139 aerospace and defense jobs found in Irvine, CA

Responsibilities: Develop and optimize systems involving lenses, sensors, or imaging devices Conduct optical system modeling, simulation, and performance analysis using tools such as Zemax, Code V, FRED, or similar optical analysis software. Develop and execute optical test plans to validate system performance at component, subsystem, and payload levels. Design and implement optical test setups including alignment tools, calibration methods, and metrology procedures. Define optical acceptance criteria and support verification activities for payload integration and end-of-line testing. Support manufacturing and assembly processes involving optics, including defining handling procedures, contamination control, and alignment processes. Analyze test data and troubleshoot optical performance issues during development, integration, and production. Support root-cause investigations for optical performance deviations and recommend corrective actions. Conduct research on new...

TRL11 is seeking a hands-on Senior Mechanical Engineer to own the mechanical development of space avionics and electro-optical imaging systems from initial requirements through production and product sustainment. This role will have broad responsibility across the full product lifecycle, including requirements definition and verification, mechanical architecture, detailed design, drawing release, supplier selection, manufacturing engineering, environmental testing, and ongoing product support. The Senior Mechanical Engineer will work closely with cross-functional teams and customers to deliver reliable hardware for demanding space environments. The ideal candidate is a strong individual contributor who is comfortable making technical decisions, working directly with vendors, technicians, and customers, and remaining accountable for a product after the initial design is released. Key Responsibilities Own the mechanical development and sustainment of space avionics and...

TRL11 is a startup based in Irvine, CA developing novel video and imaging systems for spacecraft, enabling visual intelligence from the final frontier. TRL11 is looking for an engineer with experience in finite element analysis (FEA). This role will support primarily thermal but also structural and optical simulation, contribute to test plans and test execution, support systems engineering, and develop TRL11's end to end simulation capabilities. This role is an opportunity to have a large influence on TRL11's simulation practices, and is well suited to someone who is eager to dive in and contribute from day one. Responsibilities Develop and maintain high-fidelity finite element models for both iterative design analysis and final verification sign-off Perform thermal analyses for on-orbit environments including solar loading, radiation, and internal heat dissipation Perform structural analyses for launch environments including quasi-static loads, vibration, and shock Execute...

Woodward is committed to creating a great workplace for all team members. Our company and its members are committed to acting with integrity, being respectful and accountable to one another, and staying humble and driven, while maintaining the highest professional and ethical standards. We are steadfastly committed to attracting the best talent across our communities creating a rewarding workplace. Together we are fulfilling our purpose to design and deliver energy control solutions our partners count on to power a clean future. Woodward supports our members' wellbeing and regularly benchmarks with other companies in our industry to offer an extensive Total Reward package for this position. Salary will be determined by the applicant's education, experience, knowledge, skills, and abilities, as well as internal equity and alignment with market data. CA Only: Staff: Estimated annual base pay: $125,000 (minimum) - $162,500 (midpoint) - $200,000 (maximum) Senior Staff:...

POSITION SUMMARY As an Engineering Die Technician, you will work closely with engineers and other technical staff to provide support in die maintenance and inspection. Your primary responsibilities will involve hands-on work with engineering tools, equipment, and processes, as well as collecting and analyzing data to support engineering projects and research initiatives. This is an excellent opportunity for individuals looking to gain practical experience in the field of engineering while working in a collaborative and dynamic environment. The ideal candidate will have strong attention to detail and be able to perform tasks under their own guidance. POSITION ESSENTIAL FUNCTIONS INCLUDE BUT ARE NOT LIMITED TO: Die inspection: Visual inspection of tooling as well as operating 3D scanning equipment. Accountability: Ownership of the die inspection process and be the primary resource related to tooling condition and status. Communicate tooling status to technical and...

Design West Technologies Inc. of Tustin, CA has an immediate need for a Mechanical-Engineering Intern for late Summer/early Fall 2026. The successful candidate will be responsible for providing support to R&D projects for the Department of Defense. In this role, you will work with R&D, engineering, manufacturing, procurement and planning departments. If this sounds like the opportunity for you, apply today! A DAY IN THE LIFE AS AN MECHANICAL ENGINEERING INTERN AT DWT The Mechanical Engineering Intern will participate in R&D development and testing chem-bio-rad-nuclear (CBRN) and weapon systems and components, support drawing and documentation updates, support proposal activities, develop 3D models of parts or fixtures using SolidWorks, document machine set up processes and recommend improvements. QUALIFICATIONS: Pursuing or recent graduate B.S. degree in mechanical, aerospace or similar engineering discipline Motivated to learn and work in a team...

Attalon is a U.S.-based aerospace and defense technology company created in 2025 when Advent International carved out Coherent's Aerospace & Defense division. Attalon develops and produces mission-critical optical systems, precision coatings, and advanced laser subsystems used in ISR&T, space, missile, and directed-energy applications. Principal Opto-Mechanical Design Engineer Conceive and develop optical, mechanical, and opto-mechanical system and subsystem layouts. Create highly complex designs, collaborate with cross-functional partners to ensure optimal system performance, and deliver fast, efficient opto-mechanical concepts using 3D solid-modeling tools aligned with customer requirements. Provide support to Engineering, Program Management, and Operations through the design and development of models used for analysis, prototyping, production, and mechanical manufacturing activities as assigned. Responsibilities • Design intricate opto-mechanical components and...

