Lead Developer,Backend Developer,DevOps Job London area,Greater London England UK,Software Development

Location: Greater London

We are seeking a highly skilled and hands-on Lead Java Engineer with AI proficiency to help build the next generation FTSE Russell Index Platform. This platform underpins the calculation and distribution of FTSE Russell’s global family of indexes and requires advanced engineering, high precision data processing, and deep collaboration across global teams
This is a deeply technical role focused on designing, building, integrating, and ope rationalising modern software and AI driven capabilities across internal platforms and client facing products. You will work with innovative technologies, contribute to complex algorithmic design, and drive engineering excellence in a high performance, data intensive environment
Core Engineering & Platform Delivery
Design, develop, and maintain complex Java and Python applications using modern engineering practices. Build / embed AI powered features into mission critical systems
Architect and enhance services that support large scale, performance critical index computations
Collaborate with Product Managers, UX, and engineering teams globally to deliver high quality products
Lead projects end-to-end through requirements, design, development, testing, deployment, and operations
Build and maintain automated test suites to ensure 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
Expertise in:

Core Java, PythonCI/CD tools (Jenkins/Git Lab), Dev Ops automation

Establish engineering best practices for safe, scalable, traceable and production ready AI deployments across internal platforms and external product suitesJVM profiling & performance optimisation

Good command of coding standards and Strong understanding of both high level and low level software design

Microservices, REST APIsStrong algorithms, data structures, problem solving skills, and ability to translate business problems into scalable solutions

Support the organisation’s AI adoption journey. Develop and enhance intelligent solutions using LLMs, Lang Chain/Lang Graph, and agentic AI frameworksRDBMS (Oracle/SQL Server/Postgres)
Docker, Kubernetes Building highly distributed, data intensive systems
12+ years of hands-on backend software engineering experience

Prior exposure to Level 3 production supportA proactive, creative engineering leader who enjoys solving complex problems, working hands-on with modern technologies, and driving AI enabled innovation. If you’re passionate about building resilient, intelligent, data intensive systems that power global financial markets, we’d love to hear from you

Experience with in financial services or with financial market data

Experience with BDD frameworks such as Cucumber, JBehave, or Karate Experience leading or mentoring a team of engineers

Experience running Agile teams

Familiarity with in-memory caching, Spring Boot, Redis, Kafka

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Lead Developer, Backend Developer, DevOps