Senior Design Engineer – Thermal & Cooling Systems (BESS)

Location: Bengaluru, India

Experience: 8–12 Years

Function: BESS Product Engineering – Thermal Systems

About The Role

We are looking for a Senior Design Engineer – Thermal & Cooling Systems to design, develop, and validate thermal management solutions for utility?scale and commercial & industrial (C&I;) Battery Energy Storage Systems (BESS). He will be Part of BESS system Engineer and responsible for designing and optimizing the thermal management systems.

This role focuses on end?to?end thermal system design, Heat Loss Calculation, ensuring secure operation, high reliability, optimal battery life, and compliance with stationary energy storage requirements. You will work closely with battery, enclosure, CFD, electrical, and system teams to deliver robust cooling architectures suitable for long?duration, high?power stationary storage applications.

Key Responsibilities

Thermal Architecture & System Design

Design and own thermal management architectures for battery racks, modules, and containers.
Heat Loss Calculation




Define cooling strategies for utility?scale and C&I; BESS, considering:
Environmental extremes
Long?duration operation
Maintainability and serviceability
System Design & Sizing: Design HVAC or liquid cooling systems tailored for BESS, including heat load calculations, system sizing, and equipment selection.
Select and size thermal components including:
Air and/or liquid cooling systems
Heat exchangers, chillers, pumps, fans, ducting
Develop thermal concepts aligned with system cost, reliability, and scalability goals.
Hands on Experience with Simulations tools like ANSYS / SIMcenter etc..
Battery Thermal Management

Ensure battery operation within defined thermal limits for:
Safety
Performance
Cycle and calendar life
Define thermal interfaces between:
Battery cells/modules
Cooling systems
Mechanical enclosures
Support thermal derating strategies in coordination with BMS and system controls tea

📌 Senior Thermal and Cooling Designer BESS (Bengaluru)
🏢 Larsen and Toubro
📍 Bengaluru