Senior ML Engineer - Enterprise AI Platform Delivery

London Stock Exchange Group; Greater London; On-site; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Healthcare

Retirement planning

Paid volunteering days

Wellbeing initiatives

Job summary

London Stock Exchange Group in London is seeking a Senior ML Engineer to advance safe, scalable agentic AI capabilities across the enterprise. You will design and operate MCP-based platforms and collaborate with product teams to deliver reliable AI tooling.

The role requires strong Python, expertise with LLM frameworks, FastAPI, and Kubernetes, plus experience with RAG and tool orchestration in an enterprise setting.

Qualifications

• Strong Python development experience with enterprise-scale systems.
• Hands-on with LLM frameworks and agent-based reasoning patterns.
• Practical understanding of MCP, server patterns, and tool orchestration.
• Experience with FastAPI, REST design, and API security considerations.
• Knowledge of prompt engineering and RAG-based architectures.
• Containerisation and Kubernetes-based deployment experience.

Responsibilities

• Design and build MCP servers and tools that expose enterprise systems and workflows to AI agents.
• Implement Skills that orchestrate tools, data, and reasoning into repeatable, governed workflows.
• Contribute to the LSEG AI Assist agentic harness, including planning, tool-calling, and orchestration logic.
• Build secure API wrappers where backend systems lack suitable authentication or entitlement models.
• Work closely with product teams in a build-for capacity, transferring knowledge and establishing reusable patterns.
• Shape the developer experience for MCP and Skills, including templates, contribution guidance, and standards.
• Collaborate with Quality Engineers and SREs to ensure solutions meet quality, governance, and operational readiness expectations.

Skills

Python

LLM frameworks

MCP

FastAPI

REST APIs

Kubernetes

Prompt engineering

RAG architectures

Job description

London Stock Exchange Group in London is seeking a Senior ML Engineer to advance safe, scalable agentic AI capabilities across the enterprise. You will design and operate MCP-based platforms and collaborate with product teams to deliver reliable AI tooling.

The role requires strong Python, expertise with LLM frameworks, FastAPI, and Kubernetes, plus experience with RAG and tool orchestration in an enterprise setting.