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DCG

Senior Java Backend Developer

Gdynia
Gdańsk
Warszawa
21 days ago

In short

Senior Java Backend Developer in Gdynia. Develop & maintain Java apps for pension/savings products, focusing on calculations, integrations, and reporting. Requires Java 21, Spring Boot, PostgreSQL, JMS/MQ, Git, CI/CD, OOP. Remote: No.

AI-written summary based on the listing content.

The consultant will be responsible for developing, enhancing and maintaining our Java-based applications that handle taxation, account management, and investment processing for our pension and savings products.

Responsibilities:

Design, develop, and maintain Java applications supporting savings and investment products

  • Build and enhance calculation engines ensuring compliance with tax regulations across multiple countries
  • Develop solutions supporting complex business processes, tax authority integrations, and customer-facing reporting
  • Participate in requirements analysis, solution design, development, testing, and deployment
  • Collaborate with financial analysts to translate business requirements into technical solutions
  • Mentor developers and act as a code reviewer and design sparring partner
  • Promote practical engineering practices across the development teamUse AI-assisted development and automation responsibly to improve productivity, quality, and learning
  • Contribute strong collaboration and analytical skills to solve complex technical challenges Requirements:

Strong experience in Java 21 and Java-based application development

  • Hands-on experience with Spring Boot and related Java frameworks
  • Proven experience with relational databases and PostgreSQL SQL
  • Practical experience with messaging technologies such as JMS, MQ, or similar protocols
  • Strong proficiency in Java frameworks including Spring and Hibernate
  • 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
  • Ability to collaborate effectively with cross-functional stakeholders
  • Strong analytical and problem-solving skillsVery good command of English, both spoken and written
Published 2026-08-28
Expires 2026-11-26
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