Top Mechanical Design Engineer Jobs in San Francisco Bay Area, CA

Lead mechanical design of battery and power electronics hardware from requirements through production. Design enclosures, busbars, and power distribution components; perform structural, thermal, vibration, EMI analyses; create production CAD, drawings, and GD&T; plan and execute environmental and reliability testing; qualify suppliers and support manufacturing handoff; mentor engineers and provide cross-functional technical leadership.

Design, prototype, and iterate mechanical subsystems from concept to working hardware. Use CAD, perform hand calculations and FEA as needed, select materials and tolerances, build prototypes with 3D printing and CNC, and integrate mechanical designs with electronics, motors, sensors, and control systems in an on-site San Francisco environment.

Design, prototype, and scale durable robots: create parts and assemblies in Onshape, build and test prototypes, ensure serviceability/safety, produce engineering drawings, source parts with suppliers, and design qualification and end-of-line tests while supporting production.

Collaborate on mechanical designs for data center systems, validating performance, overseeing construction, and ensuring designs meet quality benchmarks.

The Mechanical Design Engineer will lead sustaining engineering, develop next-gen products, manage prototyping, create CAD models, and document designs.

Lead mechanical engineering evaluations for data center opportunities, assessing HVAC, cooling, chiller, CRAH/CRAC, liquid cooling, and critical equipment systems. Conduct facility due diligence, validate capacity and design assumptions, evaluate vendors and deployment risks, and provide feasibility and Go/No-Go recommendations. Support mechanical design strategies, equipment selection, commissioning, and construction readiness while partnering with engineering teams, consultants, and vendors to establish scalable standards for hyperscale and AI infrastructure.

Lead design and analysis of precision electro-mechanical subsystems for a metal 3D printer, produce parts and assemblies, manage BOM/revision control and sourcing, perform rapid prototyping and metrology-based testing, maintain machine tools, and collaborate across mechanical, electrical, materials, and software teams to move designs into manufacturing.

Design, prototype, and build nanometer-scale mechanical systems for semiconductor fabrication. Lead system integration, tolerance and error budgeting, select precision components, and rapidly iterate designs through hands-on prototyping and metrology.

Lead structural design for utility-scale battery enclosures, using FEA (Ansys) and hand calculations to optimize for performance, weatherproofing, manufacturability, and cost. Drive design-to-production for sheet metal and weldment assemblies, validate via test correlation, present findings, and perform failure root-cause analysis.

Responsible for designing and developing vehicle body structures for an autonomous ATV, ensuring performance across extreme conditions using CAD and FEA tools, and collaborating with team members on integrated vehicle architectures.

Lead structural analysis using Ansys FEA and hand calculations for utility-scale energy storage hardware. Define analysis methodology and pass/fail criteria, create calculation tools, validate designs through testing and FEA correlation, perform failure root-cause analysis, and collaborate with designers to optimize for manufacturability, cost, weight, and reliability.

Lead propulsion hardware design from concept through flight qualification and integration. Perform design trade studies, detailed CAD design, structural/thermal/fluid analyses, prototype assembly and tooling, test hardware, analyze data, diagnose issues, and present design reviews.

The Mechanical Design Engineer will lead the design and development of energy storage products, manage a team, and ensure integration with other engineering disciplines.

Design, build, and activate low-volume custom industrial machinery. Create detailed CAD models and prints, perform structural sizing and hand calculations, support fabrication, testing, and production activation, and collaborate with controls and production engineering to maximize equipment reliability and production rates.

Lead high-visibility R&D projects as a Mechanical Design Engineer, overseeing reactor system design, development, and manufacturing processes while troubleshooting existing designs.