Java Backend Developer

Quick Facts

Three experienced Java Developers are needed for a long-term transformation project in the insurance sector. The work focuses on building and evolving backend capabilities for fraud detection and claims handling, using modern cloud and AI-enabled tooling.

Description

You will develop backend services supporting fraud detection in claims processes. The role includes analyzing requirements, implementing solutions using configuration and dedicated components, and integrating internal and external systems via APIs and event-driven communication. You will also help design distributed backend architecture with a focus on performance, security, resilience, and regulatory needs.

Responsibilities

• Participate in implementing and developing a system supporting fraud detection in claims processing
• Analyze business and technical requirements and implement them using configuration mechanisms and dedicated components
• Design, implement, and maintain integrations between internal and external systems using APIs, event-based communication, and integration services
• Design and develop backend solutions considering functional and non-functional requirements
• Analyze and fix defects, implement changes, and plan future releases
• Evaluate available standard functionality and recommend optimal approaches (configuration vs extension vs dedicated components)
• Contribute to system architecture design, ensuring performance, security, resilience, and regulatory compliance
• Support data migration and environment integration activities
• Develop automated tests; participate in integration and system testing
• Use AI tools and an Agentic AI approach for analysis, design, implementation, testing, and documentation
• Participate in code review, configuration review, and integration solution reviews
• Work with business, architecture, integration, and testing teams; participate in Scrum events and improve software engineering best practices

Requirements

• Minimum 5 years of commercial experience in Java
• Very good knowledge of Spring, Spring Boot, Spring Cloud, and Hibernate
• Practical knowledge of Apache Kafka
• Very good knowledge of SQL
• Experience with unit and integration tests using JUnit, TestNG, Spock, Testcontainers, or WireMock
• Knowledge of Domain-Driven Design (DDD) and practical experience applying it
• Good knowledge of OOP and functional programming paradigms
• Knowledge of application containerization
• Experience working with process engines and BPMN notation
• Knowledge of design patterns and resilience mechanisms for distributed systems
• Ability to use AI tools in the software development process
• Knowledge of tools for diagnostics and application performance analysis
• Willingness to deliver services from the territory of Poland
• Willingness to work in a hybrid model with at least 1 day per week in the Warsaw office

Benefits

• Participation in a long-term transformation project
• Opportunity to develop fraud detection and business process automation solutions
• Work with a modern technology stack
• Collaboration with an interdisciplinary team of specialists
• Hybrid work model: only 1 day per week in the office
• Potential extension of cooperation after the current project phase