October 6, 2026
Java Developer
Senior • On-site
291,200 - 312,000 PLN/yr
Warsaw, Poland
Quick Facts
Role: Java Developer (Java microservices, APIs, integrations)
Focus: Claims-related processes, high-transaction systems, AI/agentic AI in the SDLC
Description
You will develop and maintain modern microservices-based systems supporting processes related to claims handling. The role includes building and evolving APIs and integrations between systems, implementing service-to-service communication (especially with Apache Kafka), and ensuring performance, scalability, and reliability. You will also use AI and agentic AI approaches across requirements analysis, implementation, testing, and maintenance.
Responsibilities
Develop and maintain microservices for claims-related processes
Design and build APIs and system integrations
Implement service communication mechanisms, especially with Apache Kafka
Ensure code quality through best practices, automated testing, and regular code reviews
Create and maintain unit and integration tests
Analyze application performance and troubleshoot issues
Apply AI/agentic AI solutions across the software development lifecycle
Identify practical use cases for agentic AI in day-to-day development work
Participate in code reviews and use tools supporting security and software quality
Work in an Agile/Scrum team and contribute to development standards and AI usage practices
Requirements
5+ years of Java programming
3+ years practical experience with Apache Kafka
Very good knowledge of Spring, Hibernate, Spring Boot, Spring Cloud, and SQL
Experience with testing frameworks/tools: JUnit, TestNG, Spock, Testcontainers, WireMock
Experience building and maintaining microservices-based applications
Knowledge of OOP and Functional Programming paradigms
Practical knowledge of application containerization
Knowledge of BPMN engines and BPMN notation
Knowledge of resilience patterns/mechanisms for distributed systems
Knowledge of Angular and experience building frontend applications
Ability to work in Agile/Scrum
Benefits
Private medical care
Sports card
Life insurance
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