Senior AI Software Engineer - GenAI & LLM Systems

Mayfair IT is seeking Senior AI Software Engineers, GenAI Engineers and LLM Engineers to build, deploy and support enterprise-scale AI-enabled applications for secure public sector environments.

Roles require strong foundations in Node.js and/or C#/.NET, with hands-on experience creating AI-powered systems using LLMs, RAG, and agentic AI patterns. Candidates should be familiar with GDS standards and GOV.UK Design System, and be prepared for government security requirements.