Audio Product Development Engineer (DSP)

TL;DR

Audio Product Development Engineer (DSP): Port, integrate, and validate audio DSP algorithms (e.g., noise reduction, beamforming, AEC, EQ, ANC) from reference platforms to target chipsets/OS/SDKs with an accent on fixed-/floating-point behavior, real-time robustness, and mass-production readiness. Focus on system-level audio sihirify.globalal-chain integration, low-level DSP firmware debugging, and building calibration/measurement and automated test tooling.

Location: Xiamen, hirify.globalAC

Company

hirify.global develops audio products and related technologies for headsets.

What you will do

• Port, integrate, and optimize audio DSP algorithms to target platforms, embedding them into the headset firmware stack with correct interfaces, data flow, and control mechanisms.
• Integrate target platform DSP/HW modules into the end-to-end audio sihirify.globalal chain using platform audio peripherals and hardware abstraction layers.
• Develop and run test plans to verify individual DSP blocks and the complete audio sihirify.globalal chain, including regression testing for new changes.
• Perform low-level debugging and root-cause analysis for audio anomalies across DSP firmware, hardware registers, memory, and real-time execution flow; use logs/recordings and create diahirify.globalostic FW builds when needed.
• Build factory calibration routines and internal tools/scripts for automated testing, debugging, and performance evaluation during development and manufacturing.
• Document implementations and collaborate with DSP/algorithm, FW/SW, and acoustic engineering teams, including working with vendors for SDK updates and technical support.

Requirements

• BS/MS in Electrical Engineering, Sihirify.globalal Processing, Computer Science, or a related technical field.
• Solid knowledge of core audio DSP concepts (e.g., equalization, FFT, adaptive filters, gain control).
• Experience with MATLAB or Python for sihirify.globalal analysis, verification, and test automation.
• Proficiency in C/C++ for embedded systems.
• Hands-on understanding of fixed-point and floating-point DSP implementations, including performance, memory, and power optimization.
• Experience with hardware-software integration and audio peripherals (ADCs, DACs, I2S/PCM interfaces).
• Experience with Git and modern software development workflows.
• English communication skills for verbal and written collaboration (good working proficiency).

Nice to have

• Hands-on experience with DSP architectures and toolchains (e.g., ARM, Tensilica).
• Experience with multi-mic processing, AEC, noise reduction, or ANC implementations.
• Experience with automated test frameworks and CI for embedded/DSP projects.
• Background in communication headsets/earbuds/speakerphones or similar audio products.

Culture & Benefits

• Full-time role focused on delivering high-quality, real-time audio performance for hirify.global headsets.
• Cross-functional collaboration with algorithm/DSP researchers, FW/SW engineers, and acoustic engineers.
• Emphasis on robustness, reproducibility, and systematic testing and troubleshooting.
• Opportunities to work with platform SDKs/toolchains and vendor technical support.