Senior Engineer, Battery Systems

Faith Technologies-posted 1 day ago
Full-time • Mid Level
Onsite • Menasha, WI
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We are seeking a Lead Battery Systems Engineer to join our R&D organization and drive innovation in stationary energy storage solutions. This role will focus on the design, development, and validation of advanced battery systems for UPS, C&I, and BESS applications. You will lead system-level testing, create validation plans, and collaborate across disciplines to ensure performance, reliability, and safety of integrated battery systems.

  • Participate in system-level testing of integrated battery systems for UPS, microgrid, EV charging, and data center applications.
  • Develop test plans and protocols to validate battery performance, life, and reliability at cell, module, and pack levels.
  • Conduct and document DFMEA and failure mode analysis for battery systems.
  • Define system-level requirements for size, performance, cost, and compliance for stationary battery systems.
  • Maintain technical documentation, including specifications, selection analysis, and simulation reports.
  • Collaborate with simulation, thermal, and mechanical engineers to define modeling requirements and validate battery architectures.
  • Partner with controls and software teams to establish guidelines for BMS design and integration.
  • Evaluate and benchmark new chemistries and competitive technologies to ensure best-in-class performance.
  • Support verification and validation activities by defining DVP&R for battery system testing.
  • Ensure compliance with industry standards (UL 9540A, UL 1973) and lead risk assessments for product safety.
  • Bachelor’s degree in electrical, Mechanical, Chemical, or related engineering discipline.
  • 5+ years of experience in battery system design, architecture, testing, or integration for stationary applications (UPS, BESS, C&I).
  • Strong knowledge of lithium-ion chemistries, battery architectures, and failure modes.
  • Hands-on experience with battery testing and validation protocols.
  • Familiarity with compliance standards and safety regulations for stationary battery systems.
  • Excellent communication skills for cross-functional collaboration and stakeholder engagement.
  • Strong communication skills to provide clear recommendations and guidelines to stakeholders, technical development teams, and testing teams
  • Master’s degree in electrical, Mechanical, or Chemical Engineering.
  • Experience with DFMEA, root cause analysis, and reliability engineering.
  • Knowledge of aging analysis, end-of-life behavior, and thermal management strategies.
  • Experience with performance modeling tools (MATLAB/Simulink, Simscape) and FEA/CFD for thermal and structural analysis.
  • competitive, merit-based compensation
  • career path development
  • flexible and robust benefits package
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