[ engineering ]

Staff Mechanical Design Engineer – Electromechanical

Location: Menlo Park, California
Work mode: Hybrid
Listed: Jul 1, 2026

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[ About this role ]

Mainspring Energy is seeking a Staff Mechanical Engineer - Battery Design to lead battery pack and module development for their energy platforms. This role involves defining next-generation battery architectures, improving existing systems, and partnering with suppliers to influence designs, focusing on safety, reliability, manufacturability, performance, and cost.

Skills and focus areas

battery pack design
module development
lithium-ion batteries
supplier management
mechanical engineering
electrical engineering
thermal management
system architecture
cell integration
safety engineering
reliability engineering
manufacturing

Summary written by Ramai from the original posting. Full details and requirements are on Mainspring Energy’s careers page.

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