercial rocket, including stage separation systems, landing gear, and deployment mechanisms. It's suitable for experienced mechanical engineers who thrive in fast-paced hardware development and want hands-on ownership of flight-critical systems.
Listed on Relativity Space’s careers site · Apply there ↗
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Mechanical Engineer Intern (Summer 2027)
Astranis
Internship · San Francisco, CA · $29 / hour
Astranis seeks an undergraduate mechanical engineering student for a 12-week summer internship designing and testing spacecraft hardware and mechanisms. This role suits students eager to contribute to real satellite projects that will launch to orbit, with hands-on experience in CAD, structural analysis, and assembly processes.
Listed on Astranis’s careers site · Apply there ↗
Sr. Mechanical Engineering Manager — Vacuum Systems
KLA-Tencor
Full-time · Milpitas, CA · $181,000 – $307,700
This role leads a mechanical engineering team developing precision hardware for next-generation EUV light sources in semiconductor reticle inspection equipment, operating in extreme vacuum and thermal environments. It suits an experienced engineering manager who has built capital equipment at high complexity and wants to own subsystem architecture across vacuum, optics, and thermal-mechanical integration.
Listed on KLA-Tencor’s careers site · Apply there ↗
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Senior Mechanical Engineer (Mechanisms)
Relativity Space
Long Beach, CA · $132,000 – $198,000
Relativity Space seeks a mechanical engineer to design and develop flight mechanisms for their Terran R rocket, including stage separation systems, landing gear, and control actuators. This role suits someone with aerospace design experience who thrives owning complex hardware projects from concept through testing and manufacturing.
Listed on Relativity Space’s careers site · Apply there ↗
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Mechanical Engineer Intern (Winter 2027)
Astranis
Internship · San Francisco, CA · $29 / hour
This is a 12-week paid internship for mechanical engineers working on real satellite hardware and systems at a space technology company. It suits current undergraduates eager to contribute to flight-bound projects in a hands-on engineering environment.
Listed on Astranis’s careers site · Apply there ↗
Mechanical Design Engineer – Process Media and Vacuum Systems (Pipe & Instrumentation Diagram)
KLA-Tencor
Milpitas, CA · $141,300 – $240,200
KLA seeks a mechanical engineer to design and architect the gas, water, cryogenic, and vacuum distribution systems for advanced semiconductor manufacturing equipment. This role combines system-level architecture work with hands-on CAD design, P&ID documentation, and cross-functional leadership of a critical subsystem.
Listed on KLA-Tencor’s careers site · Apply there ↗
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Senior Electro-Mechanical Engineer
Relativity Space
Long Beach, CA · $132,000 – $198,000
Senior engineer guiding the design and testing of rocket mechanisms like stage separation and landing gear systems, working across structures, avionics, and manufacturing teams to deliver flight-ready hardware. Suits someone with aerospace or complex product development experience who thrives in fast-paced environments and wants hands-on ownership of critical subsystems.
Listed on Relativity Space’s careers site · Apply there ↗
Sr. Mechanical Engineer
KLA-Tencor
2 locations · $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.
Computational Fluid Dynamics (CFD)Vibration AnalysisStructural AnalysisFinite Element Analysis (FEA)Geometric Dimensioning and Tolerancing (GD&T)
Listed on KLA-Tencor’s careers site · Apply there ↗
Choose a location to apply
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Senior Mechanical Engineer- Spacecraft Design
Astranis
Full-time · San Francisco, CA · $145,000 – $225,000
Astranis is seeking a seasoned mechanical engineer to lead the design and lifecycle management of spacecraft subsystems, from concept through on-orbit operation. The role combines individual technical expertise in structures and mechanisms with mentorship of junior engineers, suited for someone with deep aerospace hardware experience who thrives in a fast-paced development environment.
ANSYSMechanical DesignFinite Element Analysis (FEA)SolidWorksGeometric Dimensioning and Tolerancing (GD&T)
Listed on Astranis’s careers site · Apply there ↗
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Staff Avionics Mechanical Engineer
Relativity Space
Long Beach, CA · $150,000 – $226,000
You'll design and deliver mechanical systems for advanced avionics platforms destined for space science missions, working hands-on from concept through flight qualification. This role suits experienced aerospace engineers comfortable owning complex thermal and structural challenges in a fast-moving environment where your decisions directly shape the next generation of interplanetary exploration hardware.
