Senior Battery Engineer

Responsibilities

• Lead the design, qualification, and lifecycle sustainment of lithium-ion battery systems that
• power WHOOP's advanced wearable technology. This role is critical to achieving the highest
• levels of energy density, reliability, and safety in compact, high-performance form factors. Serve
• as the technical lead for WHOOP's battery systems, driving development across internal
• engineering teams and external partners. Drive innovation in cell design and integration to
• support long-lasting, compact energy systems that meet WHOOP's demanding performance
• standards. Own the batteries subsystem and ensure optimal reliability and safety under real-
• world use conditions. Collaborate with electrical, mechanical, firmware, reliability, and quality
• engineers to optimize battery system performance in a multidisciplinary development
• environment. Lead the creation and execution of test plans, including Design of Experiments
• (DOE), performance validation, and root cause failure analysis for battery-related issues.
• Evaluate and qualify battery suppliers and manufacturing partners, ensuring alignment with
• WHOOP's product standards and regulatory requirements. Maintain organized documentation
• for test results, field performance data, and compliance with international safety and regulatory
• standards (UL, CE, IEC). Ensure WHOOP's battery systems meet or exceed global safety and
• certification benchmarks, supporting regulatory filings as needed. Conduct field quality
• assessments and lead corrective actions for battery-related concerns. Mentor junior engineers and
• contribute to technical roadmaps for future product innovation. Manage battery subsystem
• development timelines and cross-functional team coordination to ensure on-time delivery of new
• and sustained battery technologies. Work with firmware and Electrical engineers to develop and
• optimize the fuel gauge and battery management system for the WHOOP line of products.

Requirements

• Bachelor's degree in Chemical, Mechanical or Electrical Engineering, or related technical field
• (or foreign degree equivalent) and 5 years of experience with battery system design, failure
• analysis, or sustaining engineering. Will also accept a Master's degree in Chemical, Mechanical,
• or Electrical Engineering, or related technical field (or foreign degree equivalent) and 2 years of
• experience with battery system design, failure analysis, or sustaining engineering. Required
• Skills: At least 2 years of experience with Lithium-Ion Cell design and battery chemistry; At
• least 2 years of experience leading cross-functional engineering projects and communicating
• complex technical issues to diverse stakeholders; At least 2 years of experience using Python or
• similar scripting tools for test data analysis and visualization; At least 2 years of experience with
• machine learning methods and data science tools for battery predictive modeling; At least 2 years
• of experience with running battery test equipment (Arbin or Maccor) and battery test
• fixture/DOE development.
• Salary: $146,786/year - $185,000/year

Additional Information

Senior Battery Engineer (Full-Time) Boston, MA

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