Senior Test Automation Engineer with Java (f/m/x)

Join a Scrum team developing the next generation of e-commerce backend services. As a Senior Test Automation Engineer, you will play a key role in ensuring the quality of a modern, distributed platform based on Event-Driven Architecture and Apache Kafka. We are looking for a detail-oriented professional with a creative mindset and strong experience in comprehensive test planning and automation. You will collaborate closely with developers to ensure API and data layers are thoroughly verified before production release, while actively contributing to the QA community and supporting the automation skill network.Your tasksCollaboration with development squads in defining and refining quality criteriaPreparation of structured test documentation and scenario coverageCreation and continuous enhancement of automated regression suitesTransformation of manual verification processes into automated solutionsImplementation of integration and end-to-end validation for backend servicesVerification of event flows and state transitions within event-sourced systemsExecution of exploratory verification activities where automation coverage is limitedCritical analysis of requirements and identification of potential quality risksDevelopment of test doubles and simulation mechanisms for asynchronous communicationContribution to the QA Community of Practice initiatives and promotion of best practicesRequirementsProven experience in comprehensive test strategy developmentStrong background in automation framework architecture and optimizationSolid understanding of Event-Driven Architecture and event sourcing patternsPractical knowledge of API validation and backend data verificationExperience in quality assurance for distributed and microservices-based systemsFamiliarity with message-driven platforms, including Apache KafkaKnowledge of non-functional testing approaches (performance, scalability, resilience)Understanding of data integrity, idempotency, and fault tolerance principlesActive involvement in peer review processes and engineering knowledge exchangeWhat we offer Great Place to Work since 2015 - it’s thanks to feedback from our workers that we get this special title and constantly implement new ideas Employment stability - revenue of PLN 2.1BN, no debts, since 2006 on the market We share the profit with Workers - over PLN 76M has already been allocated for this aim since 2022 Attractive benefits package - private healthcare, benefits cafeteria platform, car discounts and more Comfortable workplace – class A offices or remote work Dozens of fascinating projects for prestigious brands from all over the world PLN 1 000 000 per year for your ideas - with this amount, we support the passions and voluntary actions of our workers Investment in your growth – meetups, webinars, training platform and technology blog – you choose Fantastic atmosphere created by all Sii Power People If you want to work on systems with high operational significance — apply now!