Battery Engineer II

At WHOOP, we're on a mission to unlock human performance and healthspan. WHOOP empowers members to perform at a higher level through a deeper understanding of their bodies and daily lives. As a Battery Engineer II at WHOOP, you will help ensure the quality, reliability, and performance of the batteries that power our products. Working closely with cross-functional engineering teams, suppliers, and third-party testing labs, you will support the validation and development of next-generation battery systems through testing, failure analysis, supplier qualification, regulatory compliance, and continuous design improvement. You will contribute to advancing battery technology by improving validation processes, testing standards, and technical documentation across the product development lifecycle. This is a hands-on role with the opportunity to drive meaningful impact through experimentation, analysis, and collaboration. RESPONSIBILTIES: Develop, execute, and document battery pack, system, and component-level test plans for design validation, qualification, performance, durability, and safety across NPI programs and internal evaluations Collaborate with multidisciplinary engineering team