Mechanical Engineer, Flight Termination System (Starship) SpaceXMechanical Engineer, Flight Termination System (Starship)Hawthorne, CA$100,000–$117,500 / yearDevelop state-of-the-art, manufacturable explosive devices and robust hardware integration designs (system controllers, electronic safe and arm devices, destruct charges, and integrated detonators) for the Starship and Super Heavy stage Flight Termination System. To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State.
Mechanical Engineer (Starshield) SpaceXMechanical Engineer (Starshield)Hawthorne, CA$100,000–$117,500 / yearEstablish an efficient product lifecycle starting in the supply chain through final integration that balances cost, complexity, and quality; work closely with partner teams to design and realize an efficient in-house production line. Own hardware or systems within an integrated engineering team outside a classroom setting (FSAE, Engineers without Borders, Student Directed Research, Design-Build-Fly, NASA student launch, personal entrepreneurial ventures, etc.).
Mechanical Engineer, Factory Automation HadrianMechanical Engineer, Factory AutomationLos Angeles, CA$130,000–$220,000 / yearBacked by leading investors including JPMorgan Chase, Valor Equity Partners, Andreessen Horowitz, Founders Fund, 137 Ventures, Lux Capital, T. Rowe Price, and Morgan Stanley, we're building the future of American manufacturing-and looking for exceptional people to help make it happen. Series D at a $7.87B valuation, Hadrian is rapidly expanding our manufacturing footprint, launching new capabilities across welding, casting, forging, electronics, additive manufacturing, and more, while scaling our Factory-as-a-Service platform to transform how critical products are built.
Senior Mechanical Engineer GitaiSenior Mechanical EngineerLos Angeles, CaliforniaTo conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), GITAI Employees must be a U.S. citizen, lawful U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum, or be eligible to obtain the required authorizations from the U.S. Department of State and/or the U.S. Department of Commerce, as applicable. We value engineers who learn unfamiliar technical domains quickly, approach new problems with an open mind, and apply strong engineering judgment developed in other industries to space and defense missions.
NewMechanical Engineer – Ground Systems (MGSE) Apex TechnologyMechanical Engineer – Ground Systems (MGSE)Los Angeles, CaliforniaYou’ll work hands-on with hardware and collaborate closely with engineering, test, and manufacturing teams to ensure that Apex spacecraft are supported by reliable, efficient, and scalable mechanical ground support systems. Apex is looking for a Mechanical Engineer – Ground Systems (MGSE) to join our team and help design, build, and support the equipment that makes spacecraft integration, testing, and launch possible.
Mechanical Engineer, Space Robotics GitaiMechanical Engineer, Space RoboticsLos Angeles, CaliforniaThe Mechanical Engineer, Space Robotics owns the end-to-end development of assigned mechanical hardware for robotic spacecraft systems, including robotic arms mounted to satellite buses, satellite bus structures, solar array mechanisms, battery system enclosures, avionics packaging, mounting structures, fixtures, and ground support equipment. To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), GITAI Employees must be a U.S. citizen, lawful U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum, or be eligible to obtain the required authorizations from the U.S. Department of State and/or the U.S. Department of Commerce, as applicable.
Senior/Principal Mechanical Engineer Starpath RoboticsSenior/Principal Mechanical EngineerHawthorne, CaliforniaDepending on your prior work experience, you may work on a variety of systems, such as: (1) low-cost, high-reliability electromechanical actuators, (2) various structures and passive mechanisms, or (3) thermal control systems and autonomy hardware integration. EAR REQUIREMENTS: To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State.
Mechanical Engineer Johnson Service GroupMechanical EngineerSun Valley, CAGenerate CAD drawings using AutoCAD and Solid works for mechanical, electrical, Subassemblies components for test fixtures and molds. Mechanical Engineer responsible and authority for controlling product configuration regarding product series, assemblies, production methods components.
Hardware Design and Test Engineer - Board Neros TechnologiesHardware Design and Test Engineer - BoardTorrance, California$112,500–$157,500 / yearThis role bridges product design, manufacturing, and test engineering by developing scalable, high-coverage board-level test systems that improve product quality, accelerate root-cause analysis, and enable efficient production ramping. Ability to work cross-functionally with Electrical Engineering, Firmware, Manufacturing, Quality, Supply Chain, and Contract Manufacturing partners to deploy scalable, reliable test solutions across both Neros and supplier production site.
Mechanical Engineer, Fluid Systems - 2026 New Graduate Radiant NuclearMechanical Engineer, Fluid Systems - 2026 New GraduateEl Segundo, CAPortable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. Radiant's unique, practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials.
