Top Mechanical Engineering Jobs in San Francisco Bay Area, CA

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.

Designs, builds, and owns mechanical infrastructure for robotic actuator dynamometer and test cells. Responsibilities include mechanical architecture, fixtures, couplings, shafts, bearings, guarding, alignment, analysis, fabrication, assembly, commissioning, and lab debugging. The role partners with electrical, software, and controls engineers; manages vendors; develops drawings, tolerances, inspection plans, safety systems, and maintenance practices; and improves test reliability through observation and failure analysis.

Lead mechanical development of a clinical prototype for a smart microinvasive cancer-treatment needle. Responsibilities include precision mechanical design, fabrication, testing, system integration, manufacturing partner selection, inspection, and product development leadership. The role integrates MEMS electronics, microfluidics, ultrasound physics, and high-tolerance components, while balancing clinical and engineering requirements and collaborating with clinicians and company founders.

Designs and validates stator and rotor mechanical components for advanced robotic motors. Responsibilities include CAD and drawing release, tolerance analysis, lamination and bobbin development, fixture design, prototype fabrication and troubleshooting, metrology, winding interface development, and establishing repeatable low-volume build processes with work instructions and inspection standards. Partners with electromagnetic, electrical, manufacturing, and test engineers to optimize performance, manufacturability, and reliability.

Designs and tests robotic hardware from overall system architecture through detailed components and assemblies. Responsibilities include developing concepts, defining requirements and packaging, creating 3D CAD designs and drawings, coordinating with vendors and manufacturers, and supporting assembly, integration, and testing. The role requires expertise in mechanical engineering, structural analysis, electromechanical integration, and complex robotic systems, with preferred experience in optimized structures, actuators, end-effectors, and high-volume manufacturing.

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.

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.

Own the design and delivery of automated factory equipment from concept through production acceptance. Lead cross-functional mechanical, controls, software, and manufacturing teams; define requirements, conduct design reviews, manage phase gates, and ensure equipment meets timeline, cost, reliability, and performance goals. Partner with factory development and production teams to deploy turnkey systems. The role requires mechanical CAD expertise, automated equipment development experience, and collaboration across engineering and manufacturing functions.

Supports mechanical engineering teams with design documentation, AutoCAD and Revit drawings, design calculations, and sizing of building mechanical systems. Participates in field investigations, construction site visits, and intern education sessions. The role is intended for a mechanical engineering student who has completed at least two years of a bachelor's degree and wants hands-on experience in MEP engineering.

Supports mechanical engineering teams with basic design, CAD/BIM drafting, system design, documentation, coordination with other trades, field investigations, and construction site visits. The role includes developing architectural engineering knowledge through mentorship and the Engineering Development Training program. Candidates must be pursuing or recently completing a mechanical engineering bachelor's degree, with knowledge of AutoCAD, design and calculation software, and Microsoft Office. Revit experience and FE/EIT credentials are preferred.

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.

Leads mechanical engineering design for commercial, institutional, and infrastructure projects from concept through construction close-out. Performs HVAC load and duct design, equipment selection, plumbing and fire protection design, hydraulic analysis, controls documentation, code compliance, design reviews, and quality assurance. Coordinates multidisciplinary teams, manages scope, schedules, budgets, and client relationships, provides technical direction and mentoring, prepares reports and presentations, and supports proposals and marketing.

Designs and owns air delivery subsystems for utility-scale iron-air batteries. Responsibilities include system architecture, fluid-flow modeling, prototyping, testing, design verification, cost optimization, manufacturing transition, vendor leadership, actuator and sensor integration, safety certification support, and mentoring junior engineers.

Own the system-level design of welded steel drone-delivery towers and subassemblies, including structural components, mechanisms, and electronics integration. Apply mechanical fundamentals, hand calculations, FEA, CAD, prototyping, and testing to develop reliable products. Collaborate with electrical, software, civil, NPI, and supply chain teams to transition designs into production and field deployment. Maintain BOMs, release parts, create build documentation, support contract manufacturers, and periodically visit customers and suppliers.

Lead electromechanical design for high-voltage battery power systems including busbars, cables, harnesses, isolation, grounding, enclosures, and safety interlocks. Perform thermal, structural, and manufacturability analyses, run RCAs, create drawings and manufacturing instructions, and take designs from concept to high-volume production while collaborating across engineering teams and supporting test-stand safety.

Designs and owns spacecraft mechanical hardware from concept through production and flight. Responsibilities include developing structures, mechanisms, thermal systems, drawings, and engineering documentation; performing FEA, thermal, and tolerance analyses; prototyping and testing; supporting integration and launch readiness; troubleshooting hardware; and collaborating with suppliers, manufacturers, and multidisciplinary engineering teams.

Support the design, fabrication, installation, commissioning, maintenance, and troubleshooting of pilot plant equipment and refining systems. Translate process requirements into mechanical designs and equipment modifications, maintain engineering documentation, improve reliability and maintainability, and collaborate with process engineers and R&D scientists. Travel to company sites for project support, startup, commissioning, and troubleshooting.

Design custom industrial machinery, automation equipment, robotic tooling, fixtures, and mechanical systems from concept through commissioning. Create CAD models, manufacturing drawings, bills of materials, and engineering documentation using GD&T and design-for-manufacturing principles. Support fabrication, machining, welding, assembly, prototyping, testing, troubleshooting, and continuous improvement while collaborating with manufacturing, controls, suppliers, project management, and technicians.

Leads the design, prototyping, testing, commissioning, and continuous improvement of direct air capture process equipment and pilot plant systems. Responsibilities include CFD and FEA analysis, equipment installation and validation, test rig development, technical documentation, safety reviews, project budgeting and scheduling, vendor coordination, and oversight of junior engineers and designers.

Creates and revises 2D drawings and 3D models for aerospace pressure vessels, piping systems, tooling, and assemblies. Performs pressure-system, fatigue, fracture-mechanics, and fitness-for-service analyses; supports nondestructive testing, procurement, production, assembly, testing, and troubleshooting. Prepares technical documentation and manages project schedules. Participates in design reviews, engineering changes, root-cause investigations, compliance activities, and supplier or customer support, with travel up to 20%.

Embed with enterprise customers to solve mechanical engineering data, integration, and workflow challenges across PLM, ERP, QMS, and design systems. Implement AI-enabled CoLab workflows, validate AI-generated engineering results, identify product gaps, and develop scalable documentation and playbooks. Partner with technical program managers, software engineers, product teams, and customer stakeholders to lead technical projects and improve engineering decision-making.

Own mechanical product development from concept and CAD through prototyping, qualification, and production transfer. Design rugged, safety-critical assemblies; define mechanical safety architecture; specify materials, tolerances, finishes, and fasteners; build prototypes; create manufacturing packages; execute environmental and mechanical qualification testing; and manage BOM, weight, and center-of-gravity budgets while collaborating with hardware and software engineers.

Designs and develops complex mechanical systems, tooling, fixturing, layouts, specifications, and manufacturing processes. Troubleshoots mechanical problems, leads engineering projects and supplier development, coordinates procurement and assembly, generates product specifications and test reports, performs engineering analysis, and communicates technical solutions to internal and external customers. The role supports product handling, assembly, installation, and lifecycle activities.

Lead end-to-end mechanical design, 3D CAD modeling, structural and thermal analysis, tolerance analysis, and system integration for complex fusion hardware. Translate physics requirements into robust components, apply DFM/DFA principles, prepare GD&T drawings and design reviews, and provide cross-functional technical leadership across physics, systems engineering, and manufacturing teams.