Firmware Audio Engineer

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.

Skills Required

Spi, i2s, Uart, AAC, Embedded C, Performance Optimization, Ble, Audio Codecs, Hap, SBC