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.
Skills
Benefits
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
