June 4, 2026

SDET API with Python – Warsaw (Hybrid)

Mid • Hybrid

Warsaw, Poland

SDET API with Python – Warsaw (Hybrid)

Join our Test Engineering team and drive quality for complex backend systems.

We’re looking for a mid Test Automation Engineer who takes ownership, thinks beyond the test case, and thrives in a fast-paced, automation-first environment. You'll work on a backend-heavy product area, ensuring reliability, coverage, and speed — from API level to CI/CD.

📌 Role Overview

🛠️ Must-Have Technical Skills

  • Strong Python – clean, maintainable test code & utilities

  • API/backend testing with Pytest (fixtures, parametrization, assertions, test organization)

  • CI/CD experience (Jenkins or similar) – pipeline integration, flaky test troubleshooting, reporting

  • End-to-end debugging – logs, root cause analysis, reproduction

  • Linux basics (shell, environment, debugging) + SQL basics for data validation

🌟 Nice-to-Have (Desired Skills)

  • UI test automation with Playwright (page objects, stable selectors, async handling)

  • Experience testing REST / microservices across varied stacks

  • Practical use of GenAI tools (Copilot-like assistants) to accelerate test development while maintaining quality

📋 What You’ll Do (Responsibilities)

  • Own quality for a backend-heavy product area – aim for ~80% automation / 10–20% manual where needed

  • Design robust automated coverage for business flows, including integration with partner systems

  • Integrate tests into CI/CD pipelines, reduce flakiness, and improve feedback speed

  • Debug failures end-to-end, validate assumptions, and drive root cause analysis

  • Work proactively – spot gaps in coverage, stability, or process and improve them without being asked

  • Communicate clearly – write concise updates, defect reports, and explain risks to engineers and stakeholders

  • Collaborate with Dev, DevOps, and Product in agile teams – participate in design discussions and quality strategy

✅ What We’re Looking For (Mindset & Fit)

  • Quality-first mindset – challenges assumptions, prioritizes customer impact and reliability

  • Balances speed with robustness – knows when to automate and when manual testing adds value

  • Follows through – takes ownership from discovery to resolution

📍 Work Location & Conditions

  • Hybrid: 3 days per week from Warsaw office

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On-site

Warsaw, Poland

20,160 - 21,840 PLN

🏢 Summary: Senior Test Automation Engineer role focused on designing and maintaining scalable automated testing frameworks for UI and API, integrating them into CI/CD pipelines, and ensuring high software quality. The position combines hands-on automation development with collaboration in Scrum teams and active contribution to quality standards. On-site work in Warsaw. 🗂️ Requirements: 5+ years experience in QA or Test Automation, Strong Java programming skills, Experience with Playwright or Selenium or RestAssured or Postman or Newman, Experience with CI/CD tools, Ability to design test cases and use Jira with Xray or Zephyr, Understanding of ISTQB Foundation principles, Proficiency with Git, Fluent Polish, Fluent English, Legal right to work in EU 📃 Skills: Java, Playwright, Selenium, RestAssured, Postman, Newman, GitLabCI, GitHubActions, AzureDevOps, Jenkins, Jira, Xray, Zephyr, ISTQB, Git, Docker, Kubernetes, AWS, Azure, GCP, Cucumber, Python, CSharp, JavaScript, TypeScript, Scrum, CI, CD 🏢 Description: Empower quality at the forefront — lead the charge in advanced test automation! Warszawa-based opportunity with on-site work model. As a Senior Test Automation Engineer , you will be working for our client, a leader in software development dedicated to delivering high-quality solutions. You will play a pivotal role in designing and maintaining robust automated testing frameworks, ensuring the delivery of reliable, defect-free software. This is your chance to drive innovation in quality assurance and elevate your career in a dynamic, collaborative environment. Your main responsibilities: Design, implement, and maintain automated tests for UI, API, regression, and integration, boosting testing efficiency and coverage. Develop and optimize automation frameworks in accordance with best practices, ensuring scalability and reliability. Integrate automated tests into CI/CD pipelines to support continuous delivery and monitor stability. Analyze automated test results, report defects, and collaborate with development and DevOps teams for prompt resolution. Create and execute manual, functional, and exploratory tests to validate new features and changes each sprint. Participate actively in Scrum ceremonies, contributing to sprint planning, reviews, and retrospectives to promote quality from inception through delivery. Collaborate with the team to define quality standards, risk mitigation strategies, and ensure adherence to Definition of Done and Ready criteria. You're ideal for this role if you have: At least 5 years of experience as a QA or Test Automation Engineer. Hands-on experience with Java programming language. Proven experience with automation frameworks such as Playwright, Selenium, RestAssured, or Postman/Newman. Familiarity with CI/CD tools like GitLab CI, GitHub Actions, Azure DevOps, or Jenkins. Ability to design test cases and work with test management tools like Jira combined with Xray or Zephyr. Solid understanding of testing techniques aligned with ISTQB Foundation principles. Good command of Git. It is a strong plus if you have: (optional) Knowledge of additional programming languages: Python, C#, JavaScript/TypeScript. Experience in performance testing. Familiarity with Docker/Kubernetes and test environment containerization. Knowledge of cloud testing platforms (Azure, AWS, GCP). Experience with shift-left testing strategies, contract testing, or BDD (e.g., Cucumber). Language Required for the role: Fluent in Polish and English. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.