Firmware Engineer - Embedded Audio Software

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).

(ref : hirist.tech)