Job Description

We are seeking a highly experienced Firmware Engineer with 8+ years of hands-on experience inembedded audio software development, including Bluetooth audio, low-power design, andaudio signal processing. This is a critical role in our hardware-software co-development team,where your expertise will directly impact the performance and user experience of our AR/VR smartglasses and immersive systems.

In this role, you will work on Bluetooth audio protocols, embedded DSP optimization, noisecancellation algorithms, and real-time streaming pipelines, while collaborating closely withhardware, product, and design teams. Your work will drive the core embedded intelligence ofour' next-generation devices.

Top 3 Daily Tasks Develop and optimize embedded audio firmware using C/C++, ensuring efficientperformance, 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.

Full-Stack AwarenessWhile your primary focus will be firmware and embedded systems, awareness of system-levelsoftware integration, cloud/BLE connectivity, and app-level coordination will be a plus indelivering robust end-to-end solutions.

Must haves- Strong command of Embedded C/C++, including memory management, real-timeprogramming, and hardware abstraction. Deep understanding of Bluetooth architecture, audio profiles (A2DP, AVRCP, HFP), BLEfeatures (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 NoiseCancellation) and ANC (Active Noise Cancellation). Proficiency with tools and methods for debugging, testing, and performance optimizationof embedded systems.

Nice to haves- Working with embedded Linux or RTOS-based environments. Integrating Bluetooth stacks from Nordic (nRF52), Qualcomm (CSR), or Broadcomchipsets. Handling audio streaming, buffer management, latency reduction, and audio qualityassurance.

We need someone who can join in 20 days max 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 andtest automation scripts.