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.
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