Senior Java Engineer - FTSE Russell Index Platform

About the role

LSEG is looking for a highly skilled, hands-on Senior Java Engineer with AI proficiency to help build the next generation of the FTSE Russell Index Platform, which underpins the calculation and distribution of FTSE Russell's global family of indexes. The role is deeply technical, focused on designing, building, integrating and operationalising modern software and AI-driven capabilities across internal platforms and client-facing products, in a high-performance, data-intensive environment. It is a manager-level position.

Key responsibilities

• Design, develop and maintain complex Java and Python applications using modern engineering practices, and embed AI-powered features into mission-critical systems.
• Architect and enhance services that support large-scale, performance-critical index computations.
• Work with Product Managers, UX and engineering teams globally to deliver high-quality products.
• Lead projects end-to-end, from requirements and design through testing, deployment and operations.
• Build and maintain automated test suites for performance, scalability and security.
• Diagnose production issues, identify root causes and deliver Level 3 support and fixes.
• Conduct peer reviews, provide technical leadership and mentor junior engineers.

Required profile

• 10+ years of hands-on backend software engineering experience.
• Ability to support the organisation's AI adoption journey and establish engineering best practices for safe, scalable, traceable and production-ready AI deployments.
• Prior exposure to Level 3 production support.
• Preferred: experience leading or mentoring a team, experience in financial services or with financial market data, and a background as a Scrum Master or running Agile teams.

Required skills

• Core Java and Python; microservices and REST APIs.
• RDBMS (Oracle, SQL Server, Postgres); CI/CD tools (Jenkins, GitLab) and Docker, Kubernetes.
• JVM profiling and performance optimisation.
• Nice to have: in-memory caching, Spring Boot, Redis, Kafka, BDD frameworks (Cucumber, JBehave, Karate).