Senior BMS Cell Algorithm Design Engineer, Battery Pack Design and Architecture

Proterra offers a dynamic and supportive workplace where employees can thrive personally and professionally. With cutting‑edge facilities and groundbreaking projects, we provide unique opportunities to grow, collaborate, and lead transformative changes in the electrification of heavy‑duty transportation and equipment.

The Embedded System team defines, designs, and tests battery pack power electronics control functions for all Proterra products. It also maintains and supports current production programs, providing design‑focused support and technical issue resolution.

• Design and maintain high‑quality cell controls algorithms (SOC, SOH, thermal controls, and power limits).
• Develop, maintain, and validate cell models using experimental parameters and field data to optimize performance.
• Support integration of code into BMS controls for pack or system implementation.
• Own cell‑centric requirements for feature algorithms around monitoring, diagnostics, performance, thermal management, and safety.
• Participate in detailed DFMEA and DVP&R documentation creation.
• Develop technical project plans and schedules covering engineering activities, meeting all design control and product development SOP requirements.
• Support transition of designs from prototype to high‑volume manufacturing, focusing on Design for Manufacturing (DFM) and Design for Assembly (DFA).
• Maintain design documentation and facilitate design reviews.

• Degree in Electrical Engineering, Chemical/Electrochemistry Engineering, Mechatronics, Control Systems or related field; bachelor’s with 5+ years OR Master’s with 3+ industry experience in BMS controls modeling/design.
• Strong proficiency in MATLAB/Simulink and/or Embedded C/C++.
• Experience in BMS development, cell modeling, or battery cell testing.
• Strong understanding of Lithium‑ion chemistry, control theory, and BMS communication protocols (CAN, UDS).
• Experience with Vector tools (CANalyzer, CANape) and revision control repositories (GIT).
• Strong background with DFMEA, PFMEA, FTTI, etc.
• Strong problem‑solving skills and ability to perform root cause analysis.

• Prior experience in high‑voltage battery systems, energy storage or EV industry.
• Deep knowledge of battery electrical components (cells, modules, current collectors, busbars, module‑to‑pack integration).
• Knowledge of manufacturing test processes unique to battery pack construction (capacity testing, broken weld detection).
• Knowledge of other cell chemistries (LFP, NMC).
• Knowledge of safety critical standards ISO 26262 and ASPICE.

Onsite role in Greer, SC

Up to 15% travel

Applicants must be authorized to work in the U.S. No immigration sponsorship is available for this role.

Proterra is an Equal Employment Opportunity Employer, providing equal employment opportunities to all employees and applicants for employment without regard to race, color, creed, religion, sex, sexual orientation, gender identity, national origin, disability, age, genetic information, veteran status, pregnancy, childbirth, or related medical conditions, including, but not limited to, lactation or any other characteristic protected by applicable federal, state, or local law or ordinance.

Proterra participates in the Electronic Employment Verification Program (E‑Verify).