Senior Java Backend Engineer - Spring Boot & PostgreSQL

DCG; Poland; On-site; PLN 110,000 - 170,000; Full time

Benefits offered by this job

Private medical care

Sport subscription

Dedicated consultant support

Employee referral program

Co-financing for sports card

Job summary

DCG is seeking an experienced Java/Spring developer to upgrade and maintain Java applications for savings and investments products. You will work with PostgreSQL, JMS/MQ, OpenAPI, and modern Spring/Hibernate stacks to deliver reliable backend services.

You will participate in the full development cycle including design, testing, deployment, and collaboration with financial analysts to translate business requirements into robust technical solutions across multiple countries.

Qualifications

• Very good command of English, both spoken and written.

Responsibilities

• Upgrade applications to Java 17+ and Spring Boot 3.3.x baseline.
• Design, develop and maintain Java applications supporting savings and investments products.
• Build 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 activities.
• Collaborate with financial analysts to translate business requirements into technical solutions.

Skills

Java

Spring Boot

PostgreSQL

SQL

JMS/MQ

Hibernate

OpenAPI/AsyncAPI

Git

CI/CD

Design patterns

OOP

Tools

OpenAPI

AsyncAPI

IBM MQ

Job description

DCG is seeking an experienced Java/Spring developer to upgrade and maintain Java applications for savings and investments products. You will work with PostgreSQL, JMS/MQ, OpenAPI, and modern Spring/Hibernate stacks to deliver reliable backend services.

You will participate in the full development cycle including design, testing, deployment, and collaboration with financial analysts to translate business requirements into robust technical solutions across multiple countries.