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.
Senior Build Engineer AmcaSenior Build EngineerEl Segundo, California$140,000–$180,000 / yearToday, we operate seven factories nationwide, including our advanced prototyping and testing headquarters in El Segundo, and deliver avionics, hydraulic, and electrical components for platforms such as the F-35, F-16, F/A-18, 737MAX, 787, A320neo, A321, Mk-48, and M1 Abrams. To help close that gap, Amca rapidly develops and manufactures new critical components and subsystems required to build and sustain the planes, military vehicles, and core infrastructure America needs.
Senior Mechanical Engineer, Additive Manufacturing ElastiumSenior Mechanical Engineer, Additive ManufacturingLos Angeles, CAAt Elastium, you won’t be another engineer optimizing inside an existing box—you’ll build in the wild, architecting a new industrial era where factories run like software, starting with footwear. We're building the most frictionless way of turning bits into useful atoms, sending ripples of singularity across the industry, and bringing tens of billions of GDP back to America.
NewSenior Avionics Mechanical Engineer Relativity SpaceSenior Avionics Mechanical EngineerLong Beach, CaliforniaAny unsolicited submission - via email, our website, social media, or directly to an employee - will be deemed the property of Relativity Space, and no fee will be owed absent a current, fully executed agreement with Talent Acquisition that specifically authorizes submissions for the applicable role. By creating a sustainable model for interplanetary exploration, we are transforming space science from an occasional event into a continuous process of discovery that accelerates knowledge, broadens participation, and inspires the next generation of explorers.
Mechanical Engineer, Tooling And Mgse (Ii-Iii) True AnomalyMechanical Engineer, Tooling And Mgse (Ii-Iii)Long Beach, CA$90,000–$135,000 / yearExperience designing large structural weldments for tooling or GSE applications - welded steel frames, integration stands, support structures, or handling fixture bases - including joint selection, weld symbol callouts per AWS A2.4, and distortion mitigation strategies. You will independently execute tooling and MGSE designs ranging from assembly fixtures and handling systems to STE and precision integration equipment, while beginning to take on mentoring and technical leadership responsibilities.
Software Engineer II, Spacecraft Simulation True AnomalySoftware Engineer II, Spacecraft SimulationLong Beach, CA$90,000–$140,000 / yearYou will work in a fast-paced, interdisciplinary team to identify, develop, and deliver algorithms for modeling complex coupled physics including 6-degree-of-freedom (6DOF) rigid body dynamics, thermal systems, attitude dynamics and control, power systems, propulsion, and their interactions. Develop and maintain multi-physics simulation libraries for spacecraft systems modeling including: 6DOF rigid body dynamics with environmental perturbations (gravity gradient, solar radiation pressure, atmospheric drag, magnetic torques).
Mechanical Engineer, Space Based Interceptorstooling & Mgse Design (Senior - Staff) True AnomalyMechanical Engineer, Space Based Interceptorstooling & Mgse Design (Senior - Staff)Long Beach, CA$135,000–$200,000 / yearDemonstrated expertise designing large structural weldments for aerospace GSE and tooling - welded steel frames, launcher support structures, integration stands, and handling bases - with proficiency in weld joint design, weld symbol specification per AWS A2.4, pre- and post-weld distortion control, material selection for weldability, and vendor qualification of WPS and welder certifications. We are seeking a Senior or Staff Mechanical Engineer, Space Based Interceptors Tooling & MGSE Design to serve as technical authority and team leader for tooling and ground support equipment across our Space Based Interceptors programs.
NewManufacturing Integration and Test Engineer II, Subassemblies Relativity SpaceManufacturing Integration and Test Engineer II, SubassembliesLong Beach, CaliforniaAny unsolicited submission - via email, our website, social media, or directly to an employee - will be deemed the property of Relativity Space, and no fee will be owed absent a current, fully executed agreement with Talent Acquisition that specifically authorizes submissions for the applicable role. Proficient in GD&T, CAD, and basic design or test analysis, with experience in at least two of the following: LOX cleanliness, leak checking, sensor checkouts, tube bending, tool design, crane operations, or subassembly builds .
NewManufacturing Engineer II, Mechanical Assembly Relativity SpaceManufacturing Engineer II, Mechanical AssemblyLong Beach, CaliforniaAny unsolicited submission - via email, our website, social media, or directly to an employee - will be deemed the property of Relativity Space, and no fee will be owed absent a current, fully executed agreement with Talent Acquisition that specifically authorizes submissions for the applicable role. Proficient in GD&T, CAD, and basic design or test analysis, with experience in at least two of the following: LOX cleanliness, leak checking, sensor checkouts, tube bending, tool design, crane operations, or subassembly builds .
