Java Developer (Kafka, Spring Cloud, Angular)

Quick Facts

• Role: Java Developer (Kafka, Spring Cloud, Angular)

• Work model: Hybrid (at least 1 day/week in the Warsaw office)

• Domain: Fraud detection systems in claims handling

Description

Build and evolve microservices that support claims reporting and handling processes, including designing, implementing, and maintaining APIs and integrations. Contribute to system design (functional and non-functional requirements), improve scalability for high transaction volumes, and maintain high code quality with automated tests, engineering best practices, and code reviews. Use AI and agentic AI tools throughout analysis, implementation, testing, and maintenance within a cross-functional Agile team.

Responsibilities

• Develop and enhance microservice-based systems for claims reporting and handling

• Design, implement, and maintain APIs and inter-system integrations

• Participate in defining system solutions and both functional and non-functional requirements

• Optimize business processes by delivering efficient, scalable software

• Build and improve automated tests; apply engineering best practices and ensure code quality

• Use AI/agentic AI tools in analysis, implementation, testing, and ongoing maintenance

• Perform and participate in code reviews using modern quality and security tooling

• Collaborate in Scrum ceremonies and within a multidisciplinary Agile team

• Co-create software delivery standards, including AI usage in the development process

• Work on systems with large scale and high transaction volume

Requirements

• 5+ years of experience with Java

• 3+ years of experience with Apache Kafka

• 5+ years of experience with Spring/Hibernate, Spring Boot, and Spring Cloud

• 5+ years of experience with SQL

• Knowledge of unit testing frameworks (JUnit, TestNG, Spock) and integration testing tools (Testcontainers, WireMock)

• Understanding of OOP and functional programming (FP) paradigms

• Knowledge of application containerization

• Knowledge of process engines and BPMN notation

• Knowledge of resilience patterns for distributed services

• Angular knowledge and experience building frontend applications

• Ability to use AI tools during software development

• Knowledge of application performance diagnostics tools

• Work availability in Poland and readiness to work from the Warsaw office at least 1 day

Benefits

• Work on high-scale, high-volume transaction systems in a fraud detection domain

• Opportunity to apply AI/agentic AI in real development and maintenance workflows

• Agile Scrum collaboration in a multidisciplinary team