Senior Java Developer Java, Spring Boot, Postgres SQL, Hibernate Warsaw, Gdańsk, Gdynia

As a recruitment company, DCG understands that every business is powered by experienced professionals. Our management style and partnership approach enable us to meet your needs and provide continuous support. Due to our ongoing growth and the large number of recruitment projects we undertake for our partners, we are currently looking for: Responsibilities: Upgrade Java applications to at least Java 17 and Spring Boot 3.3.x baseline Design, develop, and maintain Java applications for savings and investment products Build calculation engines supporting tax compliance across multiple countries Develop complex business processes integrating with tax authorities and generating customer-facing reports Participate in the full software development lifecycle, including requirements analysis, design, coding, testing, and deployment Collaborate with financial analysts to translate business requirements into technical solutions Requirements: Proven experience with Java and Spring Boot upgrade projects Strong proficiency in Java 21 and Spring Boot Hands‑on experience with Java frameworks, including Spring and Hibernate Practical knowledge of relational databases, PostgreSQL, and SQL Experience with messaging protocols such as JMS and MQ Knowledge of OpenAPI and AsyncAPI for producing and consuming data Familiarity with Git and CI/CD pipelines Understanding of software design patterns and object‑oriented programming principles Very good command of English, both spoken and written Offer: Private medical care Co‑financing for the sports card Constant support of dedicated consultant Personal Consulting Agency (License No. 4642)