About the Organization Applied Aerospace & Defense (Applied) is a premier provider of advanced design, engineering, and vertically integrated manufacturing solutions for leading and next-generation space and defense technology companies. Applied builds complex hardware for extreme operating environments and is focused on three core markets: Space and Launch Systems, Defense Aviation and Airborne Systems, and C5ISR and Precision Strike Systems. With decades of space and defense manufacturing heritage, Applied combines deep material science and IP-enabled process expertise with the ability to enable rapid prototyping, enhance new product development, and responsively scale production. Across its nationwide infrastructure of advanced manufacturing facilities, Applied continuously supports a balanced mix of next-generation technology and platform development, large scale production programs, and aftermarket sustainment for enduring platforms. EOE Statement Applied Aerospace...

Bal Seal Engineering is seeking a hands-on Manufacturing Engineer II who will be responsible for actively supporting day-to-day production by resolving manufacturing issues, reviewing Bills of Materials (BOMs), routers, costing, Engineering Change Orders (ECOs), and Engineering Orders (EOs). This position is responsible for implementing process improvements and sustaining manufacturing initiatives, including the design and development of fixtures, jigs, tooling, and manual manufacturing processes. The Manufacturing Engineer II will support the maintenance, specification, validation, installation, and continuous improvement of manufacturing equipment while partnering closely with Engineering, Operations, and Production to improve safety, quality, efficiency, and productivity. The ideal candidate is mechanically and electrically (preferred) inclined, enjoys troubleshooting manufacturing equipment, and takes a hands-on approach to solving production challenges. About Bal Seal:...

At Winchester Interconnect, we always do the right thing, the right way. Winchester Interconnect is committed to inspiring the most innovative teams. We foster a dynamic, inclusive environment that thrives on collaboration and continuous growth. We hire exceptional people, celebrate wins, empower employee growth, and provide opportunities to thrive. Winchester is where potential transforms into purpose, and every team member plays a vital role in shaping our shared success. Position Summary: As our Senior Manufacturing & Process Engineer , you will act as a pivotal bridge between our technical engineering operations and our key client stakeholders. You will be responsible for evaluating, optimizing, and scaling manufacturing processes to improve production efficiency, product quality, and cost savings in a high-mix, low-volume aerospace and defense manufacturing environment. As a senior team member, you will leverage extensive process engineering expertise to solve...

About Mach Industries Founded in 2022, Mach Industries is a rapidly growing defense technology company focused on developing next-generation autonomous defense platforms . At the core of our mission is the commitment to delivering scalable, decentralized defense systems that enhance the strategic capabilities of the United States and its allies. With a workforce of approximately 350 employees , we operate with startup agility and ambition. Our vision is to redefine the future of warfare through cutting-edge manufacturing, innovation at speed, and unwavering focus on national security. We are dedicated to solving the next generation of warfare with lethal systems that deter kinetic conflict and protect global security. The Role As a Build Reliability Engineer at Mach Industries, you will own quality and reliability for one or more of our aircraft systems. You'll partner closely with Build Engineers (on prototypes and first articles), Manufacturing Engineers (on...

About Mach Industries Founded in 2022, Mach Industries is a rapidly growing defense technology company focused on developing next-generation autonomous defense platforms . At the core of our mission is the commitment to delivering scalable, decentralized defense systems that enhance the strategic capabilities of the United States and its allies. With a workforce of approximately 350 employees , we operate with startup agility and ambition. Our vision is to redefine the future of warfare through cutting-edge manufacturing, innovation at speed, and unwavering focus on national security. We are dedicated to solving the next generation of warfare with lethal systems that deter kinetic conflict and protect global security. The Role Mach Industries is seeking a Senior Vehicle Design Engineer - Advanced Concepts to support the development of next-generation missile and low-observable aerospace systems. In this role, you will apply deep vehicle design expertise to...

About Mach Industries Founded in 2022, Mach Industries is a rapidly growing defense technology company focused on developing next-generation autonomous defense platforms . At the core of our mission is the commitment to delivering scalable, decentralized defense systems that enhance the strategic capabilities of the United States and its allies. With a workforce of approximately 350 employees , we operate with startup agility and ambition. Our vision is to redefine the future of warfare through cutting-edge manufacturing, innovation at speed, and unwavering focus on national security. We are dedicated to solving the next generation of warfare with lethal systems that deter kinetic conflict and protect global security. The Role Mach Industries is seeking an Air Vehicle Design Engineer to develop the overall design of next-generation unmanned aircraft and missile systems from initial concept through detailed CAD definition. In this role, you'll perform first-order...

