Manager, Avionics Mechanical Design Engineering Relativity Space IncManager, Avionics Mechanical Design EngineeringLong Beach, CA$154,000–$211,000 / yearAbout the Team: The Avionics team is responsible for the full lifecycle of Terran R's nervous system, designing, building, testing, installing, and operating the hardware that connects and controls every major electrical system on the vehicle and ground. Engineers are deeply embedded into other functions within Relativity, working closely with propulsion, GNC, fluids, and stage engineering teams to ensure seamless integration and operation.
Mechanical Engineer Sunday RoboticsMechanical EngineerRedwood City, CaliforniaYou will play a key role in turning prototypes into reliable, manufacturable products, working hands-on with early designs and suppliers to ensure quality and scalability. This role is ideal for an engineer excited about working across the full product lifecycle — from whiteboard sketches and 3D CAD to testing, validation, and manufacturing handoff.
Senior Mechanical Engineer - Pulsed Power Pacific FusionSenior Mechanical Engineer - Pulsed PowerFremont, CaliforniaWe are seeking a highly motivated Senior Mechanical Engineer - Pulsed Power to design, build, operate, and advance our pulsed power systems — the core of our experimental fusion platform. We are rapidly designing and building a pulser-driven inertial fusion system to achieve net facility gain (more fusion energy output than stored energy input).
Mechanical Engineer - San Francisco PlaudMechanical Engineer - San FranciscoSan Francisco, CaliforniaBachelor's or Master's degree in Mechanical Engineering or a related field, with 5+ years of experience in mechanical design for consumer electronics, wearables, or smart hardware products. Plaud is building the real-world AI interface for professionals to amplify intelligence, elevate productivity and performance, loved by over 2,000,000 users worldwide since 2023.
Senior Mechanical Engineer, Systems Thermal & Fluid Dynamics Critical EnergySenior Mechanical Engineer, Systems Thermal & Fluid DynamicsHawthorne, CaliforniaCritical Energy’s technology delivers high-efficiency, 24/7 power for geothermal applications and waste heat recovery (including from data center gas turbines), making clean energy practical and cost-effective for demanding sectors like AI hyperscalers and data centers. This role focuses on system-level modeling, thermal management, and fluid flow analysis, primarily at the 1D level, across components such as heat exchangers, turbines, pumps, cooling & lubrication loops, and other balance-of-plant subsystems.
Mechanical Engineer - Pulsed Power Pacific FusionMechanical Engineer - Pulsed PowerFremont, California$115,000–$150,000 / yearWe are rapidly designing and building a pulser-driven inertial fusion system to achieve net facility gain (more fusion energy output than stored energy input). Design, build, and operate pulsed power systems, including high-voltage and high-current architectures, control systems for pulsed power operation, safety, and automation.
Mechanical Engineer, Ground Systems ZiplineMechanical Engineer, Ground SystemsSouth San Francisco, CA$135,000–$225,000 / yearOur customers include the world's largest and most prominent healthcare systems, governments, retailers, restaurants and global businesses who rely on us to save lives, reduce emissions, increase economic opportunity, and provide delivery from point A to point B as fast as possible. Develop and execute verification plans (environmental, fatigue, vibration, thermal, EMI/EMC where applicable), build test rigs/fixtures, run test campaigns, analyze results, and close findings with corrective actions and measurable reliability improvements.
NewSr. Staff Mechanical Engineer - BlueSky (R5825) Shield AI IncSr. Staff Mechanical Engineer - BlueSky (R5825)CA$240,000–$350,000 / yearIn this role, you will own hardware development across the full product lifecycle-working hands-on in CAD, analysis, and testing-while collaborating with cross-functional teams to build reliable, high-performance systems. Own mechanical engineering deliverables across the product lifecycle - from early concept and prototyping through test, production, and field support - with a bias toward execution and delivery.
Mechanical Engineer II, Hydrogen System Form Energy IncMechanical Engineer II, Hydrogen SystemBerkeley, CAYou can expect to work on various prototyping efforts across the company, driving us through a series of internal system prototypes and working closely with a cross-functional team of chemical, electrical, and mechanical engineers to design, prototype, and test the storage systems. In recent years, Form Energy has earned a number of accolades, including being named by TIME as a "Best Invention", MIT Technology Review as a "Top Climate Tech Company To Watch", and Fast Company as "One of the Next Big Things In Tech".
Senior Mechanical Engineer, Fluid Systems Form Energy IncSenior Mechanical Engineer, Fluid SystemsBerkeley, CAYou can expect to work on prototyping efforts across the company, build and validate models of our system, drive us through a series of design releases, and work closely with a cross-functional team of chemical, electrical, and mechanical engineers to design, prototype, and test the storage systems. In recent years, Form Energy has earned a number of accolades, including being named by TIME as a "Best Invention", MIT Technology Review as a "Top Climate Tech Company To Watch", and Fast Company as "One of the Next Big Things In Tech".
