Senior Battery Cell Engineer

The role

This person will evaluate, qualify, and improve lithium-ion cells for current and future products. They will apply expertise in electrochemistry, cell design, testing, manufacturing, and failure analysis.

What you will do

• Evaluate new cell designs, chemistries, form factors, and suppliers.
• Develop and execute cell qualification plans.
• Plan and conduct design of experiments (DOEs).
• Collaborate with battery system engineers to translate cell attributes into pack designs.
• Operate battery cyclers, environmental chambers, and laboratory equipment.
• Partner with suppliers and cross-functional engineering teams.
• Lead cell-related failure investigations and root cause analysis.
• Document and communicate qualification results and technical risks.

Required qualifications

• Bachelor’s degree in Chemical Engineering, Materials Science, Mechanical Engineering, or a related field with 5+ years of relevant experience; or a master’s degree or PhD with 2+ years of relevant exp
• Strong understanding of lithium-ion electrochemistry, cell design, manufacturing processes, and degradation mechanisms.
• Hands-on experience with cell characterization, qualification testing, and battery cyclers such as Arbin, Maccor, or similar systems.
• Experience analyzing battery data, conducting failure investigations, and developing clear technical recommendations.
• Experience collaborating with battery suppliers, manufacturing partners, and cross-functional product development teams.
• Experience with Python, MATLAB, Minitab, JMP, or similar tools for data processing, statistical analysis, and visualization.
• Familiarity with cell teardown, cross-sectioning, microscopy, CT scanning, gas analysis, or other advanced failure analysis techniques.
• Strong commitment to embracing and leveraging AI tools in day-to-day tasks.

Benefits

• base salary
• generous equity package

Before you apply

• Must be prepared to relocate if necessary to work out of the Boston, MA office.
• Participates in E-verify to determine employment eligibility.

About the company

WHOOP empowers members to perform at a higher level through a deeper understanding of their bodies and daily lives.