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Lead Machine Learning Engineer

London Stock Exchange

Skills

Required

  • Python development
  • LLM
  • agent frameworks
  • Model Context Protocol MCP
  • agentic reasoning patterns
  • server and tool patterns
  • FastAPI
  • REST API design and
  • Containerisation
  • Kubernetes‑based deployment
  • prompt engineering
  • RAG‑based architectures

Preferred

  • AI
  • LSEG
  • quality control
  • AI Assist

Join LSEG's Corporate Engineering AI team as a Lead Machine Learning Engineer. In this role, you will be responsible for scaling safe, high-quality AI capabilities across the enterprise. You will own and operate core AI platforms, deliver a production-grade agentic AI platform, and establish evaluation, quality control, and governance mechanisms. The ideal candidate will have strong Python development experience, hands-on experience with LLM and agent frameworks, and practical understanding of Model Context Protocol (MCP).

Responsibilities

  • Lead the development and operation of core AI platforms, including LSEG AI Assist and the Question Answering Service (QAS).
  • Define standards, patterns, and platform capabilities that allow product teams to progressively move towards self-service contribution.
  • Establish evaluation, quality control, and governance mechanisms so MCP tools and Skills can be promoted through PTB/PTO and operated with confidence at scale.

Requirements

Strong Python development experience

  • Hands‑on experience with LLM and agent frameworks and agentic reasoning patterns
  • Practical understanding of Model Context Protocol (MCP), including server and tool patterns
  • FastAPI and REST API design and implementation experience
  • Containerisation and Kubernetes‑based deployment experience
  • Experience with prompt engineering and RAG‑based architectures
  • Ability to work across platform, product, and governance boundaries in an enterprise environment