Firmware Engineer

4 weeks ago

Thane, India Qode.world Jobs Full time

We are seeking a highly experienced Firmware Engineer with 8+ years of hands-on experience in embedded audio software development, including Bluetooth audio, low-power design, and audio 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 smart glasses and immersive systems.


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


Top 3 Daily Tasks :


- 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.


- Full-Stack Awareness : While your primary focus will be firmware and embedded systems, awareness of system-level software integration, cloud/BLE connectivity, and app-level coordination will be a plus in delivering robust end-to-end Have :


- 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 To Have :


- 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.


(ref:hirist.tech)

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