Embedded Systems Software Engineer

Proterra•Greer, SC

22h•Onsite

About The Position

Proterra is seeking an Embedded Systems Software Engineer to join the Battery Management Systems (BMS) team in a field reliability and current product support capacity. This role is focused on sustaining and improving production BMS software through diagnostics implementation, calibration, and hands-on field issue resolution — ensuring deployed battery systems continue to perform safely and reliably throughout their operational life. The ideal candidate brings 2–3 years of experience in embedded software development within automotive, EV, or battery systems, with practical knowledge of BMS diagnostics, CAN/UDS communication protocols, and calibration toolchains. This is an excellent opportunity for an early-career engineer to build deep expertise in BMS sustainment and field engineering within a high-impact electrification program. This is a role that offers direct engagement with deployed battery systems in the field, close collaboration with manufacturing and service teams, and a clear path to deeper BMS application development as the engineer grows within the organization.

Requirements

Bachelor’s degree in Electrical Engineering, Computer Engineering, Mechatronics, or related field with 2–3 years of industry experience in embedded software development, automotive controls, or battery/EV systems
Working knowledge of CAN and UDS protocols, including experience with network analysis tools and basic diagnostic service configuration or testing
Experience with BMS diagnostic development or calibration, including DTC configuration, debounce logic, and fault memory validation
Experience supporting field reliability activities such as root cause analysis, corrective action documentation, or warranty data review
Proficiency with Vector toolchain (CANalyzer, CANape, or equivalent)
Experience with Git-based version control and structured software development workflows
Strong analytical and root cause analysis capabilities, with a structured approach to problem isolation and resolution
Familiarity with relevant standards and protocols including SAE J1939, ISO 21434, ISO 14229, or equivalent
Strong data analysis skills; proficiency in Python, MATLAB, or similar tools for processing and visualizing large test datasets
Effective written and verbal communication skills, with the ability to clearly summarize test results, field observations, and software issue status for engineering and program management audiences
Demonstrated ability to manage multiple concurrent workstreams in a fast-paced product development environment

Nice To Haves

Solid embedded C/C++ development skills in a production-quality, safety-critical environment
Exposure to BMS calibration workflows, parameter tuning, or over-the-air software update processes
Prior experience at an EV OEM, Tier 1 supplier, or battery manufacturer
Experience with test equipment such as battery cyclers, environmental chambers, vibration tables, and data acquisition systems
Experience with MATLAB/Simulink model-based development and auto-code generation
Background in lithium-ion cell electrochemistry, SOC/SOH algorithm design, or battery cell testing
Familiarity with LFP, NMC, or other advanced cell chemistries
Exposure to high-voltage battery pack architecture: cells, modules, busbars, current collectors
Knowledge of pack-level manufacturing test processes (capacity testing, isolation testing, broken weld detection)
Familiarity with software change management processes, regression test planning, or production software release workflows in an automotive or industrial environment

Responsibilities

Serve as the primary engineering point of contact for current production BMS software, owning field issue intake, investigation, and corrective action deployment in coordination with field service and manufacturing teams
Implement and calibrate BMS diagnostic features including DTC definitions, debounce and healing logic, fault memory management, and EOL diagnostic routines using Vector tools (CANalyzer, CANape)
Analyze field data and warranty return information to identify recurring software-related failure modes, document root cause findings, and support corrective action development
Support implementation and validation of CAN-based communication stacks; perform network-level signal capture, analysis, and debugging using CANalyzer and equivalent tools
Develop and validate UDS (Unified Diagnostic Services) service implementations for fault memory access, ECU identification, and EOL flash programming; support calibration workflows using CANape
Execute calibration and measurement workflows using Vector tools (CANalyzer, CANape) across HIL, bench, and vehicle-level test environments; maintain calibration datasets and support release processes
Serve as the sustaining software lead for assigned BMS features, managing software change requests, regression test execution, and SW release coordination for current production programs
Review and support integration of embedded C/C++ and MATLAB/Simulink-generated code changes into production BMS controllers; execute regression testing and document verification results
Author and maintain field reliability documentation including failure analysis reports, software change records, and calibration release notes
Collaborate with cell characterization, manufacturing, and field service teams to triage BMS software anomalies, validate proposed software fixes, and support over-the-air or depot update deployments
Participate in design reviews, code reviews, and change board meetings to support current production program sustainment and continuous improvement
Support manufacturing engineering with BMS end-of-line (EOL) test software, production diagnostic coverage validation, and process-related software configuration management
Lead root cause analysis for production and field software issues, coordinating with cross-functional teams to develop, validate, and deploy corrective software updates