207 senior mechanical engineer jobs found in El Segundo, CA

Radiant is an El Segundo, CA-based startup building the world's first mass-produced, portable nuclear microreactors. The company's first reactor, Kaleidos, is a 1-megawatt failsafe microreactor that can be transported anywhere power is needed and run for up to five years without the need to refuel. 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. Radiant's unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-built microreactors that leverage existing, well-qualified materials. Founded in 2020, Radiant is on track to test its first reactor next year at the Idaho National Laboratory, with initial customer deliveries beginning in 2028. Senior Mechanical Engineer (Structures) Radiant is seeking a highly motivated Senior Mechanical Engineer to design and develop critical...

Radiant is an El Segundo, CA-based startup building the world's first mass-produced, portable nuclear microreactors. The company's first reactor, Kaleidos, is a 1-megawatt failsafe microreactor that can be transported anywhere power is needed and run for up to five years without the need to refuel. 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. Radiant's unique, practical approach to nuclear development utilizes modern software engineering to rapidly achieve safe, factory-built microreactors that leverage existing, well-qualified materials. Founded in 2020, Radiant is on track to test its first reactor next year at the Idaho National Laboratory, with initial customer deliveries beginning in 2028. Senior Mechanical Engineer (Sheet Metal Structures) Radiant is seeking a highly motivated Senior Mechanical Engineer to design and develop...

Who we are Neros is a defense technology company rebuilding America's drone industrial base. We design and manufacture high-performance unmanned systems that are tested in combat, iterated at startup speed, and built at massive scale. Our team culture is fast, hands-on, and obsessed with closing the gap between design and deployment. As drones transform the character of warfare, Neros is delivering the systems the West needs to compete on the modern battlefield and deter the adversaries of democracy. We're hiring engineers, operators, and builders who want to move fast, take on extreme ownership, and get capability into the hands of warfighters in months, not years. What you will be doing As a Senior Mechanical Engineer at Neros, you will own key components and subsystems within our products, starting from the conceptual design phase all the way through mass production. This is a dynamic and exciting role at a rapidly growing startup and presents an opportunity to be a...

Who We Are PAE is an engineering and design firm that turns complex challenges into reality. By leveraging the latest technologies, we solve problems in unique ways, and our designs enable buildings and communities to be more resilient and efficient. PAE is trusted by our clients in every aspect of a project's lifespan, from idea to occupancy. We set ambitious goals backed by analysis to significantly conserve water and energy while balancing costs and long-term operational needs. As a B Corp, we measure success by the benefits our projects provide to our clients, our communities, and our planet. We embrace innovation, transparency, sustainability, and lifelong curiosity. PAE is looking for a Senior Mechanical Engineer - Project Manager to lead complex healthcare facility projects. In this role, you will oversee design and delivery of critical HVAC and building systems for hospitals and clinical environments, ensuring compliance with healthcare codes and standards such as...

Spacecraft represent the most pressing unmet need across the entire aerospace industry. As more launch vehicles come online and the cost to orbit decreases, more companies launching payloads to space continue to emerge. 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. These buses hold the payloads of our customers and are flown on launch vehicles. Apex manufactures these satellite buses at scale using a combination of software, vertical integration, and hardware that is designed for manufacturing. Our spacecraft enable the future of society: ranging from earth observation to communications and more. We'd love for you to join us on our mission of providing humankind access to the galaxy beyond our planet. About the Role Apex is looking for a Senior Mechanical Engineer - Ground Systems (MGSE) to join our team and help...

At Vast, our mission is to contribute to a future where billions of people are living and thriving in space. We are building artificial gravity space stations, allowing long-term stays in space without the adverse effects of zero-gravity. Our initial crewed space habitat will be Haven-1, scheduled to be the world's first commercial space station when it launches into low earth orbit in May 2026. Our team is all-in , committed to executing our mission safely and on time. If you want to work with the most talented people on Earth furthering space exploration for humanity, come join us. Vast is looking for a Senior Mechanical Engineer, Structures , reporting to the Manager, Structures Design , to support the development of the systems that will be required for the design and build of artificial-gravity human-rated space stations. The Structures and Dynamics team covers a wide range of components and responsibilities: from the primary pressure hull, to MMOD shielding, engineered...

Job Summary: The Senior Mechanical Engineer is responsible for the overall evaluation, design, research, building, testing, and improving of mechanical and electrical systems. Responsibilities include using CAD software and other technical tools and processes to produce detailed designs, collaborating with other professionals and functions to ensure designs are successful, and ensuring all projects remain within budgetary and time constraints. Duties and Responsibilities: Collaborate with clients and other team members to determine project scope. Collaborate with internal teams to create design sketches, layouts, and plans. Use computer-assisted design (CAD) software to create preliminary and detailed drawings of the product. Study the test data and make comparisons with similar designs. Perform building system analysis and design. Apply mechanical engineering theory and adhere to codes. Address conditions and challenges encountered at job sites. Ensure plans and...