Spacecraft Mechanical Production Engineer (Ii-Iii) True AnomalySpacecraft Mechanical Production Engineer (Ii-Iii)Long Beach, CA$95,000–$135,000 / yearTo conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. As a Spacecraft Mechanical Production Engineer you will have the opportunity to develop, implement, and optimize the production processes for mechanical structures and mechanism systems for multiple vehicles types at True Anomaly.
Senior Mechanical Design Engineer [Propulsion] OdysSenior Mechanical Design Engineer [Propulsion]Long Beach, CaliforniaIn this role, you will design, analyze, and integrate mechanical and thermal systems that support high-power hybrid-electric propulsion, including motors, generators, inverters, turbines and their supporting structures and cooling systems. Lead design and analysis of rotating machinery subsystems (turbines, motors, generators), addressing vibration, dynamic balancing, and bearing/seal challenges.
Sr Mechanical Engineer TAE Technologies IncSr Mechanical EngineerIrvine, CA$135,000–$150,000 / yearThis is a guideline rather than a fixed threshold: candidates with fewer years but strong alignment with the desired skills described below are encouraged to apply, and candidates newer to some of these disciplines may be considered for a developmental path into the role. At TAE Technologies, we consider a wide range of factors when making compensation decisions including but not limited to skill sets; experience and job-related knowledge, training; licenses and certifications, and other business and organizational needs.
Senior Thermal Modeling & Analysis Engineer Radiant NuclearSenior Thermal Modeling & Analysis EngineerEl 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.
Structures Engineer, Turbomachinery Static Hardware Valar AtomicsStructures Engineer, Turbomachinery Static HardwareTorrance, CaliforniaAs part of the Engineering organization, Power Conversion develops the technologies that efficiently transform reactor-generated heat into usable electrical power. We are a team of builders, engineers, and operators who believe nuclear energy should be fast to deploy, factory-made, and built for the real world.
Cycle Performance Engineer - Turbomachinery Valar AtomicsCycle Performance Engineer - TurbomachineryTorrance, CaliforniaAs part of the Engineering organization, Power Conversion develops the technologies that efficiently transform reactor-generated heat into usable electrical power. We are a team of builders, engineers, and operators who believe nuclear energy should be fast to deploy, factory-made, and built for the real world.
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. To conform to U.S. Government export regulations, you 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.
NewAvionics Mechanical Engineer II Relativity SpaceAvionics Mechanical Engineer IILong Beach, CaliforniaAny unsolicited submission - via email, our website, social media, or directly to an employee - will be deemed the property of Relativity Space, and no fee will be owed absent a current, fully executed agreement with Talent Acquisition that specifically authorizes submissions for the applicable role. You will be responsible for ensuring the delivered Avionics can survive launch and space environments, and for solving complex thermal and structural challenges in tight, mass-efficient packaging.
NewMaterials & Processes Engineer I Relativity SpaceMaterials & Processes Engineer ILong Beach, CaliforniaAny unsolicited submission - via email, our website, social media, or directly to an employee - will be deemed the property of Relativity Space, and no fee will be owed absent a current, fully executed agreement with Talent Acquisition that specifically authorizes submissions for the applicable role. Passion to work in a fast-paced and challenging environment on constantly iterating Terran-R products + processes, driving big impact on critical program needs as we ramp manufacturing rate + achieve reuse .
Senior Data & AI Platform Engineer Armanino McKenna Certified Public Accountants & ConsultantsSenior Data & AI Platform EngineerEl Segundo, CA$112,800–$153,700 / yearArmanino LLP is a licensed independent CPA firm that provides attest services, and Armanino Advisory LLC and its subsidiary entities provide tax, advisory, and business consulting services. Design, build, and own CI/CD workflows for data and analytics assets (pipelines, jobs, semantic models, reports), including branching strategy, promotion, approvals, and rollback.
NewThermal Engineer, Turbomachinery Valar AtomicsThermal Engineer, TurbomachineryTorrance, California$140,000–$215,000 / yearAs part of the Engineering organization, PowerConversion develops the technologies that efficiently transform reactor-generated heat into usable electrical power. We are a team of builders, engineers, and operators who believe nuclear energy should be fast to deploy, factory-made, and built for the real world.