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August 15, 2026

Senior Test Automation Engineer – .NET and JavaScript Expertise

Senior • Hybrid

27,300 - 32,760 PLN

Krakow, MA, Poland

Empower quality at scale — lead the evolution of automated testing in a transformative cloud-native environment!

Krakow-based opportunity with a hybrid work model, allowing up to 2 remote days per week.

Description

As a Senior Test Automation Engineer, you will work on the Hilda 2.0 program — a critical initiative migrating legacy applications to a modular, Azure-based architecture supporting Israeli regulatory reporting. You will drive automation excellence and ensure high quality and reliability as the platform evolves.

Responsibilities

  • Own and refine the automated testing framework across the portfolio, including design standards, tooling, and best practices.
  • Develop and implement comprehensive test strategies covering unit, API, integration, and end-to-end testing layers.
  • Build and maintain automation scripts with Playwright for React frontends, and backend tests using xUnit (.NET) and Vitest/Jest.
  • Integrate automated tests into Azure DevOps CI/CD pipelines, optimizing for speed, reliability, and thoroughness.
  • Promote good testing practices — testability, coverage, assertions — and manage test data for robust scenarios.
  • Validate data flows across Azure SQL, DWH, and other layers through data-driven testing, ensuring end-to-end integrity.
  • Lead troubleshooting efforts, manage flaky tests, and improve overall test suite reliability; share quality metrics with stakeholders.
  • Collaborate with developers on acceptance criteria, review test code, and provide mentorship on testability.
  • Support UAT activities, including environment preparation, execution, and documentation of results.

Requirements

  • 5+ years of experience in test automation, with a strong track record in framework development.
  • Proficiency in C#/.NET, with the ability to read, write, and debug production-quality code.
  • Strong JavaScript/TypeScript skills for automation purposes.
  • Hands-on expertise with Playwright, or Selenium with readiness to transition.
  • Practical knowledge of xUnit/NUnit and Vitest/Jest for unit and integration testing.
  • Experience integrating automation into Azure DevOps or GitHub Actions CI/CD pipelines.
  • Solid SQL skills, particularly with MSSQL or Azure SQL, including test data setup and validation.
  • Familiarity with REST API testing, including contract validation and authentication flows.
  • Highly autonomous, proactive, and able to set automation standards and roadmaps.
  • Good Git practices, code-review discipline, and maintainable test-code development.
  • Excellent communication skills in English at B2+ level.

Preferred Qualifications

  • Familiarity with Azure services, including App Service, Key Vault, and Functions.
  • Experience with Power BI, DAX, or SSRS report testing.
  • Knowledge of contract testing (Pact), OpenAPI validation, and infrastructure as code (Terraform).
  • Experience with monitoring and observability tools, such as Application Insights, OpenTelemetry, and Serilog.
  • ISTQB or Azure/test automation certifications.

Language

  • Communicative English proficiency at B2+ level.

Eligibility

  • Only candidates with an existing legal right to work in the European Union will be considered.

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