Senior BMS Controls and Algorithm Engineer

Job Summary:

The Senior BMS Controls and Algorithm Engineer leads the design, development, and validation of Battery Management System (BMS) controls, estimation algorithms, and functional features for high-voltage battery systems. The role covers the functional scope of a production BMS-state estimation (SoC, SoH, SoP, SoE), contactor controls, cell balancing, thermal management, isolation monitoring, diagnostics, and functional safety-across multiple chemistries and applications. This role features MATLAB/Simulink and model-based design development approach to deliver production software that improves battery performance, safety, and life, and partners with systems, software, validation, and vehicle integration teams to bring it to production.

Responsibilities:

• Develop and validate BMS state estimation algorithms using Kalman filtering, adaptive observers, and model-based methods.
• Develop BMS functional control features related to contactor and pre-charge control sequencing, cell balancing, thermal management, charge/discharge limit arbitration, wake/sleep behavior, and multi-pack control features.
• Develop diagnostics and fault-handling strategies covering cell, sensor, isolation, contactor, communication, and thermal faults, including detection, reaction, and recovery.
• Support functional safety development per ISO 26262, including safety goals, Failure Modes, Effects, and Diagnostic Analysis (FMEDA) inputs, safety mechanisms, and Automotive Safety Integrity Level (ASIL) rated software.
• Develop high-voltage isolation monitoring, interlock handling, and high-voltage (HV) safety logic.
• Develop equivalent-circuit and physics-based battery models for real-time embedded execution and offline simulation.
• Design controls algorithms to be scalable across chemistries, cell formats, and pack architectures.
• Define software and controls requirements from customer, vehicle, and system-level inputs.
• Perform algorithm and feature validation through MIL, SIL, HIL, bench, and vehicle testing.
• Support embedded software integration, auto-code generation, calibration, and production software releases.
• Analyze battery and vehicle data using Python and modern data tools to refine models, calibrations, and diagnostics.
• Apply AI-assisted engineering tools to accelerate algorithm development, simulation, validation, scripting, and documentation.
• Support root cause analysis and issue resolution across prototype, validation, launch, and production phases.
• Collaborate with hardware, systems, software, validation, and vehicle integration teams, and participate in customer technical reviews.
• Adhere to federal and state regulations.
• Adhere to all company policies, processes, and procedures.
• Performs other duties as requested, directed, or assigned.
• Predictable and reliable attendance.

Position Qualifications:

• Bachelor's degree in Electrical, Computer, Controls, Mechanical Engineering, or related technical field.
• Minimum of five (5) years of experience in BMS, battery controls, or embedded automotive software development.
• Strong hands-on experience with MATLAB, Simulink, Stateflow, and model-based design.
• Experience developing BMS functional controls such as contactor/pre-charge control, cell balancing, thermal management, and current/power limit arbitration.
• Experience developing state estimation algorithms using Kalman filtering or observer-based methods.
• Experience with BMS diagnostics, fault detection and reaction, and high-voltage isolation monitoring.
• Working knowledge of ISO 26262 and functional safety as applied to high-voltage battery systems.
• Experience with embedded software integration, auto-code generation, and production release processes.
• Experience with HIL/SIL validation and Controller Area Network (CAN) tools including CANalyzer, CANoe, Vehicle Spy, or equivalent.
• Proficiency in Python for data analysis and validation workflows.
• Strong analytical, troubleshooting, and communication skills.

Key Competencies :

• Decision Making & Analysis: Makes sound decisions based upon a mixture of data-driven analysis, expertise, experience, and judgment; collects relevant information, seeking input from others, and identifies connections and/or root causes of problems
• Continual Improvement: Displays a consistent orientation toward producing the highest quality products or services, while keeping a focus on sustainability. Constantly looking for incremental improvements in work processes and results.
• Takes Initiative: Exhibits strong drive for results and success; conveys a sense of urgency and drives issues to closure; persists despite obstacles and opposition.
• Delivers Results: Achievement-oriented, feeling a sense of urgency to reach goals on time, if not before.
• Teamwork: Works cooperatively with others to accomplish team goals and organizational objectives.
• Communications: Exchanges thoughts, feelings, and information effectively

Physical Requirements / Working Conditions:

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions.

• Prolonged periods sitting at a desk and working on a computer.
• Constantly operates a computer and other office equipment.
• Ability to adjust focus, especially due to concentration on a computer screen.
• Works in a temperature-controlled office environment, with occasional work in outdoor weather conditions, and in industrial environments.
• The noise level in the work environment can be moderately loud.

Why Join Us

American Battery Solutions (ABS) provides comprehensive 100% employer paid benefit plans to employees and their family, competitive salary and retirement program. ABS employs a diverse and inclusive workforce.

Benefits Overview

• Paid time off includes 3 weeks vacation, up to 72 hours sick, 15 holidays, and parental leave.
• 100% company-paid medical, dental, vision, short-term disability, long-term disability, and life insurance.
• Flexible Spending Account (FSA) and Health Savings Account (HSA) offerings.
• Company provided 401K savings plan with immediately vested matching contributions to help you save for retirement.
• Voluntary benefits offerings.
• Tuition assistance.
• Employee Referral Program.
• Employee development and career growth opportunities.

About Us

American Battery Solutions Inc. ("ABS") is a manufacturer of advanced batteries for commercial, fleet, and industrial on- and off-road vehicles. Located in the heart of the U.S. automotive region with facilities in Michigan and Ohio. In 2023, ABS was acquired by Komatsu, a world leader in construction, mining, forestry, and industrial heavy equipment in support of Komatsu's 2050 carbon neutrality goal. ABS continues to operate as an independent entity serving Komatsu applications while continuing to expand and grow our core commercial, fleet and industrial business.


As we have grown, ABS has assembled a world-class team of dedicated and experienced engineers. This team is equipped with a deep understanding of high-voltage, automotive-grade battery systems from concept development and prototyping, to testing and validation, to high-volume production. We pride ourselves on developing a diverse team of next generation battery experts.

The Location - Lake Orion

American Battery Solutions Headquarters and Innovation Center is located in the heart of South-East Michigan in Orion Township. Orion Township is a Pure Michigan Trail Town that has a long-standing dedication to enhancing trails and pathways in its community, which is home to the Polly Ann Trail, Paint Creek Trail, and Iron Belle Trail. The township has more than 50 miles of trails. Southeast Michigan also boasts some of the best eating around! Whether your interest is in furthering your education, enjoying one of the many regional sporting events, or enjoying the vast outdoors that Michigan has to offer, you'll be at the center of it here!

AMERICAN BATTERY SOLUTIONS IS AN EQUAL OPPORTUNITY EMPLOYER.