Listed on Relativity Space’s careers site · Apply there ↗
Sr. Mechanical Design Engineer
KLA-Tencor
Full-time · 3 locations · $141,300 – $240,200
Lead the mechanical redesign of advanced semiconductor inspection systems with expertise in ultra-high vacuum and high-voltage integration, guiding cross-functional teams from architecture through production support. This role suits experienced engineers ready to own complex subsystem leadership and mentor junior staff in a fast-paced, innovation-driven environment.
Vibration AnalysisStatistical AnalysisCreoFinite Element Analysis (FEA)Geometric Dimensioning and Tolerancing (GD&T)
Listed on KLA-Tencor’s careers site · Apply there ↗
Choose a location to apply
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Mechanical Engineer - Spacecraft Design
Astranis
Full-time · San Francisco, CA · $110,000 – $160,000
This role designs and develops mechanical systems for satellites operating in high orbits, working with structure, mechanisms, and thermal components from concept through assembly and test. It suits engineers with 2-4 years of mechanical design experience who want hands-on involvement in spaceflight hardware and can thrive in a fast-paced environment.
Listed on Astranis’s careers site · Apply there ↗
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Senior Avionics Mechanical Engineer
Relativity Space
Long Beach, CA · $129,000 – $193,000
This role involves designing and delivering the mechanical systems that support advanced avionics platforms for space science missions, including enclosures, thermal solutions, and structural components that must survive launch and space environments. It suits an experienced mechanical engineer comfortable working hands-on in a fast-paced aerospace setting, iterating rapidly from concept through flight qualification.
Listed on Relativity Space’s careers site · Apply there ↗
Mechanical Design Engineer (vacuum system)
KLA-Tencor
Milpitas, CA · $117,800 – $200,300
KLA seeks a mechanical design engineer to lead the development of ultra-clean vacuum subsystems for semiconductor inspection equipment, working across optics, electrical, and controls teams to deliver precision chambers and integrated platforms. This role suits someone with strong CAD and analysis skills who thrives on complex multi-disciplinary systems and can mentor junior engineers through detailed design cycles.
Listed on KLA-Tencor’s careers site · Apply there ↗
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Mechanical Engineer, Electronics Packaging & RF Components
Astranis
San Francisco, CA · $110,000 – $160,000
Design and develop mechanical enclosures for spacecraft electronics and RF components, managing the complete lifecycle from requirements through testing while solving complex challenges in thermal management, EMI isolation, and launch survivability. This role suits engineers with hands-on hardware experience who enjoy bridging mechanical and RF engineering disciplines in a fast-paced space technology environment.
ANSYSCreoFinite Element Analysis (FEA)SolidWorksSiemens NXGeometric Dimensioning and Tolerancing (GD&T)
Listed on Astranis’s careers site · Apply there ↗
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Senior Mechanical Engineer (Terran-R Structures)
Relativity Space
Long Beach, CA · $132,000 – $198,000
Relativity Space seeks a hands-on mechanical engineer to design, analyze, and test primary and secondary structures for their Terran R rocket, working across the full development cycle from concept through manufacturing support. This role suits someone with 5+ years of structural design experience who thrives in a fast-paced startup environment, owns projects end-to-end, and balances creative innovation with rigorous engineering discipline.
Listed on Relativity Space’s careers site · Apply there ↗
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Senior Mechanical Engineer, Electronics Packaging & RF Components
Astranis
Full-time · San Francisco, CA · $145,000 – $225,000
You'll design and test mechanical enclosures for satellite electronics and RF components, solving complex problems in thermal management, EMI shielding, and structural survivability for space. This role suits experienced mechanical engineers who enjoy hands-on hardware work and thrive at the intersection of mechanical, thermal, and RF engineering challenges.
Listed on Astranis’s careers site · Apply there ↗
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Senior Vehicle Structures Design Engineer
Relativity Space
Long Beach, CA · $132,000 – $198,000
This role designs structural components and assemblies for Relativity's Terran R rocket, from concept through manufacturing support, working with metals, composites, and sheet metal across all vehicle stages. It suits experienced mechanical engineers who thrive in fast-paced environments, enjoy hands-on hardware ownership, and can balance creative problem-solving with rigorous technical discipline.
Listed on Relativity Space’s careers site · Apply there ↗