Senior Staff Engineer, Audio QA
Senior Staff Engineer, Audio QA
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Job Description
Job Summary:
Vocera is now a part of Stryker. We are seeking an experienced Audio QA Engineer to join our product team developing cuttingedge VoIPenabled wearable technology. In this role you will be responsible for ensuring optimal audio performance and quality for voice communication features performing detailed testing analysis and validation of audio pathways in various environments and network conditions.
You will collaborate closely with hardware firmware and software teams to develop test plans automate audio test cases and validate audio performance across the product lifecycle.
Key Responsibilities:
- Designed and executed comprehensive audio quality test plans for VoIP features on wearable devices.
- Validate microphone and speaker audio paths codecs echo cancellation noise suppression and voice clarity.
- Conduct MOS (Mean Opinion Score) testing and other subjective and objective audio quality assessments.
- Test audio performance in various realworld and lab conditions (e.g. network types ambient noise environments device orientations).
- Use test tools and frameworks to capture analyze and log audio signals (e.g. latency jitter packet loss dropouts).
- Conduct wakeword testing for voice assistant features and assess responsiveness and false trigger rates.
- Perform product benchmarking and ensure compliance with audio standards (e.g. TIA920B).
- Collaborate with software firmware hardware and UX teams to troubleshoot and isolate audio defects.
- Document test cases test results defects and contribute to product release signoff.
- Contribute to the automation of audio tests wherever applicable.
Required Skills & Qualifications:
- Bachelors degree in Electronics and Communications DSP Electrical Computer Engineering Acoustics or a related field.
- 8 years of experience in audio QA testing preferably for VoIP telephony or wearable products.
- Prior experience with audio performance measurement tools such as:
- Audio Precision (APx)
- Listen SoundCheck
- ACQUA
- HATS (Head and Torso Simulator)
- Handson experience with tools like:
- Wireshark (for packet capture and VoIP call analysis)
- Adobe Audition sox Audacity or similar for waveform analysis
- Experience with MOS testing (POLQA PESQ) subjective audio quality testing and scripting.
- Experience with product compliance testing for standards like TIA920 B.
- Familiarity with mobile and embedded platforms (Android iOS RTOS) is a plus.
- Excellent troubleshooting skills attention to detail and communication skills.
Nice to Have:
- Experience with noisecanceling algorithms (ANC ENC beamforming) testing.
- Experience testing Bluetooth and wireless audio (BLE Classic BT WiFi).
- Experience with wake word testing and voice UI systems (e.g. Alexa Google Assistant Siri).
- Prior work with wearable audio devices such as smart headsets earbuds or AR/VR headsets.
- Solid understanding of VoIP protocols (SIP RTP RTCP) audio codecs (e.g. Opus G.711 G.722) and related networking concepts.
- Exposure to Agile development and CI/CD pipelines for automated testing.
Required Experience:
Staff IC
Employment Type
Full-Time
