Mechanical Engineering

With cutting-edge facilities and groundbreaking projects, Proterra offers unique opportunities to grow, collaborate, and lead transformative change in the electrification of heavy-duty transportation and equipment. Position Overview: This role focuses on the mechanical design of next-generation battery packs, from architecture definition to production at volume. Own design of battery subsystems and components from concept through launch Support architecture decisions with analysis and quantitative input on cost, mass, lifetime performance, and manufacturability Develop subsystem specifications and contribute to requirements definition with cross-functional partners Collaborate across engineering functions to define interfaces and ensure robust integration across mechanical, electrical, and thermal systems cell engineers, modeling engineers, systems engineering, battery electronics engineering, test engineering, manufacturing engineering, quality engineering, program management, supply chain, and other cross-functional teams Contribute to risk identification and mitigation planning Own basic component and subsystem level testing to support design decisions, coordinate large validation efforts with test team Root cause and corrective action execution for design, build, and launch issues Create detailed 3D CAD and 2D drawings using GD&T for parts and assemblies Execute part life cycle and engineering change orders Contribute to generation of supporting documentation (DFMEA, 8D, compliance, etc.) Share knowledge and provide guidance to less experienced engineers About Our Group: We are part of the battery technology team, developing cutting-edge battery packs that meet aggressive cost, energy density, and manufacturability goals. Our team is driven by: Purpose: advancing electrified transportation through world-class battery technology Initiative: owning challenges and experimenting boldly Humility: seeking help and adjusting course when needed Critical thinking: analyzing deeply and questioning assumptions Growth: tackling complex problems and learning continuously Community: building a diverse, inclusive, and supportive environment Kindness: practicing empathy and collaboration Fun: finding energy in the work and each other You will report to the battery pack engineering manager and work closely with colleagues in our Burlingame CA R&D center and Greer, SC production facility. About You: Proactive and self-directed Creative and confident in idea generation Team-oriented, focused on mentorship and collaboration Comfortable influencing across all levels Detail-driven with strong judgment and problem-solving skills Adaptable, organized, and effective in a fast-paced environment Clear communicator; written, verbal, and visual Your Experience Includes: 5+ years of mechanical design experience with contributions to battery systems BS in Mechanical Engineering or equivalent; MS or relevant specialization is a plus Strong mechanical engineering fundamentals Demonstrated depth in at least one area of applied fundamentals (mechanics, thermals, fluids, circuits, etc). Demonstrated experience delivering a design to production with participation across multiple product cycles, high volume manufacturing is a plus Experience designing for several materials and fabrication types (aluminum, steel, copper, plastic, dispensed materials etc. | stamped, cast, extruded, injection molded, coatings, etc.) Ability to contribute to architectural decisions, conduct trade studies, and clearly communicate complex concepts within the team and to immediate leadership Strong collaboration skills and experience working with systems, test, supply chain, and quality functions Experience sharing knowledge and supporting development of junior engineers Designed and assembled in the United States, Proterra’s innovative battery platform offers industry-leading energy density, durability, performance and safety systems - enabling Proterra EV batteries to be the premium choice for commercial vehicles and industrial equipment. Proterra’s battery technology offers industry-leading energy density, safety systems, and durability. Proudly designed in Silicon Valley and assembled in Greer, South Carolina, Proterra® batteries are the premier choice to electrify commercial vehicles ranging from buses and trucks to construction equipment and more. Proterra is building innovative battery technology to power a better, more sustainable world. Location: Burlingame, CA Travel: 10% Compensation: $141,500 - $168,500 Applicants must be authorized to work for any employer in the U.There is no immigration sponsorship available for this role (ex: H1-B, OPT, CPT, TN or any other employment sponsorship). Proterra is an Equal Employment Opportunity Employer, providing equal employment opportunities to all Employees and applicants for employment without regard to race, color, creed, religion, sex, sexual orientation, gender identity, national origin, disability, age, genetic information, veteran status, pregnancy, childbirth, or related medical conditions, including, but not limited to, lactation or any other characteristic protected by applicable federal, state, or local law or ordinance. Proterra participates in the Electronic Employment Verification Program (E-Verify). #LI-JF1 Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities This employer is required to notify all applicants of their rights pursuant to federal employment laws.