Battery Systems Engineer II: Validation & Impact

Mass Digital Health; Boston (MA); On-site; USD 110,000 - 150,000; Full time

Job summary

WHOOP is seeking a Battery Engineer II in Boston to help ensure the quality, reliability, and performance of our battery systems. You will collaborate with global teams, suppliers, and testing labs to validate next‑generation designs and document results across the development lifecycle.

The role emphasizes hands‑on testing, failure analysis, and regulatory activities, with opportunities to drive improvements and AI‑assisted workflows. Boston‑based relocation may be required.

Qualifications

• BS with 2+ years of experience in battery systems, or MS with 1+ years experience.
• Experience in lithium‑ion battery development, testing, validation, or related academic research.
• Strong understanding of lithium‑ion cell design, battery chemistry, testing standards, safety guidelines, and lab instrumentation.
• Experience writing technical reports and documenting test plans, quality findings, supplier assessments, regulatory compliance activities, and test evaluations.
• Strong communication skills for battery‑related technical topics clearly in cross‑functional settings.
• Understanding of tolerance stack analysis, mechanical GD&T, and measurement methods.
• Familiarity with Python or similar tools for data visualization, analysis, and automation.
• Awareness of emerging battery technologies, materials, and market trends.

Responsibilities

• Develop, execute, and document battery pack, system, and component‑level test plans for design validation, qualification, performance, durability, and safety.
• Collaborate with multidisciplinary engineering teams and suppliers across the globe to translate system and cell‑level safety and performance requirements into functional battery pack architectures.
• Support regulatory certification activities (e.g., UL, CE, IEC), internal safety audits, DFMEA, risk assessments, root cause analysis, and failure investigation workflows.
• Manage testing, review supplier test reports, and support verification and validation for new projects, suppliers, and alternate battery technologies.
• Evaluate lithium‑ion batteries across different designs, use cases, and WHOOP product conditions to assess performance, safety, longevity, and manufacturability.
• Travel to supplier sites as needed for line audits, design reviews, builds, and joint problem‑solving (up to 15%).

Skills

Battery systems

Test planning

Regulatory compliance

Python

DFMEA

Technical reporting

Cross-functional teamwork

Education

BS in Battery Engineering

MS in Battery Engineering

Tools

Lab instrumentation

Testing equipment

Job description

WHOOP is seeking a Battery Engineer II in Boston to help ensure the quality, reliability, and performance of our battery systems. You will collaborate with global teams, suppliers, and testing labs to validate next‑generation designs and document results across the development lifecycle.

The role emphasizes hands‑on testing, failure analysis, and regulatory activities, with opportunities to drive improvements and AI‑assisted workflows. Boston‑based relocation may be required.