New offer - be the first one to apply!

April 8, 2026

Fullstack Engineer (backend heavy)

Mid • Hybrid

Krakow, Poland

Summary

You will support the delivery of projects within the Clients platform, enabling seamless global financial transactions through effective analysis and agile design.

Main Responsibilities

  • Building and supporting services, microservices, and applications (both back-end & front-end) using Java versions 11/17/21 and ReactJS, while maintaining standard products.

  • Reducing costs and complexity by migrating from mainframe and IBM WebSphere to modern approaches using integration layers such as APIs or microservices patterns.

  • Decreasing testing costs by adopting automation testing frameworks.

  • Increasing Straight-Through-Processing (STP) capabilities of services.

Key Requirements

  • Proficiency in Java (11+ essential, 17+ preferable).

  • Experience with Kubernetes.

  • Familiarity with Git.

  • Fluency in Unix-based systems and command-line interfaces.

  • Solid understanding of database technologies and SQL (Oracle preferred).

  • Experience with RESTful microservices and APIs.

  • Knowledge of HTTP Web technologies including JavaScript and preferably React.

Nice to Have

  • Experience working in a DevOps delivery team.

  • Understanding of application monitoring.

  • Knowledge of Spring/Spring Boot.