Senior Java Backend Developer
DCG
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Gdynia
Gdańsk
Warszawa
Expires Nov 26, 2026
8 days ago
In short
Senior Java Backend Developer needed in Gdynia. Develop/maintain Java apps for pension/savings products, calculation engines, and tax compliance. Requires Java 21, Spring Boot, PostgreSQL, JMS, Git, CI/CD, OpenAPI/AsyncAPI. Mentoring and AI-assisted dev expected.
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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 team
- Use 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 skills
- Very good command of English, both spoken and written
| Published | 2026-10-27 |
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11/26/2026
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