Senior QA Engineer with .NET

GFT Poland is a technology company with 1200 skilled experts, specializing in IT engineering and consulting. They deliver ambitious projects and invest in employee growth, focusing on sustainable products and a culture of top performance. The role is within a large-scale modernization program based on Azure, .NET, and React technologies.

• 5+ years of experience in test automation and test framework development
• Strong experience with C# / .NET and automated testing
• Hands-on experience with Playwright and TypeScript/JavaScript
• Experience with unit, integration, API, and end-to-end testing
• Experience with xUnit, NUnit, Vitest, or Jest
• Experience integrating automated tests into Azure DevOps or GitHub Actions CI/CD pipelines
• Strong SQL skills and experience validating data flows and transformations
• Experience with REST API testing and authentication mechanisms
• Strong understanding of testing best practices, test data management, and quality assurance processes
• Experience with Git, code reviews, and clean code practices
• English language proficiency at B2 level or higher

Nice to have:

• Experience with Azure services and Azure Data Factory
• Experience testing ETL processes, data pipelines, or data warehouses
• Knowledge of Power BI, SSRS, or reporting validation
• Experience with contract testing, OpenAPI validation, or performance testing tools
• Knowledge of Terraform and cloud infrastructure
• Experience with Application Insights, OpenTelemetry, or monitoring solutions
• ISTQB Advanced or Azure certifications

• Define and drive the test automation strategy within the modernization program
• Develop and maintain test automation frameworks using Playwright and .NET
• Create and execute unit, integration, API, and end-to-end automated tests
• Integrate automated tests into Azure DevOps CI/CD pipelines
• Validate application data, business processes, and data flows across SQL and data warehouse environments
• Analyze defects, improve test reliability, and monitor quality metrics
• Collaborate with developers on acceptance criteria, test coverage, and code quality
• Support user acceptance testing and release activities