Bluetooth PCB Design for Wearable Tech

Bluetooth Wearable Device – PCB Design & Firmware Development (Audio + Noise Cancellation)

Project Overview:
We are seeking an experienced embedded systems engineer or hardware/firmware design specialist to develop a Bluetooth-based wearable device with audio capabilities, including microphone input, speaker output, and noise cancellation features.

This is a hardware + firmware development project. The ideal candidate should have a strong background in Bluetooth audio systems, wearable product design, and low-power embedded development.

Core Requirements:
1. PCB Design

Design a compact, production-ready Bluetooth PCB for a wearable form factor (ear-hook, clip-on, or similar)

RF layout optimization for stable Bluetooth connectivity

Integration of audio components: microphone, speaker driver, optional ANC mic

Use of proven SoC like Airoha ATS3019E, Qualcomm QCC series, Bluetrum, or JieLi

2. Firmware Development

Implement Bluetooth communication (Classic and/or BLE)

Enable audio streaming, microphone capture, and speaker output

Support for TWS mode (optional)

Implement noise cancellation algorithms (feedforward ANC or ENC)

Power management for wearable usage

Deliverables:
Complete schematic and PCB layout files (e.g., Altium, KiCad, or Eagle)

Gerber files, BOM, and manufacturing-ready output

Firmware source code (C or C++), with proper documentation and build instructions

Basic test and debug support during prototyping

Optional: 3D model and enclosure fitment considerations

Ideal Candidate Has:
3+ years in Bluetooth and audio hardware design

Experience with Bluetooth SoCs (Airoha, Qualcomm, Actions, etc.)

Strong understanding of analog/digital audio circuits

Hands-on experience with ANC / ENC / DSP techniques

Familiarity with Bluetooth audio profiles (A2DP, HFP, HSP)

Ability to deliver production-grade firmware