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