Top Mechanical Engineering Jobs in Los Angeles, CA

Designs, analyzes, integrates, and qualifies precision optomechanical assemblies and optical payloads for space and airborne platforms. Responsibilities include optomechanical architecture, STOP analysis, tolerance analysis, GD&T, FEA, alignment, metrology, environmental testing, manufacturing documentation, vendor coordination, and technical leadership. The role owns designs from concept through flight hardware and requires hands-on integration, testing, cross-functional collaboration, and mentorship.

Lead mechanical design and development of spacecraft structures, mechanisms, and assemblies from concept through flight delivery. Perform CAD modeling, define GD&T, integrate avionics and propulsion, lead design reviews, develop test plans, and mentor junior engineers to ensure launch- and on-orbit-qualified hardware.

The Mechanical Engineer will design, test, and qualify spacecraft components, owning the hardware lifecycle from concept through testing and analysis.

Develop and optimize production processes for spacecraft mechanical structures, ensuring efficient manufacturing and integration while collaborating with engineering teams.

Leads qualification and acceptance testing for satellite components and systems. Designs mechanical test setups, fixtures, instrumentation, and data acquisition systems; analyzes test data; produces reports; troubleshoots technical issues; collaborates with design and systems engineers; improves test processes; and mentors junior engineers and technicians.

Supports the design, assembly, maintenance, and execution of mechanical qualification and acceptance test setups for satellite components and spacecraft. Performs hands-on instrumentation and data acquisition work, documents test procedures and results, troubleshoots testing issues, and ensures compliance with safety and quality standards under senior engineer guidance.

The Senior Mechanical Engineer will lead the design and analysis of structural components for spacecraft, handle high-fidelity analysis, create manufacturing drawings, oversee testing campaigns, and mentor junior engineers.

Design and validate thermofluids systems for large-scale AI data center cooling. Responsibilities include developing cycle models, selecting working fluids, designing heat exchangers and piping, sizing valves and relief systems, analyzing coupled thermal and fluid trades, and validating predictions against test-stand data. The role requires rigorous model calibration, honest reporting of discrepancies, and technical analysis that drives machine design decisions.

Design and own mechanical hardware and mechanisms from concept through production, integration, testing, and launch. Responsibilities include developing requirements, optimizing system designs, applying design for manufacturing, reducing production complexity, conducting environmental and performance testing, and managing product delivery timelines. The role collaborates across engineering and production teams to support Starshield missions and may involve classified programs.

Design, analyze, test, and implement pressure components and fluid system hardware for a launch vehicle. Perform detailed fluid, thermal, and structural analyses, lead qualification test planning and execution, and conduct trade studies to meet system requirements. Collaborate across teams and support production and flight integration.

Designs, integrates, analyzes, manufactures, and tests payload hardware and supporting spacecraft structures. Responsibilities include creating CAD models and engineering drawings, managing mechanical interfaces, performing structural analysis, selecting materials and manufacturing processes, supporting assembly and environmental testing, troubleshooting hardware issues, and maintaining technical documentation. The role collaborates with payload, structures, thermal, avionics, manufacturing, suppliers, and systems engineering teams throughout the spacecraft development lifecycle.

Design, analyze, and integrate mechanical and thermal systems for high-power hybrid-electric propulsion. Lead rotating machinery development, CAD and drawing creation, tolerance analysis, DFM/DFA, prototype assembly, testing, troubleshooting, root cause analysis, and design improvements. Collaborate with electrical, manufacturing, supplier, test, and flight teams while mentoring engineers and contributing to technical standards and propulsion strategy.

Lead supplier development for machined parts: audit and improve supplier processes, perform on-site quality investigations, support NPI, provide technical guidance on specifications and manufacturing, monitor supplier performance, and mitigate supply chain risks to enable scalable aerospace production.

Design and develop tooling and MGSE for spacecraft, including assembly fixtures and handling systems, while providing mentorship to junior engineers.

Develop mechanical designs for opto-electronic devices using CREO and AutoCAD. Perform thermal, thermo-mechanical, and mechanical FEA in ANSYS, conduct FMEAs and tolerance analyses, and manage part revisions. Collaborate with design, manufacturing, quality, and vendors to validate specifications, improve manufacturability, and address complex engineering challenges in an in-person telecommunications technology environment.

Develop thermal-hydraulic models for scientific apparatus using ASME B31.3-2022 for installation at a research reactor. Perform steady-state and transient temperature modeling, work independently, and coordinate with EPC contractors and vendors on costs and budgets. The role is remote, part-time, and temporary, with at least four required site visits to State College, Pennsylvania. U.S. citizenship, background screening, drug-free status, and references are required.

Creates and checks complex 3D models, assemblies, drawings, tooling, BOMs, and model-based definitions using CATIA V5 and 3DX. Applies manufacturing knowledge, GD&T, tolerance analysis, interference checks, and installation assessments to aerospace ducting components. Coordinates designs with project and manufacturing engineers, supports shops, customers, and vendors, and performs engineering changes, weight calculations, and design reviews. Mentors junior employees as needed while maintaining compliance with safety and company procedures.

Supports manufacturing engineering projects involving industrial equipment, utility systems, piping, and conveying systems. Responsibilities include equipment specification, supplier evaluation and management, purchasing documentation, quotation review, price negotiation, project scheduling, logistics, startup coordination, and AutoCAD-based equipment and piping layout design. The role works with plant, headquarters, and vendor personnel to ensure equipment quality and performance.

Designs and analyzes mechanical payloads and assemblies using MBSE, CAD, thermal and structural FEA. Responsibilities include material selection, environmental ruggedization, payload integration, manufacturing documentation with GD&T, and support for vibration, thermal, and environmental testing. The role also contributes to system safety, requirements definition, reverse engineering, and system-level integration for defense programs.

Supports mechanical engineering teams with basic MEP designs, CAD/BIM drafting, design coordination, system upgrades, field investigations, construction site visits, and project documentation. Participates in technical training and professional development through the Engineer Development Training program.

Design and develop spacecraft mechanical systems for satellites and on-orbit vehicles. Assist in structural analysis, prototyping, and integration tasks, ensuring designs meet performance and reliability standards.

Lead process engineering design and execution for mining, mineral processing, material handling, and heavy industrial facilities. Develop PFDs, P&IDs, calculations, specifications, and equipment designs; coordinate multidisciplinary teams; oversee quality, safety, commissioning, and client expectations. Support proposals, business development, client relationships, conferences, and project pursuits. Mentor engineers and establish engineering standards and best practices. Regular travel to offices, project sites, and industrial facilities is expected.

Designs and develops pharmaceutical drug-delivery devices and platforms using CAD, prototyping, testing, tolerance analysis, and Design for Manufacturing principles. Collaborates with internal teams, external consultants, CROs, and manufacturing partners to troubleshoot products, support design controls, build intellectual property, and transfer devices into production. Manages project budgets and timelines while serving as a technical resource for cross-functional teams.

Manage satellite integration builds and test operations, evaluate designs for manufacturability, develop assembly procedures, optimize manufacturing with engineers and technicians, and investigate non-conformances. The role requires hands-on vehicle integration, testing, documentation, and go/no-go decisions across propulsion, thermal, electrical, structural, and avionics systems. Some travel, extended hours, physical work, and potential classified mission support may be required.

Supports mechanical design and analysis of aerospace and spacecraft hardware through concept development, requirements definition, CAD, simulation, manufacturing, testing, qualification, and in-orbit support. Responsibilities may include electronics packaging, thermal management, shock and vibration analysis, FEA, GD&T, EMI/EMC mitigation, CNC manufacturing, cost analysis, and design reviews.