Lead Developer
London Stock Exchange Group7 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
Categories
About London Stock Exchange Group
London Stock Exchange Group (LSEG) provides market infrastructure, financial data, and analytics to banks, asset managers, and corporations. Its businesses span capital markets (London Stock Exchange), post-trade clearing (LCH), and information services including FTSE Russell indices and the Refinitiv data platform, funded by transaction fees, subscriptions, and licensing. Headquartered in London and publicly listed on the LSE, the group serves global customers seeking trading, clearing, benchmarks, and enterprise data solutions.