QA Engineer

Individual contributor role reporting to the Director of QA, with no direct reports.

Salary: €5000 per month

The role

You test the web application, frontend and backend, and the mobile applications on iOS and Android. That is the surface of the job.

Underneath it, the point of this role is to understand how the product actually works: the data flow, the API contracts, the places where two systems meet and produce behaviour nobody specified. That understanding is what lets you improve a specification before code is written, catch the gap nobody else noticed, and give Support, Sales, Product and Engineering an answer they can rely on.

We are looking for extreme ownership: the person who picks up the task nobody else wants because it needs doing and they can see why it matters.

What you will do

• Test the product properly: web end to end, frontend behaviour and backend responses, not just the UI layer. Test mobile on iOS and Android against an agreed device and OS matrix, with a real understanding of platform conventions and where the two diverge.
• Own automated coverage on web: extend and maintain the Playwright suite and write new tests for the features you take through. Investigate failures and fix flakiness rather than muting it, and be honest about what automation is and is not covering.
• Verify at the API and data layer: requests, responses, payloads, status codes, backward compatibility for older clients. Query the database directly to confirm what actually happened, rather than what the screen says happened.
• Prevent bugs, not just report them: pressure-test specifications with Product, Design and engineers before development starts, including happy paths, edge cases, error states and empty states. Point out the platform that was forgotten, the API version that will break, and the migration nobody planned.
• Debug to root cause: narrow down where an issue breaks and what the system is actually doing, then give developers actionable information.
• Support the wider business: reproduce and triage customer issues that reach engineering, and keep test plans and known-issue lists current so release decisions rest on evidence.
• Use AI every day: reduce repetitive work, build reusable AI skills for the wider team, make small code fixes where reasonable, and bring ideas for improving quality.

What we are looking for

• Three to five years of hands-on testing of web applications, with demonstrated ability to find root causes rather than symptoms.
• Practical test automation experience: written and maintained UI or API tests in Playwright or a comparable framework, and ability to work in a test codebase independently.
• Ability to read and reason about API contracts and payloads, query a database in SQL to verify data, and use—or quickly learn—traffic and API inspection tooling.
• Practical mobile testing experience: ability to distinguish platform conventions from defects and determine the device and OS coverage a change requires.
• Proven collaboration with Design and Product during specification work, with examples of improving specifications without owning them.
• Excellent written and spoken Polish and English, both at C2 or native level.

Nice to have

• Testing experience in a regulated or healthcare-adjacent domain.
• Experience with device farms or cloud device labs, such as BrowserStack or Firebase Test Lab.
• Experience triaging crash and error monitoring tools, such as Sentry or Crashlytics.
• Accessibility testing experience (WCAG).