{"id":111841,"url":"https://alion.io/job/gn-group-audio-product-development-engineer-dsp","title":"Audio Product Development Engineer - DSP","company":{"id":4595,"name":"GN Group","domain":"gn.com","url":"https://alion.io/company/gn-group","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":90,"open_postings":15,"ghost_share":0,"stale_share":0.6,"repost_share":0,"time_to_fill_p50_days":20,"computed_at":"2026-10-19T05:45:15Z"}},"role":"Hardware","role_family":"Hardware","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Xiamen, China","China"],"countries":["CN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":24000,"max_usd":70000,"period":"year","method":null,"sample_n":3689},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"C++","optional":false},{"name":"Git","optional":false},{"name":"MATLAB","optional":false},{"name":"Python","optional":false},{"name":"CI/CD","optional":true}],"status":"live","first_seen_at":"2026-04-20T00:00:00Z","employer_posted_date":"2026-04-20","last_verified_at":"2026-10-19T18:59:25Z","board_verified":true,"closed_at":null,"days_open":182,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":182},"description":"Ensure high quality audio performance in GN headsets by porting, integrating, and validating audio DSP algorithms from reference platforms to specific target platforms (chipsets/OS/SDKs), securing robust, real time operation in mass produced products. Furthermore, troubleshooting complex audio DSP and platform-related issues, feeding insights back into the product development cycle.\nKey Responsibilities\n Algorithm porting, integration, and optimization to the target platforms.Port existing audio DSP algorithms (e.g., Noise reduction, Beamforming, AEC, EQ, ANC) from reference implementations to the specific target platforms.\nEmbed the ported algorithm into the existing FW stack of the target platform, including defined interfaces, data flow, and control mechanism for seamless operation of headset’s overall system.\nAdapt and optimize code to target SDKs, toolchains, and audio frameworks while maintaining algorithm behavior and performance.Handle fixed-point and floating-point implementations, data formats, and platform-specific constraints.\n\n Integrate DSP/HW modules of target platforms into overall audio signal chainUnderstand the flow of audio data from transducers through various DSP blocks and out to the speakers and transmission channels.\nWork with the platform’s specific hardware abstraction layer or audio peripherals (ADCs, DACs, I2S/PCM interfaces, transducers).\n\nValidation and verification of the ported algorithms and integrated modules.Develop and execute comprehensive test plans to verify the functionality and performance of individual DSP blocks and the complete audio signal chain.\nRegression test - ensure new changes or optimizations do not compromise the existing functionality.\n\nDebugging & problem solvingPerform low level debugging using debuggers, emulators, and specialized tools to diagnose issues within the DSP firmware, hardware registers, memory, and real time execution flow.\nIdentify root causes of audio anomalies or unexpected behaviors that might be caused by DSP algorithms, hardware interactions, OS scheduling, or interference.\nAnalyze field logs, audio recordings, and reported symptoms, then potentially developed specific diagnostic tools or FW builds for field testing. At the end, provide timely resolution and implement robust fixes.\n\nAudio system calibration and measurement tool developmentDevelop and implement FW or SW routines for factory calibration of transducers and other audio components to compensate unit-to-unit variation.\nCreate internal tools or scripts for automated testing, debugging, and performance evaluation during development and manufacturing.\n\nDocumentation & maintenanceDocument implementation detail, integration interfaces, configuration parameters, and test procedures.\nEnsure well-commented code, modular, and adherence to GN coding standards for future maintenance and scalability.\n\nCross-Functional CollaborationWork closely with Algorithm/DSP researchers, FW/SW engineers, and Acoustic Engineers to ensure the ported implementation matches the intended algorithm design and audio targets.\nEngage with vendors for technical support, SDK updates, bug reporting and leverage platform-specific optimizations.\n\nRequired Qualifications\nBachelor’s or master’s degree in Electrical Engineering, Signal Processing, Computer Science, or related technical fields.\nSolid knowledge of core audio DSP concepts (equalization, FFT, adaptive filters, gain control, etc.).\nExperienced with MATLAB or Python for signal analysis, verification, and test automation.\nProficient in C/C++ development for embedded systems.\nFamiliar in fixed point and floating-point DSP implementation with and understanding of performance, memory, and power optimization techniques.\nUnderstanding of hardware-software integration and interaction with audio peripherals (ADCs, DACs, I2S/PCM interface).\nExperienced with version control (Git) and modern software development workflows.\nPreferred Qualifications\nHands-on experience with various DSP architectures (e.g., ARM, Tensilica, etc.) and their associated toolchains.\nExperienced with:Multi-mic processing, AEC, noise reduction, or ANC implementations.\nAutomated test frameworks and continuous integration for embedded/DSP projects.\n\nHave background in communication headsets, earbuds, speakerphones, or similar audio products.\nKey Competencies\nAbility to perform system level diagnostics and root cause analysis.\nStructured & systematic approach in testing, troubleshooting, data analysis, and documenting work.\nStrong implementation- and detail-oriented mindset with focus on robustness and reproducibility.\nAbility to collaborate effectively with cross-functional, international teams.\nGood verbal and written communication skills in English.\n# Li-Jabra","description_format":"text","description_chars":4767,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[{"language":"English","level":"All levels","optional":true}]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Headphones & Audio","Computer Peripherals","Hearing Care & Audiology"],"lifecycle":[{"event":"open","at":"2026-04-20T00:00:00Z"}],"visa":[],"liveness":{"score":2,"band":"cold","label":"Long shot","p_open":1,"p_active":0.061,"p_room":0.28,"age_days":182,"expected_fill_days":20,"reasons":["conf:0","stale_co","win:tail","crowd:"],"computed_at":"2026-10-19T05:45:15Z"},"pay":null,"html_url":"https://alion.io/job/gn-group-audio-product-development-engineer-dsp","json_url":"https://alion.io/job/gn-group-audio-product-development-engineer-dsp.json","meta":{"generated_at":"2026-10-19T20:29:18Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and 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