Quality Assurance - VoIP
Job Description & How to Apply Below
We are looking for a Senior Test Engineer specializing in mobile audio/video quality assurance for our VoIP product (voice/video calling and real-time communication). You will drive specialized audio/video testing and automation infrastructure, and leverage AI to build testing tools that boost team efficiency.
Responsibilities1. Mobile VoIP Testing
- Own functional testing and quality assurance for mobile VoIP products (iOS/Android).
- Cover:
- 1v1 calls
- Group calls
- Weak-network conditions
- Conduct specialized audio/video testing.
- Perform quantitative evaluation of:
- FPS
- Freeze rate
- Echo
- Other quality metrics
- Establish testing capabilities and quality baselines.
- Design and maintain UI automation frameworks (Appium or similar).
- Increase mobile regression test coverage.
- Build and maintain API automation using Python + pytest/requests (or similar).
- Integrate automated testing into CI/CD pipelines.
Leverage AI (LLMs, agents, AI coding tools) to build testing tools for:
- Other AI-powered testing workflows
- Contribute to:
- Weak-network simulation
- Drive engineering quality improvements.
Experience
- 3+ years of mobile testing experience.
- Hands-on experience with audio/video, VoIP, or RTC products.
Practical experience in specialized audio/video testing, including measurement methods and tools for:
- FPS
- Freeze rate
- Audio/video quality assessment
- ArUco marker-based methods
- Proficient in UI automation (Appium, Airtest, or similar).
- Proficient in API automation (Python + pytest or similar).
- Experience building automation frameworks from scratch.
- Strong Python skills for test tooling.
- Familiar with ADB commands and multi-device management.
- Skilled at using AI for efficiency.
- Demonstrable output using LLMs or AI coding tools (e.g., Claude Code, Copilot) to build test tools or AI-powered testing workflows.
- Able to independently analyze:
- Packet captures
- Audio/video pipeline issues
- Professional working proficiency in English (daily communication and documentation).
- Familiarity with the WebRTC stack.
- Familiarity with audio/video codecs (Opus, H.264/H.265, etc.).
- Experience building weak-network testing platforms or device farms.
- Experience with performance testing and stability testing (Monkey/Fastbot).
- Exploration of cutting-edge directions such as:
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