Intern - Embedded Hardware & IoT Engineer

About the internship

Intern - Embedded Hardware & IoT Engineer Location: Gurugram, Haryana, India (On-site)Department: R&D / Hardware EngineeringExperience Level: InternDuration: 6 months About the RoleWe are seeking a hands-on Embedded Hardware & IoT Engineer who has expertise in component sourcing and circuit debugging to firmware development, Modbus integration, and production assembly support.You will work on real-world agricultural IoT systems, including:

• Modbus RTU (RS485) sensors
• BLE (Bluetooth) telemetry
• LoRaWAN gateways (Dragino, RAK)
• MQTT/Cloud pipelines (EMQX, RabbitMQ)This is not a theoretical role. You will debug broken PCBs, refine battery algorithms, test LoRa gateways, assemble pilot units, and freeze production firmware.

### What Youll Work On1. Embedded Firmware & Hardware Debugging

• Develop & debug firmware for multiple microcontrollers such as ATMEGAxx, ESPxx, etc.
• Fix algorithms for core functionality, communication and power
• Perform PCB functional tests
• Identify and replace faulty components2. Communication Protocols & IoT Integration
• Implement and test Modbus RTU over RS485 (baud rate, slave ID, register maps)
• Integrate RS485 sensors with 3G/4G industrial gateways, LoRa nodes, etc.
• Configure MQTT brokers to ingest sensor data and publish to IoT clouds
• Develop scripts for sensor to dashboard pipelines3. Battery & Power Management
• Conduct comparative analysis of Li-ion cells
• Build accelerated discharge test circuits
• Remote power management including solar power stations
• Manage brownout protection and dual-power restrictions

### Required Skills & QualificationsMust-Have (Technical):

• Microcontrollers: ATmegaxx, ESPxx, RaspberryPi, etc
• Communication Protocols: Modbus RTU, RS485, UART, BLE, MQTT
• Hardware Tools: Oscilloscope/multimeter, logic analyzer, soldering station
• Programming: C/C++ for embedded systems, Arduino IDE, Python
• Debugging: Ability to repair damaged PCBs
• Firmware Management: Algorithm, PCB flashing
• PCB design basics (KiCad/EasyEDA)Good-to-Have:
• LoRaWAN
• Gateway configuration (3G/4G dataloggers, LoRa bridges)
• Mechanical design with CAD
• Regression modelingNon-Technical:
• Strong documentation skills (SOPs, test reports, vendor tracking)