Embedded Software Developer – Battery Management Systems

Pentangle Tech Services | P5 Group; Plymouth (MI); On-site; USD 110,000 - 150,000; Full time

Job summary

Pentangle Tech Services | P5 Group in Plymouth, MI is seeking an Embedded Software Developer with BMS expertise. The role focuses on design, development, and validation of automotive embedded software for EV/HEV battery systems. You will work with CAN/CAN FD, ECU diagnostics, and real-time systems.

The ideal candidate has hands-on Embedded C/C++, experience with automotive MCUs, and familiarity with AUTOSAR Classic, ISO 26262, and MISRA C/C++. Onsite collaboration with hardware teams is expected.

Qualifications

• Bachelor’s or Master’s degree in a relevant engineering field.
• Hands-on Embedded C/C++ programming experience.
• Experience with automotive ECUs and microcontrollers.
• Familiarity with CAN/CAN FD and ECU diagnostics.
• Knowledge of real-time embedded software development.

Responsibilities

• Design, develop, and maintain embedded software for BMS.
• Implement SOC, SOH, SOP algorithms and cell balancing features.
• Develop low-level drivers, middleware, and HALs.
• Integrate software with battery monitoring ICs and ECUs.
• Axial debugging using CANoe/CANalyzer and similar tools.
• Follow AUTOSAR, ASPICE, and ISO 26262 standards.
• Perform unit tests, SIL, HIL, and vehicle-level validation.
• Participate in code and architecture reviews.

Skills

Embedded C/C++

Python

CAN/CAN FD

Real-time systems

ECU diagnostics

Education

Bachelor's or Master's degree in Electrical Engineering, Electronics, Computer Engineering, Computer Science, or related field

Tools

MATLAB/Simulink

Stateflow

AUTOSAR Classic

MISRA C/C++

Job description

Title: Embedded Software Developer – Battery Management Systems (BMS)

Location: Plymouth, MI (Onsite)

Industry: Automotive / Electric Vehicles (EV)

Job Overview

We are seeking an experienced Embedded Software Developer with expertise in Battery Management Systems (BMS) to design, develop, integrate, and validate embedded software for automotive battery management applications used in Electric Vehicles (EVs) and Hybrid Electric Vehicles (HEVs).

The ideal candidate will have strong hands-on experience in Embedded C/C++, automotive microcontrollers, CAN/CAN FD communication, ECU diagnostics, and real-time embedded software development. Experience with EV battery management, battery monitoring, protection mechanisms, and functional safety is highly preferred.

Key Responsibilities

• Design, develop, and maintain embedded software for automotive Battery Management Systems (BMS).
• Develop software functions for battery monitoring, State of Charge (SOC), State of Health (SOH), State of Power (SOP), cell balancing, and battery protection.
• Implement battery safety features, fault management, contactor control, high-voltage interlock, and thermal management interfaces.
• Develop production-quality embedded software using C/C++.
• Develop and integrate low-level drivers, middleware, application software, and hardware abstraction layers.
• Implement communication protocols including CAN, CAN FD, LIN, SPI, I2C, and UART.
• Implement automotive diagnostics using UDS (ISO 14229), DTCs, and ECU diagnostic services.
• Integrate software with battery monitoring ICs, sensors, actuators, and vehicle ECUs.
• Perform debugging and troubleshooting using Vector CANoe/CANalyzer, Lauterbach TRACE32, oscilloscopes, and logic analyzers.Support unit testing, software integration, SIL, HIL, and vehicle-level validation.
• Perform root-cause analysis and resolve software defects.
• Follow automotive software development standards, including AUTOSAR Classic, ASPICE, and ISO 26262.
• Participate in software architecture reviews, code reviews, requirements analysis, and technical documentation.

Required Qualifications

• Bachelor's or Master's degree in Electrical Engineering, Electronics, Computer Engineering, Computer Science, or a related field.
• Strong hands-on programming experience in Embedded C/C++.
• Experience developing software for automotive embedded controllers or ECUs.
• Experience with automotive microcontrollers such as:
• Infineon AURIX
• NXP S32K/S32G
• Strong understanding of real-time embedded systems, interrupts, timers, memory management, ADC, PWM, GPIO, watchdogs, and boot initialization.
• Hands-on experience with CAN/CAN FD and automotive communication protocols.
• Knowledge of UDS, DTCs, diagnostic sessions, and ECU diagnostics.
• Experience with embedded software debugging and automotive network analysis tools.

Preferred BMS Experience

Candidates with experience in the following areas will be strongly preferred:

• Automotive Battery Management Systems (BMS) for EV/HEV/PHEV applications.
• Lithium-ion battery architectures and battery pack management.
• Cell voltage, current, and temperature monitoring.
• SOC, SOH, and SOP algorithms.
• Cell monitoring and balancing.
• Contactor and pre-charge control.
• High-voltage safety and isolation monitoring.
• Battery thermal protection and management.
• Over-voltage, under-voltage, over-current, and short-circuit protection.
• BMS diagnostics and fault management.

Technical Skills & Tools

Category

Technologies

Programming

Embedded C, C++, Python

Automotive

AUTOSAR Classic, UDS, CAN, CAN FD, LIN

Communication

SPI, I2C, UART

Microcontrollers

Model-Based Development

MATLAB, Simulink, Stateflow

Functional Safety

ISO 26262, ASPICE, MISRA C/C++

Testing

Unit Testing, SIL, HIL, Integration Testing

Configuration & ALM

Preferred Skills

• Experience developing safety-critical automotive embedded software.
• Understanding of ASIL-oriented software development and functional safety concepts.
• Knowledge of MISRA C/C++ coding guidelines and static code analysis.
• Experience with MATLAB/Simulink and model-based software development.
• Knowledge of bootloaders and ECU flashing.
• Familiarity with automotive ECU cybersecurity.
• Strong debugging, troubleshooting, and root-cause analysis skills.
• Ability to work collaboratively with hardware, systems, controls, validation, and functional safety teams.

Ideal Candidate Profile

We are looking for an Embedded Software Engineer with strong automotive ECU development experience and preferably direct hands-on BMS development experience. Candidates with EV battery management, Embedded C/C++, CAN/CAN FD, automotive microcontrollers, and functional safety backgrounds will be given preference.