Senior Java Specialist - Remote ESB Modernization

About the Role

We are seeking a Senior Java Specialist for ESB Modernization to join our team at WISR HUB. This is a remote position based in Luxembourg, where you will play a critical role in modernizing integration layers within a complex IT architecture. As a Senior Java Specialist, you will be responsible for enhancing connectivity between systems in a Treasury Risk Management (TRM) ecosystem, ensuring efficient handling of market data and event-driven processing.

What You'll Do

• Develop interfaces within the TRM Connectivity Module using Java and Spring Boot.
• Implement services that expose data via web services, Kafka, MQ Series, and REST APIs.
• Integrate incoming data streams, including market data and events, into TRM systems.
• Apply object-oriented design principles and design patterns to ensure robust software architecture.
• Utilize test-driven development (TDD) methodologies to enhance code quality.
• Participate in test automation frameworks and quality assurance processes.
• Contribute to build, deployment, and release automation pipelines.
• Collaborate with cross-functional teams and support knowledge transfer throughout the assignment.

Requirements

• 11+ years of experience in software engineering with a focus on Java back-end development.
• Strong expertise in Spring Boot and object-oriented design.
• Proven experience in test automation and TDD; familiarity with Cucumber is an advantage.
• Solid background in web services (WSS) is essential.
• Hands-on experience with Kafka and/or IBM MQ Series.
• Experience with build and release automation tools such as Jenkins.
• Proficient in GitHub for source control and release management.
• Fluent in English (C1+ level).

Nice to Have

• Experience in complex, multi-stakeholder, regulated environments.
• Strong clean code and integration governance mindset.
• Ability to integrate quickly into an active program and deliver autonomously.

What We Offer

• Contribute to a high-impact ESB modernization program within a leading EU institution.
• Work on complex integration challenges in a treasury and financial data environment.
• High-visibility assignment with a clear technical scope.
• Fully remote engagement with minimal on-site requirements.