Senior Java Developer (6 month contract) in Belfast, United Kingdom

We are looking for an experienced Java Developer to join a fast-moving delivery team building a new regulatory reporting platform for a global financial services firm.

This is a key build focused on MiFID II transaction reporting, trade transparency, and instrument data — replacing a legacy system with a cloud-native microservices architecture (Java 17, Spring Boot, AWS, CI/CD).

You’d be working closely with BAs, compliance SMEs, and QAs to deliver genuinely business-critical features.

Key highlights

• Greenfield build – no legacy codebase
• Cloud-native tech stack (Java, Spring Boot, AWS, GitHub Actions, Jenkins)
• Regulatory focus (MiFID II, EMIR, SFTR, etc.)

Design and implement scalable, cloud-native backend components using Java and Spring Boot Collaborate with cross-functional teams to deliver features supporting transaction reporting, pre/post-trade transparency, and venue/instrument data flows Translate regulatory requirements into robust, auditable technical solutions Participate in Agile ceremonies and contribute to design, development, testing, and documentation Write unit, integration, and functional tests; support automated test pipelines Deploy services in AWS and contribute to CI/CD pipeline development 5+ years of Java development experience, with strong proficiency in Spring Boot Solid understanding of microservices architecture and RESTful API design Experience deploying to and developing in AWS or other public cloud environments Familiarity with Agile development practices and tools (e.g., Jira, Git, Jenkins) Strong communication skills and ability to work closely with non-technical stakeholders Previous experience in capital markets, especially transaction reporting, is highly desirable Knowledge of MiFID II, EMIR, SFTR, or other regulatory reporting regimes Experience with test automation frameworks (e.g., Playwright, TypeScript, BDD) Exposure to MarkLogic or similar document databases