Validation Engineer, Senior/Principal MACOM Technology Solutions Holdings IncValidation Engineer, Senior/PrincipalNewport Beach, CA$84,000–$166,000 / yearExcellent communications skills and the ability to thoroughly document all work performed to a degree sufficient to pass off to sustaining engineers for long term support, and to contract manufacturers for volume production. MACOM sells and distributes products globally via a sales channel comprised of a direct field sales force, authorized sales representatives and leading industry distributors.
Build Engineer, Turbomachinery Radiant NuclearBuild Engineer, TurbomachineryEl 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.
Build Engineer, Turbomachinery - 2026 New Graduate Radiant NuclearBuild Engineer, Turbomachinery - 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.
Hardware Engineer, Principal MACOM Technology Solutions Holdings IncHardware Engineer, PrincipalNewport Beach, CA$97,900–$166,600 / yearJob Description: The Hardware Engineer, Principal designs, develops, and documents complex interconnect solutions for internal hardware needs as well as for customer hardware reference designs, identifies techniques and methodologies for modeling and measurement of devices and systems and actively participates in the evaluations of these. MACOM sells and distributes products globally via a sales channel comprised of a direct field sales force, authorized sales representatives and leading industry distributors.
NewElectrical Design Engineer Salas O'Brien, Inc.Electrical Design EngineerTustin, CA$80,000–$125,000 / yearPart timeOur expertise includes data centers, healthcare, science and technology, high‑rise buildings, clean energy, education, and other building types, as well as structural and building sciences, infrastructure asset management, advanced robotics, and more. Building for the long term means our team members can expect to work on meaningful, challenging projects within a people‑first culture that values collaboration, curiosity, and thoughtful problem‑solving.
Mechanical Test Engineer III - Advanced Programs Quantum SpaceMechanical Test Engineer III - Advanced ProgramsHawthorne, CA$100,000–$150,000 / yearThis role is a strong fit for an engineer coming from a flight hardware integration and test background - someone who has written procedures, run environmental test campaigns, and worked hands-on with complex systems in controlled environments. Our Ranger spacecraft deliver high delta-V and sustained on-orbit maneuverability, enabling missions across cislunar and geostationary space that were previously out of reach.
Mechanical Test Engineer III - Advanced Manufacturing Quantum SpaceMechanical Test Engineer III - Advanced ManufacturingHawthorne, California$100,000–$150,000 / yearThis role is a strong fit for an engineer coming from a flight hardware integration and test background — someone who has written procedures, run environmental test campaigns, and worked hands-on with complex systems in controlled environments. Our Ranger spacecraft deliver high delta-V and sustained on-orbit maneuverability, enabling missions across cislunar and geostationary space that were previously out of reach.
Manufacturing Engineer - Pharmaceutical Actalent IncManufacturing Engineer - PharmaceuticalIrvine, CA$43–$53 / hourThe Mechanical Engineer provides hands-on support for automated manufacturing equipment, tooling, filling systems, welding operations, and packaging processes, while driving equipment reliability, quality improvements, and process optimization in a GMP-regulated environment. The engineer works closely with production, maintenance, quality, and technical teams on the manufacturing floor, frequently interacting with automated equipment, filling systems, welding stations, and packaging lines.
Systems Software Engineer III Sunbelt ControlsSystems Software Engineer IIICypress, CA$50–$65 / hourThe position requires the individual to apply their technical knowledge and experience for the successful database programming and custom graphics development and subsequent installation of this programming into the Building Management System for all assigned projects. Applicants please note that actual compensation is determined by several factors that are unique to each candidate, including but not limited to job-related skills, depth of experience, certifications, relevant education or training, and specific work location, among others.
Principal, Process Controls Engineer Barry-WehmillerPrincipal, Process Controls EngineerIrvine, CADesign Group is widely known as an industry leader, recognized as a top system integrator, ranking #9 in the 2025 System Integrator Giants; as a Rockwell Platinum Integrator, the highest designation given to Rockwell partners; and as an Ignition Enterprise Premier Integrator. By blending people-centric leadership with disciplined operational strategies and purpose-driven growth, Barry-Wehmiller has become a $3 billion organization with nearly 12,000 team members united by a common belief: to use the power of business to build a better world.
Senior Nuclear I&C Engineer – Hardware Valar AtomicsSenior Nuclear I&C Engineer – HardwareTorrance, California$144,000–$176,000 / yearThe role covers neutron flux detection, radiation monitoring, reactor protection system sensors and signal chains, and process instrumentation in nuclear service, applied through instrument selection and specification, signal chain and installation design, cabling and grounding, environmental and radiation qualification, and commissioning. Lead environmental and radiation qualification for assigned equipment: qualification plans, application service condition definition, review and acceptance of vendor qualification test reports and analyses, thermal and radiation aging analysis, and qualification documentation consistent with IEEE 323 and IEEE 344 methodologies. .
