Intern - Embedded Hardware & Io T Engineer

Location: Gurugram, Haryana, India (In office)

Department: R&D; / Hardware Engineering

Experience Level: Intern

Duration: 6 months

About The Role
We are seeking a hands-on Embedded Hardware & Io T 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 Io T systems, including:

Modbus RTU (RS485) sensors

BLE (Bluetooth) telemetry

Lo Ra WAN gateways (Dragino, RAK)

MQTT/Cloud pipelines (EMQX, Rabbit MQ)

This is not a theoretical role. You will debug broken PCBs, refine battery algorithms, test Lo Ra gateways, assemble pilot units, and freeze production firmware.

What You’ll Work On
- 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
- Communication Protocols & Io T Integration





Implement and test Modbus RTU over RS485 (baud rate, slave ID, register maps)

Integrate RS485 sensors with 3 G/4 G industrial gateways , Lo Ra nodes , etc.

Configure MQTT brokers to ingest sensor data and publish to Io T clouds

Develop scripts for sensor to dashboard pipelines
- 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, Raspberry Pi, 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

📌 Intern - embedded hardware & iot engineer (Faridabad)
🏢 JobCrexa
📍 Faridabad