Lead BMS System Engineer – Stationary Energy Storage (BESS)
About the Role
We are seeking a Lead BMS System Engineer to drive the architecture, design, and validation of Battery Management Systems (BMS) for commercial and utility?scale stationary Battery Energy Storage Systems (BESS).
In this role, you will own the end?to?end BMS system lifecycle—from requirements definition and system architecture to validation, field deployment, and continuous improvement. You will act as the technical authority for BMS within the BESS platform, mentoring engineers and collaborating closely with power electronics (PCS), EMS, grid integration, and validation teams.
This position demands solid system?level thinking, deep BMS expertise, and technical leadership to ensure safety, scalability, reliability, and long?term performance of field?deployed energy storage assets.
Key Responsibilities
Technical Leadership & Ownership
- Act as technical lead and subject?matter expert (SME) for BMS architecture in stationary BESS products.
- Own system?level BMS requirements, interfaces, and design decisions.




- Review and approve BMS designs, algorithms, and implementation from junior engineers.
- Mentor and technically guide engineers across firmware, validation, and system integration.

BESS Controller & System Design
- Lead the design and development of BESS controller architecture, coordinating BMS, PCS, EMS, and SCADA interfaces.
- Define system?level control strategies for long?duration, high?capacity battery systems.
- Ensure scalability across multi?rack, containerized, and MW/MWh?scale deployments.

BMS Firmware & Algorithms
- Architect and guide development of RTOS?based BMS firmware (C / C++).
- Lead implementation and tuning of advanced BMS features:
- Cell and module monitoring
- Passive and active cell balancing algorithms
- Protection, derating, and control logic
- Ensure firmware follows safety?critical and reliability?focused design practices.

Communication & Integration
- Defi

📌 Lead BMS Design BESS (Bengaluru)
🏢 LT-Larsen & Toubro
📍 Bengaluru