Senior Mechanical Engineer, Mechanisms Radiant NuclearSenior Mechanical Engineer, MechanismsEl Segundo, CAPortable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. Perform detailed thermomechanical analysis (static strength, durability/fatigue) and kinematic analysis to determine structural integrity and performance margins using both hand calculations and finite element tools.
Mechanical Engineer III - Spacecraft Programs Quantum SpaceMechanical Engineer III - Spacecraft ProgramsHawthorne, CaliforniaTo comply with U.S. Government space technology export regulations, including ITAR, applicants must be a U.S. citizen, lawful permanent resident, protected individual per 8 U.S.C. 1324b(a)(3), or eligible to obtain required authorizations. You will operate at the intersection of mechanical design, thermal management, and high-performance hardware development, working closely with propulsion, systems, and test teams.
Mechanical Engineer, Fluid Systems Radiant NuclearMechanical Engineer, Fluid SystemsEl Segundo, CAPortable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases. Radiant's unique, practical approach to nuclear development leverages modern software engineering to rapidly deliver safe, factory-built microreactors that use existing, well-qualified materials.
Mechanical Engineer III - Advanced Manufacturing Quantum SpaceMechanical Engineer III - Advanced ManufacturingHawthorne, California$125,000–$155,000 / yearYou will operate at the intersection of mechanical design, thermal management, and high-performance hardware development, working closely with propulsion, systems, and test teams. To comply with U.S. Government space technology export regulations, including ITAR, applicants must be a U.S. citizen, lawful permanent resident, protected individual per 8 U.S.C. 1324b(a)(3), or eligible to obtain required authorizations.
Senior Mechanical Engineer - Structures Radiant NuclearSenior Mechanical Engineer - StructuresEl Segundo, CAPerform detailed thermomechanical analysis (static strength, durability/fatigue) and dynamic analysis (vibration, shock) to determine structural integrity (margins of safety) using both hand calculations and finite element tools. Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases.
NewSenior Mechanical Engineer - Turbomachinery Rotordynamics Radiant NuclearSenior Mechanical Engineer - Turbomachinery RotordynamicsEl Segundo, CARadiant is seeking a highly motivated Senior Mechanical Engineer, Turbomachinery (Rotordynamics) to join the team responsible for the power generation and primary cooling turbomachinery of our Kaleidos product. Portable nuclear power with rapid-deploy capability can replace similar-sized diesel generators and provide critical asset support for hospitals, data centers, remote sites, and military bases.
NewSenior RF Digital Payload Engineer I Pipeline Rocket Lab CorporationSenior RF Digital Payload Engineer I PipelineLong Beach, CA$130,000–$170,000 / yearTo conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), Rocket Lab Employees must be a U.S. citizen, lawful U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum, or be eligible to obtain the required authorizations from the U.S. Department of State and/or the U.S. Department of Commerce, as applicable. Our Space Systems business designs and builds our extensive line of satellites, payloads, and their components, including spacecraft that have been selected to support NASA missions to the Moon and Mars and components used on the James Webb Space Telescope.
NewRF Systems Engineer I/II - TS/SCI Pipeline Rocket Lab CorporationRF Systems Engineer I/II - TS/SCI PipelineLong Beach, CA$85,000–$126,000 / yearTo conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR), Rocket Lab Employees must be a U.S. citizen, lawful U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum, or be eligible to obtain the required authorizations from the U.S. Department of State and/or the U.S. Department of Commerce, as applicable. Our Space Systems business designs and builds our extensive line of satellites, payloads, and their components, including spacecraft that have been selected to support NASA missions to the Moon and Mars and components used on the James Webb Space Telescope.
Mechanical Engineer II VastMechanical Engineer IIHawthorne, California$110,000–$155,000 / yearVast is developing next-generation space stations to ensure a continuous human presence in space for America and its allies, enabling advanced microgravity research and manufacturing, and unlocking a new space economy for government, corporate, and private customers. We also take pride in offering exceptional food perks, with snacks, drip coffee & onsite barista, cold drinks, and dinner meals remaining free of charge, and lunch subsidized as part of Vast’s ongoing commitment to providing high-quality meals for employees.
Mechanical Engineer I, Avionics, Haven VastMechanical Engineer I, Avionics, HavenLong Beach, California$86,000–$122,000 / yearVast is developing next-generation space stations to ensure a continuous human presence in space for America and its allies, enabling advanced microgravity research and manufacturing, and unlocking a new space economy for government, corporate, and private customers. We also take pride in offering exceptional food perks, with snacks, drip coffee & onsite barista, cold drinks, and dinner meals remaining free of charge, and lunch subsidized as part of Vast’s ongoing commitment to providing high-quality meals for employees.