Sr Embedded Software Engineer

EOS•Edison, NJ

About The Position

Eos Energy Enterprises, Inc. is accelerating the shift to American energy independence with positively ingenious solutions that transform how the world stores power. Our breakthrough Znyth™ aqueous zinc battery was designed to overcome the limitations of conventional lithium-ion technology. It is safe, scalable, efficient, sustainable, manufactured in the U.S., and the core of our innovative systems that today provides utility, industrial, and commercial customers with a proven, reliable energy storage alternative for 3 to 12-hour applications. Eos was founded in 2008 and is headquartered in Edison, New Jersey. For more information about Eos (NASDAQ: EOSE), visit eose.com. Experienced Embedded Software Engineer to design, develop, and optimize firmware for Battery Management Systems specifically tailored to zinc-bromide battery technologies. This role involves creating microcontroller-based solutions using the V-model of software design and testing, ensuring systematic and traceable development with a strong focus on safety compliance according to IEC 60730 Annex H. The engineer will integrate microcontrollers like the STM32 family, implement communication protocols such as CAN/CANFD and RS-485, and interface analog-to-digital converters (ADCs) with sensors to monitor critical parameters of zinc-bromide batteries.

Requirements

Proficient in C/C++ for embedded systems development.
Ability to rapidly prototype software solutions using C/C++ and other relevant programming languages, frameworks, and libraries.
Knowledge of embedded systems development, including familiarity with microcontrollers, memories, A/D converters and real-time operating systems (RTOS).
Familiarity with communication protocols commonly used in battery systems, such as CAN bus, Modbus, SPI, and I2C.
Proficient in debugging tools, oscilloscopes, logic analyzers, and protocol analyzers.
Ability to work independently and collaboratively within a cross-functional engineering team.
Strong problem-solving skills and the ability to troubleshoot complex software issues in a timely manner.
Excellent communication skills, with the ability to clearly document and explain safety-critical design and testing concepts.
Bachelor's degree in electrical engineering, computer engineering, or related field required.
Minimum of 8 years' experience

Nice To Haves

Familiarity with BMS algorithms for SoC and SoH estimation – knowledge of zinc-bromide batteries is a plus.
Knowledge of embedded security principles, including secure bootloaders and encryption for BMS communication.

Responsibilities

Lead a team of engineers to design and develop BMS Firmware: Create and maintain firmware for microcontrollers, primarily focusing on STM32 family devices, using the V-model to ensure structured development and safety compliance with IEC 60730.
Implement BMS Communication Protocols: Design and implement communication interfaces such as CAN/CANFD and RS-485 to support real-time data transmission and control specific to zinc-bromide battery systems.
Develop BMS Safety Features: Design diagnostics, self-test functions, and fail-safe mechanisms aligned with IEC 60730 Annex H. Implement functions such as overvoltage/undervoltage protection, current balancing, electrolyte monitoring, and fault detection to ensure BMS safety and reliability.
Analog-to-Digital Integration for Battery Monitoring: Interface and configure ADCs to accurately measure voltage, current, electrolyte levels, and temperature parameters for zinc-bromide batteries, enabling real-time monitoring and management of State of Charge (SoC) and State of Health (SoH).
V-Model Testing for BMS: Apply the V-model approach to verify and validate safety-critical functions at each development phase, ensuring comprehensive compliance, traceability, and reliability of zinc-bromide BMS.
Hardware-Software Integration: Collaborate with hardware engineers to ensure proper integration of firmware with BMS hardware components, including sensors, and power electronics, conducting safety validation and performance testing.
Documentation and Compliance: Develop detailed technical documentation, including design specifications, test plans, and compliance reports, in line with IEC 60730 Annex H and V-model methodologies.
Stay Updated: Keep abreast of the latest advancements in BMS design, microcontroller platforms, safety standards, and communication protocols relevant to energy storage systems.
Collaborate with and support other groups in the company in developing user-friendly tools for troubleshooting and commissioning.
Participate in future product roadmap development.
Ensure a safe work environment by following health and safety guidelines and policies.
Lead and conduct root cause failure investigations.
Develop robust and efficient software/firmware engineering processes.
Work with the engineering team to complete and maintain software documentation of current and new products.
Other duties, responsibilities and activities may change or be assigned at any time with or without notice.