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Battery & BMS Validation Engineer

CYGNI
Telangana

Quick apply

Job details

Qualifications

TCP
Electronics Engineering
Bachelor's degree
Embedded software
BMS
Data analytics
HVAC design
B.E.
Python

Full job description

Battery & BMS Validation Engineer – Application Engineering

Location: Maheshwaram, Hyderabad

Employment type: FULL – TIME

Position Reports to Lead – Application Engineering

“If everything seems under control, you are not going fast enough!”

At Cygni Energy, our people are our greatest asset and biggest differentiator. They are passionate about results, and also believe in having a lot of fun along the way. Join Us.

We’ve already touched 10+ Million Lives across 1100+ towns and many villages, 75+ MWh of Energy Storage,

Our Business: Cygni Energy is a Next-Generation Energy Storage Company and Defines the Future of Energy Storage across Key Verticals. At Cygni, we are rethinking energy with game changing battery technologies. Each battery application have different needs and requires different solutions. We believe our Energy Storage Systems will be a key part of the future of electric grid. It has the choicest of corporate and government clients, all delighted with offerings and services. Client reach out to us for Electric Vehicles (2 Wheelers and 3 Wheelers) Smart BMS controlled Batteries and Rooftop Solar Hybrid Solutions.

The most successful employees at CYGNI are results-driven and able to continuously adapt to an ever-changing environment. They not only work well in our environment but also have the drive to succeed when they are on their own. A strong focus on fairness and honesty with a humble attitude is what defines our top performers. Is that you? Currently, CYGNI seeks your application for Engineer – Application Engineering for earliest joining.

Location: Maheshwaram, Hyderabad (TS)

Location: Maheshwaram, Hyderabad

Key Responsibilities –

1. Battery & BMS Validation

- Perform testing, validation, and characterization of Li-ion and Na-ion battery packs.
- Execute BMS functional testing, including protection, alarms, thermal control, cell balancing, and SOC/SOH accuracy performance.
- Conduct end-to-end validation of battery packs as per internal and customer test plans.
- Analyse cell/battery test data (charge–discharge cycles, cycle life, temperature behavior).

2. ESS/BESS & Container-level System Integration

- Lead functional validation of ESS/BESS systems including PCS interface, EMS communication, and safety interlocks.
- Participate in container-level integration: HVAC, fire suppression, isolation monitoring, HV distribution, and system controls.
- Support FAT/SAT for energy storage systems and site-level commissioning.

3. Communication Protocols & System Interface

- Configure and validate communication between BMS and EMS/Supervisory Controllers using:
- CAN
- Modbus RTU/TCP
- Proprietary BMS communication protocols
- Debug communication issues, message mapping, and DBC handling.

4. High Voltage System Integration

- Work with HV Junction Boxes, pre-charge circuits, contactors, fuses, HVIL, and safety relays.
- Validate insulation resistance, grounding architecture, and safety logic implementation.
- Support system integration with PCS/inverters and third-party equipment.

5. Documentation & Compliance

- Prepare detailed test reports, failure analysis documents, and validation summaries.
- Ensure compliance with IEC, UL, and other safety standards relevant to battery systems.
- Support engineering change management, BOM reviews, and design validation cycles.

6. Cross-team Support

- Provide technical support to application engineering, field deployment, and customer teams.
- Collaborate with design, firmware, and testing teams to close validation gaps.
- Participate in root cause analysis (RCA) and issue closure for field or lab failures.

Required Skill Set

Core Technical Skills

Strong knowledge of Lithium-ion & Sodium-ion chemistry, battery behavior, and safety mechanisms.
Deep understanding of:
- Battery Pack architecture
- BMS architecture (Hardware + Firmware)
- SOC/SOH algorithms
- Cell balancing strategies (Passive/Active)
Hands-on experience with:
- Battery testers (Arbin, Neware, Re-Power etc.)
- Environmental chambers
- HV test equipment (IR tester, HiPot, Oscilloscope)
Experience on ESS/BESS integration, containerization, HVAC systems, safety systems.
Strong command over CAN, Modbus, DBC decoding, and protocol debugging.

Software & Tools

CAN analyzers (Vector CANalyzer/CANoe, Kvaser, Peak).
Data analytics tools (Excel, Python basics preferred).
Familiarity with EMS/PCS interfaces is a plus.

Qualification & Experience

- You have B Tech/BE in Electrical/Electronic engineering or comparable study paths
- You must have 3-5 years of experience

Quick apply

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