Microcontroller Intern

What you’ll do

Build and test firmware on ESP32-class boards (we use the ESP32-S3) for our aircon and energy-monitoring devices

Work with MQTT end to end: publishing device state, handling control commands, and making connections stable and reconnect cleanly

Help add secure connections (TLS on port 8883) so device data can travel safely beyond the home network

Integrate energy sensing, such as CT clamps for aircon power, and check readings against real loads

Bench-test devices on real aircon units. Log results and write clear handoff notes for the software team

Help with compliance basics like IMDA registration and safety requirements, so what we build can legally go into homes

Support field installs and fix device problems in real homes

What we’re looking for

Studying Mechatronics, Electrical/Electronic, Computer Engineering or similar (poly or uni)

Hands-on experience with Arduino, ESP32 or another microcontroller, in C/C++ or MicroPython

Comfortable with basic circuits, sensors and serial protocols (UART, I²C, SPI)

Bonus: MQTT, Wi-Fi networking, Python, Home Assistant or ESPHome, or PCB design

You like taking things apart, testing them on a bench, and owning a problem until it works

Why join

Your work goes into real homes, not a school demo

Small team, so you work straight with the founders

You see the whole chain from device to broker to database to app

You help Singapore cut household energy waste, one flat at a time