Harris Group thrives on providing expert engineering for some of today's most complex challenges. We are creative in our approach by delivering multi-discipline services across a wide range of project types. Our successes are directly related to high-quality collaboration, across all offices, expertise, and backgrounds. Harris Group is a 100% Employee-Owned company with our eyes focused on the people in the company, the clients we serve, and the communities in which we live. Harris Group is looking for a Senior Mechanical Engineer to be based in our Thousand Oaks, CA office. This role is responsible for providing professional engineering expertise to our projects that seek to positively impact both the community and the environment. The incumbent will work on innovative designs and see diverse projects through development, detailed design, commissioning, and construction support. What We Can Offer You Variety of project types: Life Science, Industrial Manufacturing, Biofuels,...

Design West Technologies Inc. is a leading provider of cutting-edge aerospace and military technologies. With a commitment to excellence and innovation, we specialize in designing, manufacturing, and delivering high-performance solutions for our clients worldwide. Our team comprises passionate professionals dedicated to pushing the boundaries of what is possible in aerospace and defense. Position Overview: We have an exciting opportunity for a Senior Mechanical Engineer to join our DWT Research team located in Tustin, California. We are looking for someone with drive, talent, and experience in new product development. The successful candidate will report to the Engineering Program Manager of our DWT Research division and be responsible for creating and validating mechanical designs, to support business operations and customer activities. Key Job Duties: • Assess Technical Data Package (TDP) to formulate design, validation and production strategy. • Develop and maintain...

At Turion Space, we're building spacecraft to secure Earth and expand humanity's reach beyond it. As part of our Mechanical Engineering team, you'll help design and build the satellites and mechanisms that make our missions possible. As a Senior Mechanical Engineer , you'll work across the full development lifecycle from early concept and detailed design through analysis, fabrication, integration, and testing. You'll collaborate closely with a multidisciplinary team to deliver flight hardware that is robust, reliable, and ready for space. This role is on site at our Irvine, CA HQ. Key Responsibilities Design metallic structures and propulsion fluid systems under accelerated timelines Review specifications and other engineering data to develop mechanical systems Update designs and drawings through engineering change orders to support our rapid pace of design iteration Create detailed component and assembly drawings incorporating an understanding of GD&T and...

Overview Keysight is on the forefront of technology innovation, delivering breakthroughs and trusted insights in electronic design, simulation, prototyping, test, manufacturing, and optimization. Our ~15,000 employees create world-class solutions in communications, 5G, automotive, energy, quantum, aerospace, defense, and semiconductor markets for customers in over 100 countries. Learn more about what we do. Our award-winning culture embraces a bold vision of where technology can take us and a passion for tackling challenging problems with industry-first solutions. We believe that when people feel a sense of belonging, they can be more creative, innovative, and thrive at all points in their careers. Responsibilities Mechanical and system development from concept to production. Perform design and necessary analysis, develop and execute validation test plans. Collaborate with cross-functional teams (eg, development, product management, inside and outside manufacturing)....

Job Description General Job Description: This position is responsible for independently delivering engineering services, from conceptual design through construction completion. Essential Duties & Responsibilities Expert in project planning, coordination, and execution Independently complete conceptual design through construction drawing development for large complex project or multiple projects simultaneously Create conceptual designs certified to Building Codes, Energy Codes, and LEED standards Responsible for calculations, design and layout of equipment, duct and piping systems on assigned projects Appropriate engagement of engineering applications and/or managers in project decisions Extensive experience in applications engineering including psychrometrics, refrigeration, acoustics, and controls systems Proactively communicate and coordinate project designs with Project Management, Construction and Service departments, Controls, and other trade...

At Heart Aerospace we develop the ES-30, a regional hybrid-electric airplane with a capacity of 30 passengers, an electric zero-emission range of 200 km and an extended hybrid range of 400 km. Heart is targeting type certification of the ES-30 by the end of the decade. Your mission As part of the Mechanisms team, you will be responsible for design, development, validation, and eventually certification of components including primary and secondary flight control actuators, propulsion and landing gear components, and environmental control (ECS) components. You will work with electrical, software, and mechanical engineers across teams to build and fly complex systems. Key responsibilities include but are not limited The opportunity to exercise full ownership over the design, fabrication and test of novel flight components. You will lead the design of crucial subcomponents including gears, bearings, seals. Design, build and test components to environmental qualification...

