Test Engineer (.NET / JavaScript)

Introduction & Summary

A highly motivated Test Engineer with expertise in .NET and JavaScript is sought for a pivotal role in a modernization program. The successful candidate will have a strong background in test automation, particularly in developing frameworks and integrating testing into CI/CD processes. The role offers a unique opportunity to contribute to the migration of legacy applications to a cloud-native architecture while ensuring quality through effective testing practices.

Location

Kraków, HYBRID WORK

Contract type

Contract B2B ( Long Term)

Rate: 140-155 PLN/h + VAT

Working time

09:00-17:00 CET

Main Responsibilities

• Own and evolve the automated testing processes across the portfolio.

• Design and implement test strategies across various testing layers.

• Build and maintain E2E automation and backend integration tests.

• Integrate automated tests into CI/CD processes.

• Champion best practices in testing and quality assurance.

• Validate data flows and manage test data.

• Drive root-cause analysis and manage flaky tests.

• Collaborate with developers on acceptance criteria and code review.

• Support UAT coordination and document test results.

Key Requirements

• 5+ years of commercial experience in test automation.

• Strong coding skills in C# / .NET.

• Expertise in JavaScript / TypeScript for test automation.

• Proficient with Playwright or Selenium.

• Experience with xUnit / NUnit and Vitest / Jest.

• Familiarity with Azure DevOps CI/CD integration.

• Practical SQL experience (MSSQL / Azure SQL).

• Proficient in REST API testing.

• Self-driven and able to set standards for automation.

• Good Git practices and English communication skills (B2+).

Nice to Have

• Knowledge of Azure services (App Service, Azure SQL, etc.).

• Experience with Azure Data Factory and ETL validation.

• Familiarity with Power BI report testing.

• Understanding of contract testing and OpenAPI validation.

• Experience with performance testing tools like k6 / JMeter.

• Awareness of Infrastructure as Code principles.

• Knowledge of observability and monitoring solutions.

• ISTQB Advanced or relevant certifications.