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September 16, 2026

Senior Java Developer

Senior • On-site

140 - 165 PLN/yr

Warsaw, Maz, Poland

Quick Facts

  • Role: Senior Java Developer
  • Experience: Minimum 5 years in Java

Description

Join a strategic software transformation project at the intersection of business and technology. You will help build a modern ecosystem for handling claims and benefits, based on data, automation, AI, and workflow processes.

Responsibilities

  • Develop and maintain Java-based backend services in a distributed, data-driven environment
  • Work with Kafka and Spring ecosystem components to implement reliable integrations
  • Apply software quality practices, including unit and integration testing
  • Use BPMN/process engine concepts to support workflow-driven operations
  • Contribute to frontend development using React
  • Adopt AI tooling in the software development lifecycle
  • Diagnose and improve the performance of implemented solutions

Requirements

  • Strong Java knowledge (5+ years)
  • Strong Kafka knowledge (3+ years)
  • Strong Spring/Hibernate knowledge plus Spring Boot and Spring Cloud (5+ years)
  • Strong SQL knowledge (5+ years)
  • Knowledge of quality assurance and testing frameworks: unit tests (JUnit, TestNG, Spock) and integration tests (Testcontainers, WireMock)
  • Understanding of Functional Programming and Object-Oriented Programming
  • Experience with application containerization
  • Knowledge of process/workflow engines and BPMN notation
  • Knowledge of resilience patterns and mechanisms for services in distributed systems
  • React framework knowledge and experience building frontend applications
  • Ability to adopt AI tools during software development
  • Knowledge of tools for diagnosing performance of implemented solutions

Benefits

  • Modern, AI- and workflow-based transformation project with data-driven automation

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