Senior QA Automation Engineer

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 ).