Junior Embedded Engineer Intern

Role overview
As an intern, you’ll work with our R&D engineers on the embedded hardware and firmware behind our battery packs and BESS products. This is hands-on work. You’ll write code that runs on real hardware, debug on the bench and see your work go into products.

Key responsibilities

• Develop and debug firmware in Embedded C/C++ on microcontrollers such as STM32, ESP32 and AVR.
• Interface BMS boards with chargers, inverters, displays and IoT modules over CAN, RS485/Modbus, UART, I2C and SPI.
• Read, decode and log BMS data, including cell voltages, temperatures, SoC/SoH, alarms and protection events.
• Build test jigs and scripts (Python or similar) for pack testing, data logging and end-of-line checks.
• Help with IoT and telematics integration (GSM/4G, Wi-Fi, BLE, MQTT) for remote battery monitoring.
• Assist with schematic review, prototyping, soldering and bench testing using a multimeter, oscilloscope, DC load and power supply.
• Document firmware, test procedures and results clearly.

Required skills

• B.Tech/B.E. or Diploma (final year or recent graduate) in ECE, EE, EEE, Instrumentation or a related field.
• Strong basics in Embedded C and microcontroller architecture.
• Hands-on experience with at least one MCU platform (STM32, ESP32, Arduino, PIC, etc.).
• Understanding of serial protocols: UART, I2C, SPI.
• Ability to read datasheets and schematics.
• Basic electronics: power supplies, ADCs, sensors, MOSFETs.

Good to have

• Experience with CAN bus or Modbus RTU.
• Exposure to lithium battery chemistry (LFP/NMC), BMS concepts, cell balancing or SoC estimation.
• Python for data analysis or test automation.
• RTOS (FreeRTOS) basics.
• PCB design tools (KiCad, Altium, EasyEDA).
• Git and version control.
• Personal or college projects in EV, solar, battery or IoT.

Stipend: [₹20000 / month]
Start date: Immediate
Duration: 6 months, with a possible pre-placement offer (PPO)