NewQuality Engineer Senra SystemsQuality EngineerCypress, CA$95,000–$140,000 / yearIn this role, you will partner closely with production, manufacturing engineering, and leadership teams to ensure our processes deliver consistent, high-reliability products as we ramp production. The ideal candidate is someone who enjoys working directly with technicians and engineers on the production floor, has strong analytical problem-solving skills, and takes ownership of improving systems rather than simply maintaining them.
NewAerothermal Engineer II Relativity SpaceAerothermal Engineer IILong Beach, CA$103,000–$155,000 / yearAny 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. Recently, we completed the preliminary design and analysis of Terran R including Relativity's first-ever work on launch vehicle reusability, spanning advanced trajectory simulations, wind tunnel testing, and structures analysis, among many other projects.
NewSr Aerodynamics Engineer Relativity SpaceSr Aerodynamics EngineerLong Beach, CA$132,000–$198,000 / yearAny 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. Recently, we completed the preliminary design and analysis of Terran R including Relativity's first-ever work on launch vehicle reusability, spanning advanced trajectory simulations, wind tunnel testing, and structures analysis, among many other projects.
NewSenior Thermal Engineer Relativity SpaceSenior Thermal EngineerLong Beach, CA$132,000–$198,000 / yearAny 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. The team works across the full launch system, from trajectory design and aerodynamics to reliability analysis and beyond, with direct influence on all parts of the product lifecycle, from conceptual design to post-flight data review.
NewSenior Mechanisms Engineer Castelion CorporationSenior Mechanisms EngineerTorrance, CAYou will work hands-on with multidisciplinary engineering teams to design, analyze, build, and validate mechanisms such as elevon drive trains and related actuation systems in a fast-paced, hardware-driven environment. We are seeking a Senior Mechanisms Engineer to design and deliver high-performance mechanical actuation systems for Castelion's long-range hypersonic strike vehicles.
NewAerospace Quality Engineer- Level 1 Trigo ADR AmericasAerospace Quality Engineer- Level 1Valencia, CA$35–$42 / hourTrigo’s team of dedicated Delivery Assurance Specialists, Supplier Development Specialists, Supplier Quality Engineers and Program Managers support hundreds of Customers and are deployed to thousands of Suppliers worldwide focused on achieving On-Time and On-Quality Delivery results. The Quality Engineer is highly supplier-focused, requiring excellent interpersonal and communication skills (oral and written) to manage supplier quality assurance responsibilities and ensure compliance across and at all levels of the organization on major programs from design through production stages.
NewSenior Mechanical Engineer DivergentSenior Mechanical EngineerLos Angeles, CA$128,520–$176,720 / yearWork involves regular interaction with industrial equipment and may include moving machinery, elevated noise, metal powders, inert gas systems, lasers, and high-power electrical equipment. Lead technical coordination across engineering, manufacturing, quality, supply chain, suppliers, and other stakeholders; communicate decisions, status, risks, actions, and required support clearly.
NewSenior Optics Engineer Space KineticSenior Optics EngineerEl Segundo, CA$150,000–$190,000 / yearOur goal is to move away from one-to-one space architectures – where each satellite in a constellation has one (or a small number of) primary payloads attached to the bus – and unlock a "one-to-many" system, where each satellite has a large number of payloads which can be deployed from their host spacecraft at high velocities without firing a thruster. Space Kinetic is a dual use space technology startup building a completely new architecture for space operations – one that brings the advantages of proliferated drone technology (low-cost, operationally flexible, attritable, distributed) to space missions while reducing the ecosystem's reliance on consumable fuel.
NewSenior Materials Engineer (Metal 3D Printing) FreeformSenior Materials Engineer (Metal 3D Printing)Los Angeles, CA$125,000–$200,000 / yearJob Description SENIOR MATERIALS ENGINEER (METAL 3D PRINTING) Freeform builds AI-native manufacturing systems that unify software, hardware, and physics to produce industrial-scale parts at the speed of human ideation. Compensation As a growing company, the salary range is intentionally wide as we determine the most appropriate package for each individual taking into consideration years of experience, educational background, and unique skills and abilities as demonstrated throughout the interview process.
NewQuality Engineer Space KineticQuality EngineerEl Segundo, CA$120,000–$160,000 / yearSpace Kinetic is a dual use space technology startup building a completely new architecture for space operations – one that brings the advantages of proliferated drone technology (low-cost, operationally flexible, attainable, distributed) to space missions while reducing the ecosystem's reliance on consumable fuel. Our goal is to move away from one-to-one space architectures – where each satellite in a constellation has one (or a small # of) primary payloads attached to the bus -- and unlock a 'one-to-many' system, where each satellite has a large number of payloads which can be deployed from their host spacecraft at high velocities without firing a thruster.