Supply Chain Engineer- Mechanical Varda Space Industries IncSupply Chain Engineer- MechanicalEl Segundo, CA$119,000–$139,000 / yearVarda was founded in January 2021 by Will Bruey and Delian Asparouhov with significant backing from world class investors including Khosla Ventures, Lux Capital, Founders Fund, Caffeinated Capital, General Catalyst, and Also Capital. Varda, like all employers, must ensure that its employees working in the United States are lawfully authorized to work in the U.S. Additionally, our employees are exposed to and have access to certain export-controlled items.
Senior Product Integration Engineer Mechanical/Automotive Harbinger Motors IncSenior Product Integration Engineer Mechanical/AutomotiveGarden Grove, CA$140,000–$160,000 / yearHarbinger may use your Candidate Personal Data for the purposes of (i) tracking interactions with our recruiting system; (ii) carrying out, analyzing and improving our application and recruitment process, including assessing you and your application and conducting employment, background and reference checks; (iii) establishing an employment relationship or entering into an employment contract with you; (iv) complying with our legal, regulatory and corporate governance obligations; (v) recordkeeping; (vi) ensuring network and information security and preventing fraud; and (vii) as otherwise required or permitted by applicable law. Harbinger may share your Candidate Personal Data with (i) internal personnel who have a need to know such information in order to perform their duties, including individuals on our HR, legal, and finance teams, and the team(s) with the position(s) for which you are applying; (ii) Harbinger affiliates; and (iii) Harbinger's service providers, including providers of background checks, staffing services, and cloud services.
Supplier Development Engineer, Mechanical (Falcon & Dragon) SpaceXSupplier Development Engineer, Mechanical (Falcon & Dragon)Hawthorne, CA$100,000–$117,500 / yearOwn the new product introduction of new parts and assemblies on the rocket, including determining the ideal manufacturing method, identifying and reviewing suppliers, and developing a reliable process for ramping to rate for parts that are new, undergoing drawing changes, or undergoing re-sourcing at a new supplier. 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.
Supplier Development Engineer, Mechanical (Falcon & Dragon) Space Exploration TechnologiesSupplier Development Engineer, Mechanical (Falcon & Dragon)Hawthorne, CA$100,000–$117,500 / yearOwn the new product introduction of new parts and assemblies on the rocket, including determining the ideal manufacturing method, identifying and reviewing suppliers, and developing a reliable process for ramping to rate for parts that are new, undergoing drawing changes, or undergoing re-sourcing at a new supplier. This is a highly technical and cross-functional position that requires practical experience in manufacturing engineering from new product development to stabilized production for the machined components and assemblies used in rockets and rocket engines.
NewHigh Performance Compute Responsible Engineer Relativity SpaceHigh Performance Compute Responsible EngineerLong Beach, CaliforniaArchitect and implement power delivery networks for high-complexity carrier boards, including 500W+ multi-rail designs with tight sequencing integrating GPU or CPU compute modules onto custom PCBs with high-speed coherent interconnects . Design and validate high-speed memory interfaces (HBM, DDR5), PCIe Gen 4/5 chip-to-chip links, and 10 GbE+ Ethernet connections to the payload network, along with board-level power monitoring, current limiting, and radiation upset recovery circuitry .
NewSenior Construction Design Engineer Relativity SpaceSenior Construction Design EngineerLong Beach, CaliforniaWe are responsible for cross functional relationships with teams such as Manufacturing, Propulsion, PBF, Avionics, Machine Shop, Facilities, EHS and Security to name a few, working through design specifications and execution of critical infrastructure projects that supports the mission of work centers. Any 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.
Senior Mechanical Design Engineer Space KineticSenior Mechanical Design EngineerEl Segundo, CA$120,000–$160,000 / yearWho We Are: 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, 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.
Sr. Robotics Design Engineer: Government Projects GrayMatter RoboticsSr. Robotics Design Engineer: Government ProjectsCarson, CaliforniaThe Senior Robotics Design Engineer: Government Projects will enable project success by leading the design, implementation and testing of complex robotic systems including integration of industrial six-axis robots, mobile robots, robot transporters, end-of-arm tooling and associated hardware in innovative manufacturing systems. In order to comply with the export regulations of the United States Government, it is required that the applicant must fall under one of the following categories: (i) U.S. citizen or national, (ii) U.S. lawful permanent resident (i.e. current green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158.
Spacecraft Design Engineer Apex SpaceSpacecraft Design EngineerLos Angeles, CAYou will operate at the design and development phase of the product lifecycle, shaping system architectures that balance performance, reliability, manufacturability, and cost for mass-manufactured satellite buses that enable access to Earth orbit and beyond. For the first time in history, this influx of payload companies combined with reduced launch costs has resulted in a massive increase in need for commercial spacecraft platforms, known as satellite buses.