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# BMS Software Development Engineer

- **Company:** Ford Motor Company
- **Location:** Dearborn, MI, United States
- **Experience:** Expert
- **Salary:** $86,600.0 - $144,900.0
- **Contract:** Permanent contract
- **Skills:** Software Applications, Unit Testing, Software Documentation, Code Review, Software Debugging, Embedded C, Integrated Development Environments, Requirements Traceability, Software Engineering, Software Requirements Analysis, State Machines, Production Code
- **Published:** October 26, 2026
- **Apply:** https://www.techcareers.com/job.asp?id=3467287928&tx=VT6762TYD&pt=1&aff=0B19D771-A501-4A5E-8338-2A822B784D54&utm_source=Job%20Feed&utm_medium=textkernel&utm_campaign=DE&utm_term=0B19D771-A501-4A5E-8338-2A822B784D54

## About the Role

* Bachelor's degree in Electrical, Computer, Mechatronics, Controls, or Mechanical Engineering.
 * 5+ years developing embedded application or control software for electronic control units.
 * Model-based development proficiency with production code generation, plus working C ability.
 * Demonstrated state machine, sequencing, and diagnostic strategy design on a production program.
 * Requirements-driven software development with traceability, unit testing, and code review discipline.
 * Comfort working directly with hardware, benches, and instrumentation to debug control behavior.
 * Strong written and verbal communication skills.
 * Ability and willingness to travel occasionally.

Even better, you may have...

 * Master's degree in Electrical Engineering, Controls, or a related technical field.
 * Battery management control software: contactor sequencing, protection strategy, limit calculation, and balancing.
 * High-voltage system experience and understanding of isolation, precharge, and interlock principles.
 * Software development under functional safety process requirements, including safety mechanism implementation.
 * Calibration methodology and parameter management for production programs.
 * Coordination or aggregation logic across distributed controllers.
 * Thermal management control strategy experience.
 * Technical Skills
 * Model-based development and production code generation
 * Embedded C application software
 * State machine and mode management design
 * High-voltage sequencing and contactor control
 * Protection strategy and limit arbitration
 * Diagnostic strategy design
 * Thermal control strategy
 * Balancing demand logic
 * Calibration and parameter management
 * Requirements traceability and software documentation
 * Bench and hardware debug

## Description

The Battery Management Controls Software Engineer develops the application-layer control software that determines how a high-voltage battery system behaves: operating states, high-voltage sequencing, protection, limits, thermal control, diagnostics, and coordination across multiple strings.

Assignments may include supervisory system-level control software or string-level control software and may shift across the product architecture over the life of the program.

The ideal candidate has designed state machines, protection strategy, and diagnostic logic on a production program, works fluently in a model-based development environment with production code generation, and is comfortable debugging control behavior on real hardware.

What you'll do...

 * Develop and own operating state machines and mode management, including supervisory coordination across multiple controllers.
 * Implement high-voltage sequencing: precharge control and completion verification, contactor activation and deactivation, contactor diagnostics including welded and open contact detection, and interlock handling.
 * Implement protection strategy: cell and pack overvoltage and undervoltage, overcurrent, overtemperature and undertemperature, isolation loss, and thermal event detection and response.
 * Implement current and power limit calculation and arbitration, including derate strategy and coordination of limits across levels of the system.
 * Implement cell balancing demand logic and coordinate balancing behavior across modules and strings.
 * Implement thermal management control, including actuation, setpoint strategy, and thermal diagnostics.
 * Implement aggregation and consolidation of measured and estimated states for reporting at system level, and fault propagation and annunciation to external systems.
 * Own diagnostic strategy: fault detection, debounce, classification, storage, clearing, and reporting.
 * Integrate and calibrate estimation models delivered by algorithm engineering; own the calibration parameter set and its documentation.
 * Develop application software using model-based development with production code generation, plus hand-written C where appropriate.
 * Author software requirements and design documentation traceable to system requirements; support safety and security analyses.
 * Support validation debug, root cause analysis, and field issue resolution.