Senior Java Developer (Fraud Detection)

Quick Facts

• Role: Senior Java Developer (Fraud Detection)

• Domain: Insurance fraud detection and claims/benefits handling

• Work mode: Hybrid (1 day/week in Warsaw)

Description

You will work on a project building a modern Fraud Detection ecosystem for insurance claims, combining advanced analytics, automation, AI, and workflow capabilities. The role focuses on delivering and evolving Java-based distributed services, including integrations with existing internal/external systems and event-driven messaging. You’ll contribute to scalable, reliable, and resilient solutions that support business processes.

Responsibilities

• Implement, develop, and maintain a Fraud Detection system supporting claims handling processes

• Analyze business and technical requirements and design/implement Java solutions

• Develop and configure system capabilities using available product mechanisms and dedicated components

• Design and build integrations between claims systems and internal/external systems via APIs, Apache Kafka, and integration services

• Design scalable, high-performance, fault-tolerant architectures for distributed systems

• Collaborate on system architecture considering security, performance, and maintainability

• Support data migrations, environment integration, and new release deployments

• Create and evolve unit and integration tests; participate in Code Review

• Use AI tools to support coding, testing, requirement analysis, and documentation

• Work with business teams, architects, testers, and technology providers in an Agile/Scrum environment

Requirements

• Minimum 5 years of commercial Java development

• Minimum 5 years with Spring Framework, Spring Boot, Spring Cloud, and Hibernate

• Minimum 5 years working with SQL

• Strong knowledge of Apache Kafka and event-driven architecture

• Practical experience with distributed system design and development

• Knowledge of Domain-Driven Design (DDD) and ability to apply it

• Knowledge of OOP and functional programming (FP)

• Experience containerizing applications (e.g., Docker)

• Knowledge of workflow engines and BPMN

• Knowledge of resilience patterns for distributed services

• Experience with unit tests (JUnit, TestNG, Spock) and integration tests (Testcontainers, WireMock)

• Knowledge of tools for diagnosing and optimizing application performance

• Ability to use AI tools in everyday software delivery

• Ability to work effectively in a team and in an international project environment

Benefits

• Contract management support via a dedicated contract manager

• Opportunity to attend selected trainings, certifications, and conferences (rules and funding agreed individually)

• Option to re-apply for subsequent projects when project timelines change (#SmartChange)

• Participation in community initiatives and webinars (#edge1talks)

• Access to sports and training facilities through community activities

• Optional additional benefits such as private medical care, sports card, insurance, and psychological support (subject to availability and terms)

• Use a points-based cafeteria platform to choose available services/products