Java Software Engineer / 1

For one of our clients in the telecommunications industry we are looking for JVM Software Engineer.

The new joiner will be part of a team focused on modernizing and streamlining legacy Java applications.

Key responsibilities include

• Drive modernization – migrate Java applications from Wildfly to Spring Boot, removing legacy components like EJBs and JMS while simplifying the architecture.
• Standardize APIs – create and evolve OpenAPI specifications, driving contract-first development and clean service design.
• Integrate seamlessly – connect systems and processes through Kafka to enable reliable, event-driven communication.
• Guarantee quality – develop robust integration and regression tests to ensure full functional parity after migration.
• Build for the cloud – define Kubernetes environment, access controls, and deployment strategies aligned with platform standards.
• Automate delivery – design and refine CI/CD pipelines that bring speed and stability to every release. And beyond migration:
• Keep applications continuously up to date using OpenRewrite and Renovate Bot
• Design and implement AI-based code review systems as an intelligent first gate for code quality and guideline compliance
• Experiment daily with GitHub Copilot and other AI assistants to accelerate development
• Explore AI-driven approaches to detect risks and breaking changes during library updates

Project technology

SpringBoot (the latest), Java 21 (version 8, 11, 17 in the migrated project), JPA, GitHub Copilot, Claude Code, Renovate Bot, OpenRewrite, EJB (as part of a migrated project, just being removed), Camunda, Kubernetes, Kibana, CI/CD (Jenkins), Git, Intellij Idea

Qualifications

• Knowledge of Spring Boot and Java,
• Experience with SQL databases,
• Good understanding of REST APIs,
• Knowledge of OpenAPI,
• Experience using Kubernetes.
• Fluent communication skills in English and Polish (minimum B2 level), both written and spoken.

Nice to have

• Kubernetes/ Cloud Environment.
• Event Sourcing.
• Kafka.

This position allows for remote work for candidates based in Poland.

We hereby inform you that Inetum Polska sp. z o.o. has implemented an internal reporting (whistleblowing) procedure. The content of the procedure and the possibility to submit an internal report are available at:

https://inetum.whispli.com/speakup?locale=pl