At Heart Aerospace we develop the ES-30, a regional hybrid-electric airplane with a capacity of 30 passengers, an electric zero-emission range of 200 km and an extended hybrid range of 400 km. Heart is targeting type certification of the ES-30 by the end of the decade. Your mission Heart Aerospace is seeking a highly motivated and experienced Battery Design Engineer to join our growing and dynamic team. In this role, you will be a key contributor to the design, development, testing, and optimization of advanced battery systems specifically designed for the demanding requirements of electric aerospace applications. You will leverage your deep understanding of design methodologies and approaches to drive innovation and ensure the highest levels of performance, safety and reliability. You will translate system-level requirements into robust, certifiable mechanical designs, playing a critical role in electrifying the future of flight. Key responsibilities include but are not...

At Heart Aerospace we develop the ES-30, a regional hybrid-electric airplane with a capacity of 30 passengers, an electric zero-emission range of 200 km and an extended hybrid range of 400 km. Heart is targeting type certification of the ES-30 by the end of the decade. Your mission Heart is building a hybrid, battery-electric regional aircraft to decarbonize and democratize aviation. The aircraft fuselage, wing and empennage are composite and designed in-house, with aluminum substructure and fittings. As a Staff Mechanical Design Engineer on the structures team, you will be given ownership for the hardware product lifecycle of the airframe. You will be responsible for the design, analysis, and oversight of manufacturing and validation of primary structure. In order to be successful in this role, you must be someone who is self-motivated, adaptable and is able to lead your own projects to completion in a fast-paced environment. Ideally, you have significant mechanical or...

ABOUT ROCKET LAB Rocket Lab is an end-to-end space company delivering responsive launch services, complete spacecraft design and manufacturing, payloads, satellite components, and more - all with the goal of opening access space. The rockets and satellites we build, and launch enable some of the most ambitious and vital space missions globally, supporting scientific exploration, Earth observation and missions to combat climate change, national security, and exciting new technology demonstrations. Our Electron rocket has become the second most frequently launched U.S. rocket annually and has delivered more than 230 satellites to orbit, all while we work to develop Neutron, our upcoming medium-lift, reusable launch vehicle for larger constellation deployment. 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...

About Us We are seeking a highly skilled and experienced Systems Engineer / Sr. Opto-Mechanical Engineer for ChromoLogic LLC (www.chromologic.com), a world-class innovation center with active scientific research and development in the medical, aerospace and security markets. The candidate we seek will support engineering programs at ChromoLogic and Covisus Inc. (www.covisus.com). Covisus is a VC-funded spin-off from ChromoLogic that has developed an award-winning and industry-leading technology for tagless tracking of assets based on its vTag® technology. The successful candidate will spearhead the development and implementation of cutting-edge opto-mechanical systems on current and upcoming programs as well as serve as Project/Product Manager on select assets. Key Responsibilities Hands-on opto-mechanical design, development and integration of optical/opto-mechanical systems to market-specific applications Communication and interface to program leadership, vendors and...

ATC Automation is seeking a hands-on and innovative Senior Mechanical Design Engineer to lead the mechanical development of custom automation machinery and tooling systems at our Simi Valley, CA location. Remote opportunities may be considered for highly qualified candidates, with occasional travel required to Simi Valley. Projects range in scale and complexity, from rapid R&D initiatives to fully integrated, high-throughput production equipment. You will work directly with customers to define requirements and collaborate with a multidisciplinary engineering team to deliver robust, high-performance automation solutions. With a competitive salary ranging from $120,000 to $140,000, this role rewards your expertise while encouraging both personal and professional growth. ATC Automation offers a comprehensive benefits package, including Medical, Dental, Vision, 401(k), Life Insurance, Health Savings Account, Flexible Spending Account, and Paid Time Off. If you are passionate...

About Rivian Rivian is on a mission to keep the world adventurous forever. This goes for the emissions-free Electric Adventure Vehicles we build, and the curious, courageous souls we seek to attract. As a company, we constantly challenge what's possible, never simply accepting what has always been done. We reframe old problems, seek new solutions and operate comfortably in areas that are unknown. Our backgrounds are diverse, but our team shares a love of the outdoors and a desire to protect it for future generations. Role Summary The Senior Cost Engineer, Cost Engineering will play a pivotal role in the Rivian Cost Engineering organization, as a part of our team of Cost Engineers in Irvine, California. The role will be responsible for completion of cost models that accurately analyze the costs associated with components across Rivian vehicles. Your expertise in cost estimation will be crucial in guiding our design and procurement, ensuring competitiveness in the market,...