Senior Firmware Engineer

Namaskaram!

AjnaLens is looking for an Audio DSP Engineer to join our Product Engineering team. This is a high-impact role for an experienced audio engineering professional who will work on real-time audio systems for next-generation smart glasses, wearables, and consumer electronics.

The ideal candidate should have 5+ years of hands-on experience in Audio DSP and Embedded Audio, with strong expertise in digital signal processing, multi-microphone systems, acoustic tuning, and real-time audio algorithm implementation.

Top 3 Daily Responsibilities
Develop and optimize real-time Audio DSP algorithms for embedded platforms, including AEC, ANC, Noise Reduction/ENC, Beamforming, AGC, VAD, EQ, and Speech Enhancement.
Design and tune multi-microphone audio pipelines for voice calls, recording, ASR, and media applications.
Optimize and debug audio systems for latency, CPU/MIPS, memory, power consumption, audio quality, and production reliability.

Minimum Work Experience Required
5+ years of hands-on experience in Audio DSP / Embedded Audio development.
Strong experience developing real-time audio solutions for consumer electronics, wearables, hearables, headphones, smart speakers, AR/VR devices, or similar products.
Experience implementing DSP algorithms on embedded MCU/DSP/SoC platforms.
Bachelor's or Master's degree in Electronics, Signal Processing, Electrical Engineering, or a related field.

Top 5 Skills You Should Possess
Strong knowledge of DSP fundamentals, including FFT/DFT, FIR/IIR filters, adaptive filtering, sampling, resampling, and time/frequency-domain processing.
Strong programming expertise in C/C++ for real-time embedded audio systems.
Hands-on experience with AEC, ANC, Beamforming, Noise Suppression, AGC, VAD, or Speech Enhancement.
Strong understanding of microphones, speakers, ADC/DAC, amplifiers, audio buffering, synchronization, and latency.
Experience with RTOS, DMA, interrupts, and real-time embedded system development.

Leadership & Strategic Capabilities
Ability to independently own audio DSP features from algorithm development through tuning, validation, and production deployment.
Strong debugging and root-cause-analysis capabilities across firmware, DSP, hardware, and acoustic systems.
Ability to collaborate effectively with hardware, firmware, mechanical, acoustics, AI/ML, and product teams.
Strong technical communication and documentation skills.

Bonus Points For
Direct experience building smart glasses, TWS earbuds, hearables, headphones, AR/VR, or wearable products.
Experience with Qualcomm, BES, MediaTek, Cadence/Tensilica HiFi, CEVA, TI, NXP, or similar audio platforms.
Experience with Bluetooth Classic and LE Audio.
Exposure to wake-word detection and ASR front-end processing.
Experience with MEMS microphone characterization and multi-microphone tuning.
Hands-on experience with MATLAB/Python for audio analysis and algorithm development.
Familiarity with tools such as Audio Precision, HEAD acoustics, REW, oscilloscopes, and logic analyzers.

Education
Bachelor's or Master's degree in Electronics, Electrical Engineering, Signal Processing, Embedded Systems, or a related field.
Strong equivalent hands-on experience in embedded audio and DSP development is highly valued.

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