- Deep understanding of Bluetooth architecture, audio profiles (A2DP, AVRCP, HFP), BLE features (HAP, TMAP, HAS), and advanced Bluetooth technologies like Angle of Arrival (AoA) and Angle of Departure (AoD).

- Hands-on experience with audio codecs : SBC, AAC, aptX, and LC3.

- Familiarity with noise reduction techniques such as ENC (Environmental Noise Cancellation) and ANC (Active Noise Cancellation).

- Proficiency with tools and methods for debugging, testing, and performance optimization of embedded systems.

- Working with embedded Linux or RTOS-based environments.

- Integrating Bluetooth stacks from Nordic (nRF52), Qualcomm (CSR), or Broadcom chipsets.

- Handling audio streaming, buffer management, latency reduction, and audio quality assurance.

- Bluetooth sniffing and traffic analysis using tools like Ellisys, Frontline, or similar.

- Audio quality testing : Evaluating latency, jitter, and fidelity across Bluetooth audio profiles.

- Power optimization and low-power system design for wearable/portable applications.

- Working in Agile teams, using Git, CI/CD, and writing clear technical documentation and test automation scripts.