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
our' 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 solutions.
Must haves-
● 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.
Nice to haves-
● 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.
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 and
test automation scripts.
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