Role Overview Insight Global are seeking a Senior Developer to design, develop, enhance, debug, support, maintain, and test payments technology applications that underpin a portfolio of global payments programmes. These include ISO 20022 migrations (CHAPS, TARGET2, SWIFT CBPR+), real‑time payments enablement, modernisation of payment engines/integration layers, and regulatory or scheme‑driven delivery across multiple regions. The Senior Developer will be a seasoned technologist contributing to the design and implementation of high‑throughput, mission‑critical services. This role does not manage direct reports but plays a key part in engineering delivery, cross‑team collaboration, and maintaining high standards of code quality, reliability, and technical execution. Key Responsibilities Develop and enhance Java‑based microservices, REST APIs, and event‑driven components. Implement solutions for ISO 20022 message formats, transformations (XML/JSON), validations, and routing. Build integrations using Mule ESB (or similar), messaging patterns, and Kafka/event streams. Write performant SQL/PL‑SQL queries for Oracle‑based transactional systems. Contribute to system designs, code reviews, and technical discussions (not full architectural ownership). Champion quality through TDD/BDD, automated testing (JUnit, Cucumber), and CI/CD best practices. Work closely with DevOps/SRE to support smooth builds, deployments, and production readiness. Collaborate effectively within Agile squads and across dependent teams, providing mentorship where needed. Produce documentation aligned to standards and support regulatory/scheme milestones. Must‑Have Experience Hands‑on Java/J2EE Development, microservices, REST APIs, and event‑driven architecture. Experience working with payments systems, middleware or payment messages (CHAPS, TARGET2, SWIFT, RTP, ISO 20022). Proficiency in Oracle SQL/PL‑SQL, including writing efficient queries for high‑volume systems. Solid understanding of XML/JSON structures and message mapping/transformation. Experience with Mule ESB or equivalent middleware, messaging tools, and Kafka. Strong understanding of Agile delivery, CI/CD pipelines, and DevOps practices. Skilled in unit/integration testing frameworks (JUnit, Cucumber/Litmus). Good communication skills and ability to collaborate in multi‑team delivery environments. Nice to Have Bachelor’s degree in Computer Science or related technical discipline. Certifications related to Java, Cloud, Kafka, MuleSoft, or SAFe. Experience with WebLogic/JBoss or other enterprise application servers. Background in payments platform modernisation or event‑driven systems. Familiarity with operational resilience or highly regulated technology environments.
Locations
ChesterCheshire
