Senior/Expert Java Developer

Salary: 1000-1300 PLN/day on B2B Work model: elastic hybrid from Gdynia (2-3 days per week from the office)   Why choose this offer? You can expect a flexible work organization The international work environment will give you the opportunity to interact with the English language on a daily basis Scandinavian organizational culture will provide you with work-life balance, you will gain time for additional training (financed by Jit) The Jit community will bring you a nice time during regular integration meetings   Project You will be involved in a financial project focused on streamlining payment flows compliant with ISO 20022 standards into a regulatory payment archive.The project aims to ensure high-performance processing, regulatory compliance, and secure archiving of financial transactions within a modern, event-driven architecture. You will work in Agile teams delivering scalable and reliable payment processing solutions in a regulatory environment.   Responsibilities you'll have Developing backend services using Java and Spring Boot Streamlining and optimizing payment flows into a regulatory payment archive Implementing and maintaining high-performance Kafka-based event streaming solutions Writing and optimizing database logic in Oracle and PL/SQL Collaborating within Agile teams to deliver secure, compliant, and scalable financial systems Designing and developing solutions for processing ISO 20022 payment messages   Expected competences and knowledge Strong experience in Java and Spring Boot Solid hands-on experience with Apache Kafka, including performance tuning Practical experience with Oracle databases and PL/SQL Good understanding of ISO 20022 payment message structure Experience working in Agile/Scrum teams Strong analytical skills and ability to work in a regulatory/financial environment   Nice to have Knowledge of Snowflake Experience with dbt Python programming skills Experience with DataStage   Technologies you'll work with Java Spring Boot Apache Kafka Oracle/PL-SQL ISO 20022 DataStage Snowflake dbt Python   Client – why choose this particular client from the Jit portfolio? Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client's premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer's work atmosphere is epitomized by the Scandinavian culture, which is conducive to people who place emphasis on work-life balance and feedback culture. Furthermore, all projects are executed in international teams, giving constant exposure to the English language.    About Jit Team The Human factor of IT - it's not just a slogan, it's a philosophy. The foundation of Jit Team is people, which is why we prioritise you. We employ over 700 experienced experts. We create highly specialised teams for clients from all over the world. We offer team members developmental projects, a wide range of benefits and a proprietary professional development programme. Behind our maxim are also charitable and educational activities. We support pupils and students by donating learning equipment. We offer internships to help launch careers in IT. We support water rescuers and hospitals by providing the necessary equipment. We are a Polish company and we share what we have achieved over 15 years of activity. By supporting indigenous initiatives, we ensure the circulation of good energy.