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Senior Java Software Engineer – banking industry

Company: Groupe SII

Location: Warsaw, London

Posted: June 03, 2026

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Position Details

We are looking for an experienced Java Developer to join our project in the banking industry.

As a Team member, you will be involved in risk remediation initiatives in the existing platforms.

Join us!

Your role
  • Working on existing applications in the context of technology updates
  • Updating Java versions, libraries
  • Patching security vulnerabilities
  • Introducing DevOps improvements, which involve small changes to the code
  • Adjusting various applications to upgraded database versions (different databases in different applications)
  • Upgrading UI stack (React or Angular – depending on the application)
  • Your skills
  • Minimum of 7 years of Java programming experience with proficiency in object-oriented design principles
  • Knowledge of distributed data storage systems and continuous integration and deployment (CI/CD) processes
  • Proficiency in frameworks for creating web applications, including Spri...