Senior Java Developer

Your Profile (Mandatory Requirements)

• Strong software development experience with Java 21+ and Spring Boot
• Experience designing and developing microservices and distributed backend systems
• Solid knowledge of REST APIs, Kafka and event-driven architectures
• Strong SQL skills and experience with Microsoft SQL or other relational databases
• Experience writing unit, integration and acceptance tests using JUnit and Cucumber
• Ability to design maintainable automated tests alongside production code
• Experience with API testing tools such as REST Assured or similar
• Experience testing asynchronous flows and validating data across services, messages and databases
• Working knowledge of UI test automation using Playwright, Selenium or similar
• Experience with Git and CI/CD tools such as Jenkins, including integrating automated tests into delivery pipelines
• Understanding of OpenAPI and AsyncAPI specifications
• Ability to design and execute structured manual and exploratory tests when needed
• Strong problem-solving skills, quality mindset and good English communication skills

Preferred Qualifications

• Experience with React and frontend development
• Experience with Hibernate or similar persistence frameworks
• Knowledge of mutual funds, investment funds or finance in general
• Experience with cross-border cash payments
• Experience improving reusable test automation frameworks across multiple projects
• Collaborative mindset and ability to share knowledge across Development, Test, DevOps and Product Management
• Adaptability, attention to detail and commitment to continuous learning and automation

Application Deadline: 06-11-2026 How It Works at Deploja At Deploja, you'll have the opportunity to work on exciting IT projects across both the public and private sectors. We match your skills, experience, and salary expectations with relevant client assignments. A Simple and Digital Process: - Apply – We review your profile and match your skills with relevant consulting opportunities. - Join Our Consultant Network – If your profile is a good match, you'll have the opportunity to digitally sign our cooperation and employment terms and gain access to our consultant platform. - Find the Right Assignment – Explore opportunities, set your salary expectations, and receive support from our team throughout the process. Your Skills. Your Expectations. The Right Assignment. We take your salary expectations into account and work to find assignments that suit you. We offer assignment-based employment, meaning your employment begins once we have agreed on a suitable client assignment and you start working on it. Signing the agreements does not guarantee an assignment.