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FDJ UNITED • Stockholm Municipality, Sweden
Role & seniority
Role: Java engineer focused on testing mindset; mid to senior level
Stack/tools
Java, Spring Boot
Test automation: TestNG/JUnit, RestAssured/RestTemplate
API/service testing; CI/CD pipelines; Git workflows
Related: API/test automation frameworks, agile practices
Top 3 responsibilities
Maintain, enhance, and expand Java + Spring Boot automation frameworks for APIs, services, and backend components
Build and maintain automated test suites (functional, integration, regression, API); drive testability and quality gates
Own automation within CI/CD (PR checks, pipelines), analyze failures, perform root-cause investigations, and reduce regressions
Must-have skills
Strong hands-on Java + Spring Boot backend development
Experience building or maintaining Java-based test automation frameworks
Proficiency with TestNG/JUnit, RestAssured/RestTemplate, API/service-level testing
Experience with CI/CD pipelines and Git workflows
Solid understanding of testing methodologies and applying them in engineering teams
Nice-to-have skills
Kafka experience
Performance/load testing tools (Gatling, k6)
Containerization/orchestration (Docker, Kubernetes)
Contract testing tools (Pact)
Who you are
Quality-focused Java engineer prioritizing testability and reliability
Collaborative, proactive, and capable of architectural thinking for continuous improvement
Location & work type
About the Role We are seeking a Java developer with a strong testing mindset — someone who not only writes high‑quality Java and Spring Boot code but also treats automated testing as an integral part of software engineering. You’ll maintain, enhance, and expand our existing robust automation frameworks to ensure quality across backend systems and APIs. You'll join the Responsible Gambling team, a group committed to building safe, resilient, and trustworthy gaming experiences for our customers. What You Will Do Maintain, enhance, and expand Java + Spring Boot–based automation frameworks for APIs, services, and backend components. Build advanced automated test solutions using Java, Spring Boot, TestNG, RestAssured, and related tools. Define testable designs and quality gates in close collaboration with backend developers. Implement functional, integration, regression, and API test suites. Own automation within CI/CD pipelines (Git workflows, PR checks, pipelines). Analyze failures, drive root-cause investigations, and prevent future regressions. Contribute to architecture discussions with a focus on testability and engineering quality. Continuously improve test strategy, test coverage, and framework capabilities. Actively participate in agile ways of working and contribute to a high-quality engineering culture. Must-Have Skills