Technical Expert: Battery Energy Storage Systems (BESS)

The energy transition demands bold expertise and deep commitment. At ENGIE, we are building a cleaner, more resilient energy future — and battery storage is at the heart of that transformation. We need specialists who can push the boundaries of what's possible with utility-scale energy storage.

As a Technical Expert for BESS within our Global Maintenance Services team, you will be the go-to authority for diagnostics, performance optimization, and reliability of large-scale battery systems. Your work will directly impact how we store, dispatch, and manage renewable energy across the Asia-Middle East-Africa region.

What You'll Do
- Lead advanced fault diagnostics across cell, module, rack, PCS, BMS, and system levels for stand-alone and hybrid BESS assets.
- Conduct battery testing including cycle testing, capacity assessments, impedance spectroscopy, and degradation profiling on Li-ion chemistries (LFP, NMC, NCA, LTO).
- Perform root cause analysis for thermal events, cell imbalance, PCS failures,



and accelerated degradation — delivering actionable corrective recommendations.
- Evaluate hybrid system interactions involving solar/wind inverters, MPPT controllers, and grid-forming equipment to optimize renewable firming and smoothing.
- Support warranty validation, insurance claims, and lifecycle decisions using SOH data, event logs, and cycle count evidence.
- Define spare parts strategies and collaborate with OEMs on firmware updates, design corrections, and component quality improvements.
- Develop standardized operating procedures for diagnostics, safety protocols, and compliance with IEEE, IEC, and UL standards.

What You Bring
- Bachelor's or Master's degree in Electrical Engineering, Power Electronics, or Energy Storage.
- 8 to 10 years of hands-on experience with utility-scale BESS projects.
- Deep expertise in battery technology, degradation mechanisms, and safety engineering.
- Robust knowledge of PCS

📌 Expert BESS (Pune)
🏢 ENGIE
📍 Pune