Java Developer Fintech

Harvey Nash Technology WARSZAWA 2026-09-01

Java Developer (Mid/Senior) – Trading Systems


You will:



  • Develop backend systems for a client's trading desk, with growing focus on UI components alongside backend work

  • Build event-driven services using Kafka (basic production/consumption; no Kafka Streams required)

  • Work with a Kubernetes-based infrastructure using Argo CD (GitOps) and GitLab CI/CD for the SDLC

  • Contribute to monitoring and observability using Prometheus, Grafana and the Elastic Stack

  • Leverage AI-assisted development tools (GitHub Copilot, and openness to tools like Devin or Claude)

  • Collaborate closely with distributed teams based in London, India and the US


You bring:



  • Computer Science/Engineering degree or equivalent background

  • Minimum 3 years of commercial experience with Java and Spring Boot

  • Experience with Docker and Kubernetes

  • Experience with SDLC tools such as GitLab

  • Basic experience with Kafka (producing/consuming messages)

  • Strong communication and teamwork skills, comfortable in an international, distributed environment

  • Experience in the financial services sector is a strong plus
Requirements: Java