NewTest Engineer, Mechanical/Fluids Radiant IndustriesTest Engineer, Mechanical/FluidsEl Segundo, CA$106,500–$146,475 / yearPrior experience working as an operator in fast-paced test environments (e.g., rocket engine testing, turbopump testing, component level testing), with familiarity in safety protocols, and high-reliability operations, high pressure gases, safety engineering (FMECAs, Keep-out Zone). You will collaborate with a multidisciplinary team to translate complex hardware and software designs into clear, executable test operations, with encompassing test procedures that will efficiently and safely execute test, commissioning, and operational activities.
NewSenior RF Engineer Relativity SpaceSenior RF EngineerLong Beach, CA$159,000–$204,000 / yearAny 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. As an RF Engineer on Relativity's Interplanetary Program, you will own the architecture, design, development, testing, and operation of next-generation high-reliability RF systems that enable deep-space communication, navigation, and science operations.
NewSenior Electrical Engineer BlueCore EnergySenior Electrical EngineerLong Beach, CABy designing and building advanced floating Pressurized Water Reactors (PWRs) on barges right here in Long Beach, CA, we are bringing scalable, clean, and reliable power to the world. Physical & Machinery Requirements: Because we are a hands-on startup, this role may require the ability to perform physical labor, navigate active construction/manufacturing zones, and/or operate heavy machinery and specialized manufacturing equipment as needed.
NewPrincipal Power Electronics Engineer I CesiumAstroPrincipal Power Electronics Engineer IEl Segundo, CAIn this position, you will contribute across the entire development lifecycle of next-generation power electronics hardware for satellites and space power systems payloads—from leading the definition of power system architectures and trade studies to detailed circuit design, simulation, printed circuit board (PCB) layout, verification and integration testing, production transition, and manufacturing support. Experience working with electrical power systems and subsystems, including developing power architecture and power requirements, performing trade studies for size, weight, power, and cost optimization (SWAP-C), selecting power converter topologies, and defining power management and control blocks.
NewSolar Array Test Engineer Impulse SpaceSolar Array Test EngineerRedondo Beach, CAThis position requires applicants to be either U.S. Persons (i.e., U.S. citizen, U.S. national, lawful permanent U.S. resident (green card holder), an individual granted asylum in the U.S., or an individual admitted in U.S. refugee status) or persons eligible to obtain an export license from the U.S. Departments of State, Commerce, or other applicable U.S. government agencies. You’ll work closely with solar array design, power electronics, systems engineering, and manufacturing teams to ensure robust, compliant, and high-performing solar hardware.
NewSenior Control Electronics Engineer Castelion CorporationSenior Control Electronics EngineerTorrance, CAYou will work hands-on with multidisciplinary engineering teams to design, build, test, and validate control electronics hardware, with a focus on thrust vector control (TVC) systems and attitude control system (ACS) drivers in a fast-paced, hardware-driven environment. We are seeking a Senior Control Electronics Engineer to design and deliver real-time electronic control systems for Castelion's long-range hypersonic strike vehicles.
NewElectrical Engineer Intern - Fall 2026 (Avionics) Castelion CorporationElectrical Engineer Intern - Fall 2026 (Avionics)Torrance, CACastelion is bringing a new approach to defense development and production: one that focuses on short, iterative design cycles, rapid testing in development, and modern commercial manufacturing strategies for production at scale. To conform to U.S. Government export regulations, the applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (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.
NewSenior Thermal Modeling Engineer Radiant IndustriesSenior Thermal Modeling EngineerEl Segundo, CA$139.50–$224.70 / hourPortable 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.
NewSenior Thermal-Hydraulics Engineer Radiant IndustriesSenior Thermal-Hydraulics EngineerEl Segundo, CA$139.50–$224.70 / hourPortable 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.
NewSupplier Quality / Development Engineer Radiant IndustriesSupplier Quality / Development EngineerEl Segundo, CA$100.50–$142.80 / hourOwn Radiant's procurement assurance and acceptance framework — define how items are accepted across supplier types and quality levels, establish purchase order quality requirements, certifications, material traceability, and compliance documentation, and build toward a graded, systematized model. While you'll have the technical depth to handle non-conformances and corrective actions when they arise, your primary focus is upstream: strengthening supplier processes, closing capability gaps, and building a supply base that performs without constant intervention.