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

Sii Poland Katowice, Silesian Voivodeship, Poland

remotefull-time
Posted Jan 12, 2026Apply by Feb 11, 2026

Role & seniority

  • Senior Test Automation Engineer (5+ years)

Stack/tools

  • Java, Kafka, Event Sourcing, EDA

  • Automation: Cucumber, Selenium, JUnit

  • API testing: REST, gRPC, GraphQL (Postman, RestAssured, Karate)

  • CI/CD and collaboration: Git, Jenkins, Jira, Confluence

  • Testing approaches: BDD/Gherkin, contract testing, performance/load testing

Top 3 responsibilities

  • Design and implement robust test automation frameworks for the Event-Driven Architecture platform

  • Build and maintain automated tests across multiple levels; eliminate the backlog of manual regression via automation

  • Validate message flows, event-driven workflows, and state transitions; ensure data consistency, idempotency, and fault tolerance

Must-have skills

  • 5+ years in test automation; experience in international/multicultural environments

  • Strong Kafka/distributed systems testing experience; Agile (Scrum/XP) and DevOps practices

  • Java with Cucumber, Selenium, JUnit; API testing (REST/gRPC/GraphQL)

  • Proficiency with CI/CD/tools: Git, Jenkins; Jira/Confluence knowledge

  • Understanding of Event Sourcing, CQRS, and contract testing; performance/load testing

  • BDD/Gherkin; fluent English (written/spoken); fluent Polish

  • Residing in Poland

Nice-to-haves

  • Experience in multilingual teams and diverse environments

  • Deeper knowledge of event-driven test mocks/simulations and advanced contract testing frameworks

Location & work type

Location: Poland

Work type: Full-time (on-site/hybrid as per po

Full Description

Join our Scrum team developing next-generation e-commerce backend services. In this role, you will design and implement robust test automation frameworks for our Event-Driven Architecture (EDA) platform based on Apache Kafka and Event Sourcing. Your work will be critical to ensuring the scalability, reliability, and performance of distributed systems, while collaborating closely with developers and sharing knowledge within the QA community.

Sii ensures that all employment-related decisions are made solely on the basis of qualifications, competencies, and performance. We are committed to equal treatment of all individuals, regardless of any protected characteristics, and promote a diverse and inclusive work environment.

Your tasks

Supporting development teams in testing activities within Agile environments Preparing and executing test plans, test scenarios, and exploratory testing where automation is not yet applied Building and maintaining automated tests across multiple levels Eliminating the backlog of manual regression tests through automation coverage Implementing integration, functional, load, and performance tests Validating message flows, event-driven workflows, and state transitions in event-sourcing environments Ensuring data consistency, idempotency, and fault tolerance across microservices Applying mocking and simulation techniques for event-driven test scenarios Reviewing automation test code to enhance quality and share knowledge Contributing to the QA Community of Practice by sharing principles, practices, and improvements

Requirements

Having at least 5 years of proven experience in test automation, preferably in international and multicultural environments Working with Agile methodologies (Scrum, XP) and DevOps practices Testing Kafka-based applications with strong expertise in distributed systems Programming in Java with frameworks and tools such as Cucumber, Selenium, and JUnit Performing API testing (REST, gRPC, GraphQL) using Postman, RestAssured, or Karate Operating CI/CD and collaboration tools such as Git, Jenkins, Jira, and Confluence Understanding Event Sourcing, CQRS patterns, and contract testing frameworks in depth Conducting performance and load testing to ensure scalability and reliability Practicing BDD and Gherkin-driven methodologies in Agile teams Communicating fluently in English, both written and spoken, with technical and non-technical stakeholders Fluent Polish required Residing in Poland required

Job no. 260112-G961U

Benefits For You

Great Place to Work

Solid financial situation

Contracts with the biggest brands

Centre of internal trainings

Many experts you can learn from

Open and accessible management team

Profit sharing

Passion Sponsorship program

Regular integration events and trips

Comfortable and well-equipped offices

MySii app

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Test AutomationAgile MethodologiesKafkaDistributed SystemsJavaCucumberSeleniumJUnitAPI TestingPostmanRestAssuredPerformance TestingEvent SourcingCQRSBDDGherkinmulti-location

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