Job Description

Job Title: Senior Engineer – BESS Battery Pack Electrical Design

Location: Bangalore

Job Type: Full time

Experience: 4+ years

About the Role

We are looking for a Senior Engineer with strong hands-on experience in electrical design of Lithium-ion battery packs, preferably for BESS / Energy Storage applications.

The role will primarily focus on battery pack electrical architecture and design, including cell configuration, pack sizing, HV electrical systems, busbars, contactors, fuses, pre-charge circuits, BMS integration, and electrical protection.

The role will also involve supporting battery pack testing and validation to ensure the design meets performance, safety, and reliability requirements.

Key requirement: Candidates must have hands-on experience in electrical design of battery packs. Candidates whose experience is primarily mechanical pack design, enclosure/CAD design, thermal design, BMS testing, or battery testing will not be preferred.

Key Responsibilities

Electrical Battery Pack Design – 70%




- Design and develop electrical architecture of Lithium-ion battery packs for BESS applications.
- Develop cell configuration, series/parallel architecture, pack voltage, capacity and power calculations.
- Design and size busbars and electrical interconnections based on current, voltage and thermal requirements.
- Design/integrate HV systems, contactors, fuses, pre-charge circuits, HVIL, connectors and protection circuits.
- Integrate BMS, CAN communication, cell monitoring, balancing and protection logic.
- Select appropriate LFP/NMC cells and electrical components based on application requirements.
- Prepare electrical schematics, wiring diagrams, BOMs and design specifications.
- Work with suppliers on cells, BMS, contactors, fuses, connectors and other electrical components.
- Participate in DFMEA and electrical safety/design reviews.
- Work closely with mechanical and thermal teams to ensure complete pack-level integration.

Battery Tes

📌 Senior Engineer BESS Battery Pack Electrical Design (Bengaluru)
🏢 HireFlexperts
📍 Bengaluru