Lead QA

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.

What are you working on?

• The name of the project(s): Happy Color
• At what stage of the project(s)? Post-launch
• Genres: Application, Casual
• Platforms: Mobile, iOS, Android

For which tasks (responsibilities)?

• Lead end-to-end testing across both frontend and backend components, taking full responsibility for the overall product quality and coordinating all testing activities.

• Improve and standardize QA processes and documentation within the team.

• Manage testing schedules, resources, and priorities to meet project deadlines.

• Collaborate closely with frontend and backend developers to identify and resolve issues.

• Manage and mentor a team of skilled QA engineers, promoting a proactive approach to problem-solving.

• Oversee both manual and automated testing throughout the development lifecycle, as well as ongoing product support.

What kind of professional are we looking for?

• At least 5 years of experience in QA, including 3 years in a lead position (both product development and operational support).

• Experience with mobile applications or games with a large user base is required; experience in game development is a plus.

• Strong knowledge of QA methodologies, API testing, analytics testing (e.g., Firebase), database integrity checks, and working with MMPs (e.g., Adjust, Appsflyer).

• Proficient with:
  - Network sniffing tools (e.g., Charles Proxy).
  - Mobile debugging environments (e.g., Android Studio, Xcode).
  - API clients (e.g., Postman).
  - Database analysis tools (e.g., BigQuery or other SQL-based platforms).
  - Test automation frameworks and tools.

• Proven ability to develop and improve QA processes while managing teams of 5–10 people.

• Excellent leadership and proactive problem-solving skills.

• Russian - fluent, English - Intermediate+.

Why do we enjoy working here?

• 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.