As a Sr. Mechanical Design Engineer at Bimotal, you will own components and subassemblies of electric powertrains through their complete product lifecycle. Your responsibilities will span from hand calculations and concept design through FEA, prototyping, testing, optimization, DFM, production ramp, and long-term reliability improvements—including field issue resolution and service reduction strategies. If you are excited to take ownership of projects with real stakes, work independently, and tackle unfamiliar and challenging problems to build world-class electric powertrains we would love to hear from you.
Responsibilities
- Full-stack mechanical engineering development, design, and execution
- Design of powertrain and actuation hardware along with supporting toolsets - test fixtures, production tools, and assembly fixtures
- Spreadsheet calculations, system architecture, CAD design, FEA, rapid prototyping, and optimization with fast design iterations; PLM/PDM lifecycle management; NPI line management and prototype assembly; manufacturing support; supplier management
- Design for manufacturability, testability, reliability, and serviceability
- Supply chain collaboration, including communication and technical discussions with suppliers
- Support production ramp by root causing mechanical issues, improving processes, designing fixtures, and more
Qualifications
- Expert with CAD packages; strong physics background with extensive mechanical engineering expertise and a passion for detail and deep work
- Experience taking products from concept to high-volume production
- Excellent reading, writing, and verbal communication skills
- Extremely motivated and excited to take on major responsibility at an early-stage startup
- Experience in the creation and operation of test equipment
- Preferred – experience with the design and simulation of gearbox components and assemblies
- Preferred - experience with robotics actuation systems
- Preferred – strong skills in CFD, thermal, and mechanical simulation
- Preferred – electrical knowledge and understanding; ability to read schematics, interpret circuit board layout traces and PCBA designs, and understand how they translate into the mechanical domain
Compensation and Benefits
- Salary Range: $120k - $160k
- Commensurate equity packages with experience
- Flexible PTO
- Health insurance stipend & 401k plan
- Lunch in-office
- 4 days in office at beautiful Berkeley, CA
What We Do
Bimotal designs integrated powertrains — motor, gearbox, power electronics, firmware, and enclosures — for teams that need bespoke high-performance actuation. We serve robotics, medical, mobility, and aerospace customers who can't get what they need from incumbents on the timeline modern hardware teams require. To meet that demand, we're building automated design software for compact motor drives, which lets us deliver custom solutions far faster than the industry standard. Our vision is to become the actuation and motion layer for the next generation of robotics — the muscle that complements progress in AI and controls. To date, we've shipped real hardware and launched a consumer product that won TIME's Best Inventions of 2024, signed B2B contracts to extend our product and application suite, and are building pipeline to serve the actuation needs of tomorrow.
Why Work With Us
Bimotal's core mission is to elevate human capability. This very much includes that of every employee. We promote a high-agency, low-ego work environment focused on solving hard problems. We collaborate in-person in beautiful Berkeley, CA and have full prototyping, testing, and assembly all in one location.
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