Intern - Embedded Hardware & IoT Engineer

Intern - Embedded Hardware & IoT Engineer
Location: Gurugram, Haryana, India (On-site)
Department: R&D / Hardware Engineering
Experience Level: Intern
Duration: 6 months

About the Role
We 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 You’ll Work On
1. 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 components
2. 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 pipelines
3. 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 & Qualifications
Must-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 modeling
Non-Technical:
Strong documentation skills (SOPs, test reports, vendor tracking)
Ability to work independently on assembly/QC tasks
Problem-solving mindset for "real-world" field failures
R&D mindset with fast-paced iterations

### Education & Experience
Bachelor’s degree in Electronics, Electrical, Computer Engineering, Embedded Systems, or related field
0-1 years of relevant experience (internship or project-based work accepted)
A strong portfolio showing embedded hardware projects is highly valued