Embedded Audio Firmware Engineer - Linux/RTOS

Job Description

Description Develop and optimize embedded audio firmware using C/C++, ensuring efficient performance, low power consumption, and real-time audio processing. Work on Bluetooth audio protocols (A2DP, AVRCP, HFP), BLE profiles (HAP, TMAP, HAS, PBP), and audio codec integration (SBC, AAC, aptX, LC3). Collaborate with hardware and systems teams to integrate microphones, speakers, amplifiers, and other peripherals via interfaces such as I2S, UART, and SPI. Minimum Work Experience Required 8+ years of embedded firmware development experience with a focus on audio systems, Bluetooth communication, and low-level hardware integration. Top 5 Skills You Should Possess Strong command of Embedded C/C++, including memory management, real-time programming, and hardware abstraction. 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. Youll Be an Ideal Fit If You Have Experience In : 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. Bonus Points For Experience working with beamforming, multi-microphone array processing, or spatial audio. Familiarity with Bluetooth SIG specifications and standard compliance testing. Exposure to AI/ML-assisted audio processing, such as smart noise reduction or adaptive filtering. Involvement in multimedia or AR/VR hardware platforms (ref:hirist.tech)