Embedded Hardware / Firmware Engineer (Prototype Developer)

About the Role
We are looking for an Embedded Hardware & Firmware Engineer to develop a hardware prototype (MVP) for a sport/fitness device.
This role requires a hands-on engineer who can independently build a working prototype from scratch — from component selection and wiring to firmware and BLE communication.

Responsibilities

• Design and build an MVP prototype independently
• Select microcontroller and sensors (ESP32 / STM32 / nRF52 or similar)
• Develop firmware in C/C++
• Implement Bluetooth Low Energy (BLE) communication
• Assemble, solder, debug and test prototype electronics
• Optimize power consumption for battery-powered operation
• Iterate quickly and deliver a working demo device

Requirements

• Strong embedded C/C++ experience
• Practical experience with ESP32 / STM32 / nRF52
• Ability to work with sensors, ADC, interrupts, timers
• Solid electronics background (schematics, components, soldering)
• Proven ability to build complete prototypes independently
• Strong debugging skills (oscilloscope / logic analyzer is a plus)

Nice to Have

• BLE GATT profile design
• PCB design (KiCad / Altium)
• Low-power IoT experience
• 3D printing / enclosure prototyping

How to Apply
Send your CV + examples of real hardware you built (photos, videos, GitHub).