About Mach Industries Founded in 2022, Mach Industries is a rapidly growing defense technology company focused on developing next-generation autonomous defense platforms . At the core of our mission is the commitment to delivering scalable, decentralized defense systems that enhance the strategic capabilities of the United States and its allies. With a workforce of approximately 350 employees , we operate with startup agility and ambition. Our vision is to redefine the future of warfare through cutting-edge manufacturing, innovation at speed, and unwavering focus on national security. We are dedicated to solving the next generation of warfare with lethal systems that deter kinetic conflict and protect global security. Key Responsibilities Design and develop avionics mounting architectures, including shock and vibration isolation, structural load paths, serviceability, and connector access. Own avionics enclosure and electronics packaging design with a strong...

About Mach Industries Founded in 2022, Mach Industries is a rapidly growing defense technology company focused on developing next-generation autonomous defense platforms . At the core of our mission is the commitment to delivering scalable, decentralized defense systems that enhance the strategic capabilities of the United States and its allies. With a workforce of approximately 350 employees , we operate with startup agility and ambition. Our vision is to redefine the future of warfare through cutting-edge manufacturing, innovation at speed, and unwavering focus on national security. We are dedicated to solving the next generation of warfare with lethal systems that deter kinetic conflict and protect global security. The Role Mach Industries is seeking a Conceptual Design Engineer to develop and mature next-generation unmanned aircraft and missile concepts from mission requirements through preliminary design. In this role, you will define vehicle architectures,...

About Mach Industries Founded in 2022, Mach Industries is a rapidly growing defense technology company focused on developing next-generation autonomous defense platforms . At the core of our mission is the commitment to delivering scalable, decentralized defense systems that enhance the strategic capabilities of the United States and its allies. With a workforce of approximately 350 employees , we operate with startup agility and ambition. Our vision is to redefine the future of warfare through cutting-edge manufacturing, innovation at speed, and unwavering focus on national security. We are dedicated to solving the next generation of warfare with lethal systems that deter kinetic conflict and protect global security. The Role We're looking for a Senior Test Integration Engineer to own electrical interconnect systems across our UAV platforms. This is a highly hands-on role focused on designing, building, and validating harnesses that operate in demanding...

About Mach Industries Founded in 2022, Mach Industries is a rapidly growing defense technology company focused on developing next-generation autonomous defense platforms . At the core of our mission is the commitment to delivering scalable, decentralized defense systems that enhance the strategic capabilities of the United States and its allies. With a workforce of approximately 220 employees , we operate with startup agility and ambition. Our vision is to redefine the future of warfare through cutting-edge manufacturing, innovation at speed, and unwavering focus on national security. We are dedicated to solving the next generation of warfare with lethal systems that deter kinetic conflict and protect global security. The Role Mach Industries is seeking a Build Engineer to own the transformation of our products from new designs to reality. In this role, you will work closely with the Product Engineering and Manufacturing teams to build first articles, enable...

About Mach Industries Founded in 2022, Mach Industries is a rapidly growing defense technology company focused on developing next-generation autonomous defense platforms . At the core of our mission is the commitment to delivering scalable, decentralized defense systems that enhance the strategic capabilities of the United States and its allies. With a workforce of approximately 220 employees , we operate with startup agility and ambition. Our vision is to redefine the future of warfare through cutting-edge manufacturing, innovation at speed, and unwavering focus on national security. We are dedicated to solving the next generation of warfare with lethal systems that deter kinetic conflict and protect global security. The Role Mach Industries is seeking a Manufacturing Engineer to own the industrialization of our products for high-rate production. In this role, you will work closely with the Product Engineering and Manufacturing teams to develop processes,...

Applied Composites (AC) is seeking a Manufacturing Engineer 4 with Tool and Die Design Composite Background, who serves as a senior technical leader and subject matter expert in composite tool design, manufacturing processes, production systems, and new product introduction and design across multiple programs and functional organizations. About AC: Come and join the Applied Composites team. We are a leading provider of complex composite components, assemblies, engineering, and tooling to the aerospace, defense, and space system markets. Our employees are treated with respect and given the support, knowledge, and resources they need to thrive. If you are looking for a company that values and develops its employees while offering engaging work, Applied Composites may be the place for you. Job Accountabilities Technical Leadership Serve as the technical authority for composite manufacturing processes matrix, tool and die design, equipment modification, and processing...

Job Description Acts as a key contributor to the Manufacturing Engineering team and supports various complex activities to increase manufacturing capabilities. Actively participates in introducing new products to the manufacturing and supply chain environment. Directly impacts all aspects of safety, quality, delivery, cost, and innovation, as well as operations' sustaining and growth efforts. Responsible for developing and implementing manufacturing processes and procedures for fabrication, machining, and assembly of space-flight composite hardware. Works collaboratively with all levels of personnel, including Program Managers, Supervisors, Technicians, and Inspectors, to ensure the efficient fulfillment of product and delivery commitments. Read and interpret Engineering Drawings to create the Product Indentured Bill-of-Material. Consult with Shop Supervisors to develop accurate schedule durations for each component of the build cycle. Review Engineering Specifications to...