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June 12, 2026

Senior Java Developer - Microservices

Senior • Hybrid

18,900 - 23,100 PLN

Warsaw, Poland

Ignite innovation — shape the future of enterprise systems!

Warszawa-based opportunity with hybrid work model (up to 4 remote days per week).

As a Senior Java Microservices Developer, you will be working for our client, a leading player in the IT industry committed to building scalable, secure, and efficient enterprise solutions. You will contribute to the development and maintenance of complex Java-based systems, driving digital transformation and supporting business agility in a dynamic environment. This role offers new challenges for career growth and impactful projects for global enterprise success.

Your main responsibilities:

  • Develop and maintain Java applications (Java 8+) within microservices architecture, ensuring high performance and scalability
  • Collaborate on system enhancements, integrating new features based on detailed business requirements
  • Design and implement solutions using Spring (including older versions) and Spring Boot, adhering to best practices
  • Work on system integration using REST, SOAP, and message queuing systems, ensuring robust and secure communication
  • Contribute to system migration initiatives, upgrading stacks to newer frameworks and technologies
  • Document system designs with UML diagrams and other notation standards to support development and integration efforts
  • Engage in troubleshooting, optimizing, and extending existing legacy codebases, maintaining high code quality

You're ideal for this role if you have:

  • At least 5 years of professional experience in Java development within enterprise environments
  • Strong proficiency in Java, including working with legacy codebases
  • Extensive experience with Spring framework (any version) and Spring Boot
  • Solid SQL knowledge and experience with database systems like Oracle
  • Hands-on experience with microservices architecture and monolithic systems on application servers like Tomcat
  • Familiarity with distributed systems architecture and system integration (REST, SOAP, queues)
  • Knowledge of security mechanisms such as TLS/mTLS, certificates, and encrypted connections
  • Working experience with Maven, Gradle, Git, and tools like SOAP UI, POSTMAN
  • Ability to write bash or cmd scripts for automation tasks

It is a strong plus if you have: (optional)

  • PLSQL knowledge
  • Familiarity with JSF, JSP, or C++
  • Experience with Ansible or other automation tools
  • Insights into system security best practices
  • Ability to interpret BPMN and UML standards, with problem-solving skills related to new feature development

Language Required for the role:

  • Polish (Communicative proficiency)

#MAKEYourCareerBETTER

Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.