BMS Software Development Engineer

Jobtailor; Dearborn (MI, MO); On-site; USD 120,000 - 160,000; Full time

Job summary

Jobtailor is seeking an experienced embedded software engineer to own state machines, sequencing, and diagnostics for high‑voltage battery control across multiple ECUs.

You will collaborate with hardware teams, perform safety analyses, and drive calibration and production code generation within a rigorous development process.

Qualifications

• Bachelor’s degree in a relevant engineering field.
• 5+ years developing embedded applications or control software for ECUs.
• Model-based development proficiency with production code generation.
• Working C ability and hands-on hardware debugging experience.
• Experience with state machines, sequencing, and diagnostic strategy design on production programs.

Responsibilities

• Develop and own operating state machines and mode management across controllers.
• Implement high-voltage sequencing including precharge control and interlock handling.
• Create and maintain protection strategies for overvoltage, undervoltage, overcurrent, and temperature extremes.
• Implement current and power limit calculations and derate strategies.
• Develop calibration parameter sets and document them for production.

Skills

Embedded development

Model-based development

C programming

State machine design

Diagnostics strategy

Education

Bachelor’s in Electrical/Computer/Mechatronics/Controls/Mechanical Engineering

Master’s preferred

Tools

Instrumentation

Debugging tools

Production code generation

Job description

• Develop and own operating state machines and mode management, including supervisory coordination across multiple controllers
• Implement high-voltage sequencing, including precharge control, contactor activation/deactivation, contactor diagnostics, and interlock handling
• Implement protection strategies for overvoltage, undervoltage, overcurrent, temperature extremes, isolation loss, and thermal events
• Implement current and power limit calculation and arbitration, including derate strategy
• Implement cell balancing demand logic across modules and strings
• Implement thermal management control, actuation, setpoint strategy, and thermal diagnostics
• Aggregate measured and estimated states for system-level reporting
• Propagate and announce faults to external systems
• Own diagnostic strategy, including 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 and handwritten C
• 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

Requirements

• 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
• 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
• Candidates must be legally authorized to work in the United States
• Visa sponsorship is not available
• Preferred: Master's degree in Electrical Engineering, Controls, or a related technical field
• Preferred: Battery management control software experience, including contactor sequencing, protection strategy, limit calculation, and balancing
• Preferred: High-voltage system experience and understanding of isolation, precharge, and interlock principles
• Preferred: Software development under functional safety process requirements, including safety mechanism implementation
• Preferred: Calibration methodology and parameter management for production programs
• Preferred: Coordination or aggregation logic across distributed controllers
• Preferred: Thermal management control strategy experience

Core Competencies

Demonstrates expertise in developing embedded application software and control strategies for electronic control units, with a strong focus on model-based development, high-voltage systems, and diagnostic strategies. Proficient in requirements-driven software development and capable of integrating hardware with software for effective control behavior.

Highest-signal resume keywords

• Embedded Application Development
• Model-Based Development
• High-Voltage System Experience
• Diagnostic Strategy Design
• Requirements-Driven Software Development

ATS Optimization Keywords

Hard Skills

• C Programming
• State Machine Design
• Control Software Development
• Thermal Management Control
• Fault Detection and Reporting
• Calibration Methodology
• Power Limit Calculation
• Cell Balancing Logic
• Safety Mechanism Implementation
• Unit Testing

Soft Skills

• Strong Written Communication
• Strong Verbal Communication

Industry Keywords

• Electrical Engineering
• Controls Engineering
• Battery Management Control
• Functional Safety Process
• Isolation Principles

Tools & Technologies

• Instrumentation
• Debugging Tools
• Production Code Generation