Senior QA Automation Engineer

xflow· Happy Color
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📍 Warsaw, Mazowieckie, PolandDeel B2B

About this role

X-FLOW is a mobile game development company established in 2018. We gained recognition after the release of Happy Color, the most popular digital coloring book and one of the most successful ad-driven mobile apps in the world. We take pride in our diverse and talented team and partners, spread across the UK, Cyprus, the Netherlands, and other regions worldwide.


We are currently looking for a proactive Senior QA Automation Engineer (Mobile, Web & Backend) for our flagship project, Happy Color.


Key Responsibilities:

  • Design, develop and maintain test frameworks (Mobile, E2E/UI, API), including setting standards and best practices.
  • Increase effective test coverage with a focus on critical user flows and APIs.
  • Integrate testing into CI/CD pipelines, including PR runs, nightly/regression tests, flaky detectors, quarantine mechanisms, artifact management, and maintaining stable quality gates.
  • Conduct test code reviews.
  • Work closely with development and QA teams to reduce technical debt, improve testability, and enhance developer experience (DX).


Requirements:

  • 5+ years in QA Automation, with at least 3+ years working with TypeScript/JavaScript.
  • Deep experience with Playwright.
  • Experience with Appium.
  • Experience in building test frameworks from scratch using best practicies.
  • Experience with REST/GraphQL API testing; working with schemas (OpenAPI/Swagger), and client generation.
  • Experience with GitLab CI, artifact management, sharding/parallelism, retries, and pipeline containerization.
  • Experience with Docker; experience with Kubernetes (k8s) is a plus; familiarity with basic AWS services for test environments.
  • Russian - С1/higher, English - B1.


Nice to have:

  • Experience in Mobile games automation.

What We Offer:

  • Competitive salary and benefits package.
  • Opportunity to work with a talented and passionate team in a creative and dynamic environment.
  • Flexible working hours and remote/office work options.
  • Career growth and professional development opportunities.
  • A fun and inclusive company culture that celebrates diversity and creativity.


Join us and let’s create great content together!


When you apply for this role, we process your personal data in accordance with our Candidate Privacy Notice (https://xflowgames.com/candidate-privacy-notice).

Frequently Asked Questions

Is the salary disclosed for the Senior QA Automation Engineer position at xflow?
The salary for this Senior QA Automation Engineer role at xflow is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Senior QA Automation Engineer position at xflow located?
This Senior QA Automation Engineer role at xflow is based in Warsaw, Mazowieckie, Poland. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Senior QA Automation Engineer role at xflow full-time or part-time?
This is listed as a Deel B2B position. It is posted as a Senior QA Automation Engineer role in the Happy Color department at xflow.
Which team or department does the Senior QA Automation Engineer at xflow belong to?
This Senior QA Automation Engineer position is part of the Happy Color department at xflow. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Senior QA Automation Engineer position at xflow?
Click the "Apply Now" button on this page. You will be redirected to xflow's official application portal hosted on bamboohr where you can submit your application directly.
When was the Senior QA Automation Engineer job at xflow posted?
This Senior QA Automation Engineer position at xflow was posted on Jul 10, 2026. Apply as soon as possible — early applications are often reviewed first.
Senior QA Automation Engineer
xflow
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