Senior QA Automation Engineer

Job description

Introduction Ling is a language learning app with 2M+ learners across 70+ languages. Our engineering team is small, and we test alongside development rather than at the end. We already use Maestro, Bruno, AI code-review agents, and nightly AI-driven chaos testing. We want someone to take our automation and AI-driven testing to the next level. You'll own the automation roadmap, automate what is still manual, and help engineers take greater ownership of testing. We're looking for a hands-on builder who uses AI tooling daily and turns new ideas into reliable workflows. This is a senior IC role with mentorship responsibility for two QA engineers, with potential to grow into QA leadership as the team expands. Roughly 60% of the role is automation and tooling; 40% is hands-on testing and release sign-off. Expectations and Outcomes Your year-one priorities There is a lot we could automate, but these are the areas we expect you to focus on first: Build AI-driven testing into the engineering workflow - develop and maintain Claude routines, MCP-based device automation, and agents that identify what needs testing based on code changes and tickets. Build out mobile automation - own and expand our Maestro coverage across iOS and Android, prioritizing the most important user journeys and regression risks. Make API testing part of the development workflow - expand Bruno coverage and run the relevant API tests automatically in CI on every merge. Improve our feedback loop from production to tests - triage production issues, identify the missing coverage, and turn real-world failures into regression tests. Chaos testing, exploratory testing, release coverage, and continuous improvement of the broader QA stack remain important parts of the role. Responsibilities Automation and tooling Own and grow the Maestro test suite across iOS and Android. Extend API test coverage in Bruno and integrate it into CI. Build and maintain AI-driven testing workflows using Claude, MCP device automation, and tools such as Maestro MCP, Agent Device, and Argent MCP. Build agents that compare code changes against tickets and flag what needs testing. Keep nightly AI-driven chaos testing running and make it better, including video capture and reporting back into tickets. Decide what should be automated next, prioritize it based on risk and value, and make the case to the team. Evaluate new AI and testing tools as the ecosystem evolves and bring useful ones into the team's workflow. Testing and releases Perform hands-on testing of new features, edge cases, and exploratory scenarios. Own release regression and smoke coverage across iOS and Android. Test in-app purchases and subscriptions on the App Store and Google Play. Triage production issues using Firebase Crashlytics, Bugsnag, and related diagnostics, then add regression coverage for the underlying issue. Read specs and designs early and give feedback before code exists. Verify feature flags and Firebase Remote Config rollouts, including A/B variants. Use Firebase Test Lab and other device-testing infrastructure where appropriate. Balance automation with targeted manual testing where human judgment adds the most value. Team Mentor the two QA engineers on automation, scripting, and AI tooling, including regular pairing sessions. Run knowledge-sharing sessions and keep testing documentation current. Help move the team from manual-first testing toward an automation-first mindset. Work with engineers to make testing part of their development process rather than something QA handles at the end. Requirements 4+ years of hands-on QA experience , including significant experience testing mobile applications. Strong hands-on experience testing both iOS and Android . Experience building and maintaining automated tests used by a real engineering team. Strong experience with mobile automation, ideally including Maestro . Experience with API test automation, ideally including Bruno . Experience with CI/CD pipelines and integrating automated tests into development workflows. Experience with AI-assisted testing or AI agent tooling , with shipped automation or workflows you can demonstrate. Hands-on experience with MCP-based tooling or agent-driven device automation . Experience with chaos testing, fuzz testing, or other approaches to finding unexpected failures . Experience testing in-app purchases and subscriptions on the App Store and Google Play. Experience testing Stripe payments or similar web payment flows. Hands-on experience with Firebase Crashlytics, Remote Config, and Test Lab . Experience mentoring or leading other QA engineers. Scripting experience in JavaScript/TypeScript or similar . Strong written and spoken English communication. A track record of taking ownership: you see a gap in the testing process and build something to close it. Desired Qualifications Playwright or similar web automation experience. Experience designing or maintaining AI agents for software testing. Experience with MCP tooling beyond mobile automation. Experience with performance testing or observability tooling. How To Apply As part of the application process, we would like you to record a brief 2-minute video introduction to help us get to know you better. Please include the following in your video: A brief introduction of yourself - name, background, and a few personal details Why you’re interested in this position A highlight of your relevant skills or experience that make you a great fit for the role (Optional) Any personal interests or passions that help us understand who you are Uploading your video: Once your video is ready, please upload it to Google Drive Ensure anyone can view the video via the Google Drive link Paste the link to your video into the application form