Senior Java Fullstack Developer w Poland, Kraków

We are looking for an experienced Senior Java Fullstack Developer to join our team and be responsible for the development, integration, and maintenance of modern backend solutions. Responsibilities Design, develop, and maintain backend applications. Integrate systems and participate in migration projects. Create and develop RESTful APIs. Build and maintain CI/CD processes and automation. Collaborate with development, DevOps, and business teams in an Agile environment. Provide production support, analyze incidents, and take actions to improve service reliability. Make technical decisions aligned with the organization’s strategy and standards. Share knowledge, mentor team members, and actively contribute to raising engineering standards. Requirements Minimum 6 years of software development experience, working in both Waterfall and Agile environments. Strong knowledge of Java, Spring Framework, and RESTful APIs. Experience with system integration and/or migrations. Knowledge of DevOps, Agile, and Disciplined Agile Delivery (DAD). Experience with databases such as Oracle, MongoDB, or PostgreSQL. Practical knowledge of CI/CD and developer process automation. Familiarity with tools such as Jira, Confluence, Jenkins, Ansible, Git/GitHub, and SonarQube, or their equivalents. Knowledge of test automation frameworks, e.g. JUnit. Ability to make sound technical decisions and take ownership of quality and outcomes. Experience with mentoring and knowledge sharing. Nice to Have Experience with Spring Cloud and/or MuleSoft. Knowledge of Seeburger BIS, EDI, or similar integration solutions. Experience with Kafka, RabbitMQ, and Redis. Knowledge of Docker and containerization technologies. Experience in frontend application development. Experience with production support, incident management, and improving service reliability. Who Are We Looking For? We are looking for someone who is independent, responsible, and quality-oriented, with the ability to look at problems from a broader perspective and propose solutions that support the long-term technology strategy. We also value a strong willingness to collaborate, mentor others, and contribute to raising the overall level of the team. If you are an experienced Java Developer and would like to work on projects involving system integration, automation, and the development of modern backend solutions — we look forward to your application! Why apply for an Antal job offer? When your application is successful, you will be supported by a dedicated Consultant who will stay in regular contact with you (via email or phone), help you prepare for interviews with your future employer, and ensure a smooth and professional recruitment process. About Antal Antal is a leading recruitment and HR advisory company, present in Poland since 1996 and later expanded to the Czech Republic and Hungary. Across the CEE region, we employ around 150 professionals who deliver a full range of services – from specialist and executive recruitment, employee outsourcing and HR consulting, to employer branding and market research. Our division-based structure combines deep industry expertise with functional specialisation, enabling us to provide tailored solutions for companies in every sector. We act as a trusted partner for both employers and candidates, sharing our knowledge and guiding them through every stage of the talent journey. We connect exceptional people with the right opportunities and help organisations build successful teams