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Lead Developer

London, United Kingdom💼 Full-time🗓 2026-04-01 → 2026-09-26

Core

Design, build, and operationalize high-performance, data-intensive Java and Python applications with embedded AI capabilities for global financial index calculations.

Role type

Senior hands-on IC Lead Java Engineer (AI/Financial Systems)

Builds

Next-generation FTSE Russell Index Platform and client-facing financial products

Domain

Financial Services / High-Frequency Trading / Algorithmic Indexing

Deliverable

production ML models | product features

Required skills

Java, Python, distributed systems, microservices, REST APIs, RDBMS, CI/CD, Docker, Kubernetes, JVM profiling, algorithmic design, AI/LLM integration

Preferred skills

Team leadership, financial market data domain knowledge, in-memory caching, Spring Boot, Redis, Kafka, BDD frameworks, Agile management

Technologies

Java, Python, LangChain, LangGraph, Oracle, SQL Server, Postgres, Jenkins, GitLab, Docker, Kubernetes, Redis, Kafka, Spring Boot, Cucumber, JBehave, Karate

Responsibilities

Design and maintain complex backend applications; architect performance-critical index computation services; lead end-to-end project delivery; build automated test suites; provide Level 3 production support; mentor junior engineers

Seniority

Senior, hands-on IC with leadership responsibilities

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