BESS Expert

Engie; Pune District; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

Engie in Pune, India is seeking a Technical Expert for Battery Energy Storage Systems (BESS). The role leads diagnostics, testing, and reliability enhancements for utility-scale and hybrid energy storage projects, requiring 8–10 years of hands-on BESS experience and deep knowledge of Li-ion chemistries, BMS, EMS/PMS, and system-level controls.

You will supervise fault diagnosis, performance evaluation, and OEM engagements, coordinating across engineering and asset management to improve lifespan,

Qualifications

• Bachelor's or Master's in Electrical Engineering, Power Electronics, or Energy Storage.
• 8–10 years hands-on BESS experience with battery technology, testing, and degradation analysis.
• Expertise in BMS, PCS, EMS/PMS, and IEC/IEEE standards.

Responsibilities

• Lead diagnostics, repair, and maintenance for BESS modules and systems.
• Evaluate system performance and grid interaction for stand-alone and hybrid BESS.
• Analyze battery degradation and perform RCAs with OEM engagement.
• Diagnose BMS firmware, SOC/SOH algorithms, and control loops.
• Coordinate with engineering for design corrections and firmware updates.
• Support warranty, LTSA, and insurance claims with technical evidence.
• Define spare parts strategies and procurement support.
• Provide site-level technical support during outages and upgrades.
• Utilize EMS/PMS/SCADA for predictive diagnostics and life-extension.
• Develop SOPs for diagnostics, safety protocols, and reporting.

Skills

Battery tech

Diagnostics

RCAs

BMS

EMS/PMS

System analysis

Education

Bachelor's or Master's in Electrical Engineering, Power Electronics, or Energy Storage

Tools

SCADA

EMS/PMS

Job description

Job Title: Technical Expert : Battery Energy Storage Systems (BESS)

Department: Global Maintenance Services (GMS) AMEA

Location: Pune, India

Reporting To: Lead GMS AMEA

Role Overview:

The Technical Expert : Battery Energy Storage Systems (BESS) is a senior specialist role responsible for in-depth diagnostics, testing, performance evaluation, and reliability enhancement of utility-scale stand-alone BESS and hybrid (Solar + BESS / Wind + BESS) systems. The role requires 8-10 years of hands-on BESS project analysis, strong expertise in battery technology, power conversion systems, controls, and advanced capabilities in battery testing, degradation assessment, safety engineering, and system-level analysis.

Key Responsibilities:

1. BESS Diagnostics, Repair & Maintenance:

• Lead hands-on fault diagnostics at cell, module, rack, PCS, EMS/PMS, and system levels.
• Perform inspection and repair for battery modules, sensors, racks, contactors, and battery protection systems.
• Conduct thermal imaging, impedance spectroscopy, load testing, and post-repair verification.

2. System-Level Analysis – Stand-Alone & Hybrid BESS:

• Evaluate power dispatch performance, grid interaction, and transient response for stand-alone BESS.
• Analyze hybrid interactions involving inverters, PCS, MPPT, and grid controllers for renewable smoothing and firming.
• Assess renewable variability impact on battery degradation.

3. Battery Technology Expertise & Testing:

• Provide deep technical expertise on Li-ion chemistries: LFP, NMC, NCA, LTO.
• Conduct cell/module cycle testing, capacity testing, stress testing, and degradation profiling.
• Review OEM test reports, UL9540A data, and IEC conformity.

4. BMS & Controls:

• Diagnose BMS firmware and SOC/SOH algorithms.
• Analyze balancing performance, sensor biases, and derating logic.
• Evaluate PCS control loops and EMS algorithms for scheduling and charge control.

5. Root Cause Analysis & OEM Engagement:

• Lead RCAs for thermal events, imbalance, degradation, and PCS failures.
• Prepare detailed RCA reports and corrective/preventive recommendations.
• Coordinate with OEM engineering for design corrections and firmware updates.

6. Warranty, LTSA & Insurance Support:

• Validate warranty claims using cycle count, SOH data, and event logs.
• Provide technical evidence for insurance claims.
• Assess refurbishment vs repowering strategies for aging assets.

7. Spare Parts Strategy & Procurement Support:

• Define critical spare parts strategies for modules, CMUs, relays, sensors, and PCS components.
• Evaluate supplier quality and warranty reliability.

8. Site-Level Technical Support:

• Support site teams during breakdowns, anomalies, and safety events.
• Guide commissioning, upgrades, and critical maintenance.
• Analyze event logs, SCADA, EMS/PMS data, and grid parameters.

9. Monitoring Platforms & Diagnostic Tools:

• Use EMS/PMS/SCADA for predictive diagnostics.
• Detect early degradation signs and recommend life-extension strategies.

10. Cross-Functional Collaboration:

• Work with engineering, digital, and asset management to drive reliability.
• Share insights for design improvements and procurement decisions.

11. Process Standardization & Compliance:

• Develop SOPs for diagnostics, safety protocols, and reporting.
• Ensure compliance with IEEE, IEC, and UL standards.

12. Qualifications & Experience:

• Bachelor's or Master's in Electrical Engineering, Power Electronics, or Energy Storage.
• Minimum 8-10 years of hands-on BESS experience.
• Expertise in battery technology, PCS, BMS, EMS/PMS, and degradation analysis.

13. Key Competencies:

• Battery technology, degradation mechanisms & safety engineering.
• PCS troubleshooting and grid-interaction analysis.
• RCA leadership for battery/PCS/system failures.
• Hybrid system technical expertise.
• Spare-part strategy & lifecycle planning.