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Sii Poland

Senior Test Automation Engineer with Java and Kafka

Sii Poland, Poland, New York, United States

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Senior Test Automation Engineer with Java and Kafka Join to apply for the

Senior Test Automation Engineer with Java and Kafka

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Sii Poland

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.

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

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

Medical care

Job Details Job No.

251210-DHOW7

Seniority level : Mid‑Senior level

Employment type : Full‑time

Job function : Quality Assurance

Industry : IT Services and IT Consulting

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