Senior BESS Engineer

Mahindra Teqo; Thane; On-site; INR 2,500,000 - 4,000,000; Full time

Job summary

Mahindra Teqo is seeking a Senior BESS Engineer to lead the technical design and integration of utility-scale battery energy storage systems and Solar + Storage projects in India. You will drive engineering deliverables, coordinate with OEMs and consultants, and provide technical leadership through design, commissioning, and handover.

You will apply deep expertise in battery technologies, grid studies, EMS/BMS architecture, and fast-changing project execution to deliver safe, reliable, and

Qualifications

• Experience leading conceptual, FEED and detailed engineering for utility-scale BESS projects.
• Expertise across battery chemistries and system sizing for energy arbitrage, peak shaving, frequency regulation, and ancillary services.
• Strong knowledge of grid interconnection, protection philosophy, and SCADA/EMS/BMS integration.
• Experience evaluating OEM solutions, degradation, warranties, and lifecycle performance.
• Familiarity with standards such as IEC/IEEE/NFPA and knowledge of safety reviews and risk assessments.

Responsibilities

• Lead BESS project engineering and design for utility-scale installations.
• Assess and select battery technologies and OEM solutions.
• Develop SLDs, protection philosophies, and electrical layouts; coordinate grid interconnection.
• Oversee EMS/BMS/SCADA integration and communication architectures (IEC 61850, Modbus, DNP3, OPC-UA).
• Support commissioning, FAT/SAT, and performance validation with root-cause analysis.

Skills

BESS engineering

Battery technologies

Grid integration

EMS/BMS architecture

Project execution

Tools

IEC 61850

IEC 60870-5-104

Modbus RTU/TCP

DNP3

OPC-UA

Job description

Position Summary

We are seeking a highly motivated Senior BESS Engineer with 58 years of experience in Battery Energy Storage System (BESS) engineering, design, and project execution. The candidate will lead the technical design and integration of utility-scale BESS and Solar + Storage projects, support technology selection, manage engineering deliverables, coordinate with OEMs and consultants, and provide technical leadership throughout project development, detailed engineering, commissioning, and handover.

The ideal candidate should possess strong expertise in battery technologies, power system studies, grid integration, EMS/BMS architecture, and utility-scale project execution.

Key Responsibilities

BESS Project Engineering & Design

• Lead conceptual, FEED, and detailed engineering for utility-scale BESS projects.
• Perform BESS sizing and optimization based on:
• Energy arbitrage
• Peak shaving
• Frequency regulation
• Ancillary services
• Renewable energy firming
• Capacity market requirements
• Develop system architecture and technical specifications.
• Review battery augmentation strategies and lifecycle performance.

Technology Assessment & System Selection

• Evaluate battery technologies including:
• Lithium Iron Phosphate (LFP)
• NMC
• Sodium-Ion
• Flow Battery Technologies
• Perform technical and commercial comparison of BESS OEM solutions.
• Assess battery degradation, warranty terms, cycle life, and round-trip efficiency.
• Support EPC and developer bids through technology recommendations.

Electrical Engineering & Grid Integration

• Develop and review:
• Single Line Diagrams (SLDs)
• Protection Philosophy
• AC/DC Schematics
• Cable Schedules
• Earthing Layouts
• Auxiliary Power Systems
• Coordinate grid interconnection requirements with utilities, STU, CTU, and transmission operators.
• Review power system studies:
• Load Flow Analysis
• Short Circuit Studies
• Dynamic Stability Studies
• Harmonic Analysis
• Arc Flash Studies
• Grid Code Compliance Studies

EMS, SCADA & Controls Integration

• Lead integration of:
• EMS (Energy Management System)
• BMS (Battery Management System)
• PPC (Plant Power Controller)
• SCADA Systems
• Utility Telemetry Systems
• Define communication architecture and control philosophy.
• Ensure interoperability using:
• IEC 61850
• IEC 60870-5-104
• Modbus RTU/TCP
• DNP3
• OPC-UA

Safety, Compliance & Risk Assessment

• Ensure compliance with:
• IEC Standards
• IEEE Standards
• NFPA 855
• UL 9540
• UL 9540A
• CEA Guidelines
• Local Grid Codes
• Participate in:
• HAZOP Studies
• FMEA Reviews
• Fire Risk Assessments
• Safety Audits
• Review thermal management and fire suppression systems.

Vendor Management & Technical Due Diligence

• Lead technical discussions with OEMs, EPC contractors, consultants, and clients.
• Conduct technical due diligence for BESS investments and acquisitions.
• Evaluate supplier documentation and guarantee parameters.
• Review Factory Acceptance Test (FAT) protocols and technical submittals.

Commissioning & Performance Validation

• Support:
• FAT
• SAT
• Commissioning Activities
• Grid Synchronization
• Performance Acceptance Testing
• Analyze operational data and identify opportunities for optimization.
• Support warranty claims and root cause analysis of operational issues.