Mechanical Engineer III Iconma LLCMechanical Engineer IIISunnyvale, CA6+ years of industry experience in mechanical design, with demonstrated track record of shipping high volume commercial products and/or designing complex electromechanical assemblies in a research/prototype environment. Drive projects through early research and development and/or full development cycle, from early concept and prototyping through to validation and mass production, ensuring alignment with program strategy and execution.
Mechanical Engineer III IconmaMechanical Engineer IIISunnyvale, CA$68.65–$73.27 / hour6+ years of industry experience in mechanical design, with demonstrated track record of shipping high volume commercial products and/or designing complex electromechanical assemblies in a research/prototype environment. Drive projects through early research and development and/or full development cycle, from early concept and prototyping through to validation and mass production, ensuring alignment with program strategy and execution.
Mechanical Engineer, Edge Compute And Communications ANDURIL INDUSTRIESMechanical Engineer, Edge Compute And CommunicationsCosta Mesa, CA$146,000–$222,000 / yearTo ensure your safety and help you navigate your job search with confidence, please keep the following critical points in mind: No Financial Requests: Anduril will never solicit payment or demand personal financial details (such as banking information, credit card numbers, or social security numbers) at any stage of our hiring process. As the world enters an era of strategic competition, Anduril is committed to bringing cutting-edge autonomy, AI, computer vision, sensor fusion, and networking technology to the military in months, not years.
Mechanical Engineer - COPVs (All Levels) Impulse SpaceMechanical Engineer - COPVs (All Levels)Redondo Beach, CA$135,000–$215,000 / yearAs a Mechanical Engineer (COPVs) for our Vehicle Engineering Team, you will own all aspects of the design, analysis, build, test and integration of flight composite overwrapped pressure vessels – working with cross-functional engineering teams to accomplish this. This 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.
Senior Mechanical Engineer AircaptureSenior Mechanical EngineerBerkeley, CA$160,000–$180,000 / yearSpearhead the design engineering effort for our next generation DAC technology, advancing gas flow management, dynamic seals, nitrogen generation and purification collaborating closely with Mechanical Engineering and FEED teams. Design and develop mission critical subsystems of our DAC units optimizing them for leak rate, wear, reliability and cost, designing and testing various seal embodiments using in-house resources.
Mechanical Engineer - Integration & Test Figure AI IncMechanical Engineer - Integration & TestSan Jose, CA$120,000–$175,000 / yearWe are looking for a Mechanical Engineer to support the test infrastructure team to design, and build prototype hardware across our integration and test teams. Design and build test fixtures to validate robot hardware to real-world loading and failure conditions.
Mechanical Engineer Intern (Starting Summer 2027) The Dennis Group IncMechanical Engineer Intern (Starting Summer 2027)Carlsbad, CAOur mechanical team is involved with designing the mechanical systems, calculating space heat and cooling loads, determining and selecting equipment sizes, and vetting and selecting suitable vendors, suppliers, and sub-contractors. Dennis Group's Mechanical Engineers design and implement mechanical systems as part of a broad engineering and architectural team in designing and building food and beverage production facilities.
Mechanical Engineer, Components and Propulsion Anduril Industries IncMechanical Engineer, Components and PropulsionCosta Mesa, CA$129,000–$171,000 / yearIntegrate & Optimize for Production: Collaborate closely with Systems, Electrical, Software, and Manufacturing teams to ensure seamless integration of propulsion and mechanical components into larger platforms, optimizing designs for manufacturability, maintainability, and scalability. Design & Analyze Propulsion Systems: Lead the conceptualization, design, and detailed engineering of novel propulsion systems (e.g., electric, turbofan, rocket, hybrid) including engines, motors, pumps, and associated fluidic or thermal management components, ensuring optimal performance and efficiency.
Senior Mechanical Engineer, HVAC & Utilities The Dennis Group IncSenior Mechanical Engineer, HVAC & UtilitiesCarlsbad, CAOur mechanical team is involved with designing the mechanical systems, calculating space heat and cooling loads, determining and selecting equipment sizes, and vetting and selecting suitable vendors, suppliers, and sub-contractors. Dennis Group's Mechanical Engineers design and implement mechanical systems as part of a broad engineering and architectural team in designing and building food and beverage production facilities.
Senior Mechanical Engineer, Components and Propulsion Anduril Industries IncSenior Mechanical Engineer, Components and PropulsionCosta Mesa, CA$146,000–$194,000 / yearIntegrate & Optimize for Production: Collaborate closely with Systems, Electrical, Software, and Manufacturing teams to ensure seamless integration of propulsion and mechanical components into larger platforms, optimizing designs for manufacturability, maintainability, and scalability. Design & Analyze Propulsion Systems: Lead the conceptualization, design, and detailed engineering of novel propulsion systems (e.g., electric, turbofan, rocket, hybrid) including engines, motors, pumps, and associated fluidic or thermal management components, ensuring optimal performance and efficiency.