Experienced IoT Hardware and Firmware Developer

I am looking for an experienced IoT hardware and firmware developer to assist in building a prototype system involving wearable devices and a centralized data management system.

Scope of Work:

Implement a working prototype using a microcontroller (ESP32 or similar) with sensors and communication modules (BLE / UWB).

Design and assemble the hardware by integrating:

A small display module.

User input components (buttons, fingerprint sensor, or touch sensors).

Power management system (battery, charging, voltage regulation).

Develop efficient firmware for:

Wireless communication between the wearable device and fixed gateway/anchor system.

Sensor data collection, local processing, and event triggering (button press, sensor reading).

Power optimization to ensure long battery life (target ≥24 hours).

Build a simple server-side application to receive data from the gateway and provide real-time processing (geofencing logic, event confirmation, database storage).

Requirements:

Proven experience in developing IoT prototypes using ESP32 or similar microcontrollers.

Experience with UWB and BLE communication protocols.

Expertise in custom PCB design and integrating multiple sensors in a wearable form factor.

Ability to write clean, efficient, and power-optimized firmware.

Understanding of server-client communication over WiFi or similar networks.

Note:

I will provide the detailed hardware component list. The role is to design and implement the system based on the given components and functional requirements