Battery Management Systems Engineer

About the Role:We are building a next-generation electric vehicle platform at SINA Mobility, focusing on efficient battery systems, robust BMS architecture, and integrated vehicle charging solutions. We’re looking for a passionate Battery & BMS Development Engineer to lead end-to-end design, testing, and validation of lithium-ion battery packs and charging subsystems. This is a full time opportunity, 1st 5 months would be on probation with salary limited upto 15k/ month. The full time hiring would be decided post the completion of probation period(depending on the performance). The interested candidate should have the below mentioned skills Key Responsibilities:Battery Pack DevelopmentDesign, size, and develop lithium-ion battery packs (NMC/LFP cells) for two-wheeler or light EV applications.Perform cell selection, configuration (series/parallel), and pack architecture based on voltage/current targets.Design battery enclosures considering thermal management, mechanical integrity, and safety standards (AIS-156, IP67, etc.).Develop wiring harnesses, interconnects, bus bars, and fuses.Battery Management System (BMS)Work on BMS hardware and software architecture — including cell balancing, SOC/SOH estimation, protection logic, and CAN communication.Interface with suppliers or develop in-house custom BMS firmware.Integrate BMS with vehicle controller and telemetry systems.Validate and calibrate sensors (voltage, current, temperature).Develop charge safety, cut-off, and protection circuitry.Below mentioned aren't required, but can increase the chances.Charging System IntegrationKnowledge about design of on-board charger (OBC) and DC fast charging interface as per relevant standards (IEC 62196, CHAdeMO, Bharat DC001, etc.).Work with external vendors for charger–vehicle handshake protocols (CAN, PWM, PLC).Testing & ValidationConduct performance, durability, and abuse tests (short circuit, overcharge, thermal runaway).Coordinate validation at NABL labs for AIS-156, AIS-038 Rev 2 compliance.Analyze battery pack data for degradation, efficiency, and cycle life improvements.Documentation & Cross-Functional WorkPrepare schematics, test reports, and BOMs.Support vehicle integration, mechanical design, and homologation teams.Manage supplier evaluation and sourcing for cells, BMS PCBs, and charging components.Key skills required:1–6 years in EV battery development, preferably with 2W/3W/LCV manufacturers or Tier-1 suppliers (college projects would also be considered)Should have core knowledge in Lithium-ion cell chemistry (LFP/NMC), pack design, battery modeling, thermal management.Knowledge about tools/ software like Altium / KiCAD / MATLAB / Simulink / LTspice / CANalyzer. Good understanding of materials & ability to learn new techniques faster.Have their own vehicle to commute between office, factory & suppliers.Nice-to-have: Experience in battery simulation, BMS firmware (C/C++), and charging protocol integration.Job location is Peenya, Bangalore.Salary payment would be upto 15000/month, for 5 months. Salary for full time would be decided post probation completion.Interested candidates can mail their resumes to info@sinamobility.com