Lead Developer
London Stock Exchange Group5 months ago
London, United KingdomStaff+
Responsibilities
- Design, develop, integrate, and maintain complex Java and Python applications for the FTSE Russell Index Platform.
- Architect and enhance distributed services supporting large-scale, performance-critical index computations.
- Build and embed AI-powered features using LLMs, LangChain, LangGraph, and agentic AI frameworks.
- Establish safe, scalable, traceable, and production-ready AI deployment practices across internal platforms and external products.
- Lead projects end to end from requirements and design through development, testing, deployment, and operations.
- Build and maintain automated test suites for performance, scalability, and security.
- Diagnose production issues, perform root-cause analysis, and deliver Level 3 support and fixes.
- Conduct peer reviews, provide technical leadership, and mentor junior engineers.
- Collaborate with Product Managers, UX, and globally distributed engineering teams.
Requirements
- 12+ years of hands-on backend software engineering experience.
- Strong algorithms, data structures, problem-solving, and scalable-solution design skills.
- Expertise in Core Java, Python, distributed data-intensive systems, microservices, REST APIs, and relational databases.
- Experience with CI/CD tools, DevOps automation, Docker, Kubernetes, JVM profiling, and performance optimization.
- Prior Level 3 production support experience.
- Experience with LLMs, LangChain, LangGraph, and agentic AI frameworks.
- Preferred experience leading or mentoring engineers and working in financial services or with financial-market data.
- Preferred familiarity with in-memory caching, Spring Boot, Redis, Kafka, and BDD frameworks such as Cucumber, JBehave, or Karate.
- Experience running Agile teams is preferred.
Benefits
- Personal development supported through formal and informal learning tools.
- Healthcare, retirement planning, paid volunteering days, and wellbeing initiatives.
- Equal-opportunity employment with reasonable accommodation for religious practices, mental health needs, and physical disabilities.
- Collaborative, creative, and globally distributed work environment across LSEG's operations in 65 countries.
Tech Stack
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