AI/ML Engineer

AI/ML Engineer Up to £160,000 King's Cross, London (3 days a week) This is an opportunity to join a well-funded AI business at a pivotal stage of growth, building production-grade AI systems that solve complex, real-world problems. You'll work on agentic AI, retrieval systems, evaluation frameworks and enterprise-scale LLM applications, with the chance to influence both technology decisions and product direction. THE COMPANY They are an ambitious technology business developing an AI-powered platform that helps investment professionals access information, automate complex workflows and make better decisions at scale. Their platform combines proprietary data, external sources and advanced AI capabilities within a secure enterprise environment. Backed by an established organisation with deep domain expertise and a strong client network, they offer the agility of a startup alongside the stability and resources of a proven business. The engineering team is being built with a strong emphasis on ownership, collaboration and technical excellence. THE ROLE As a AI/ML Engineer, you will help design, build and operate the LLM-powered systems at the core of the platform, taking AI products from experimentation to reliable production deployment. Specifically, you can expect to be involved in the following: - Building multi-step AI agent workflows using modern orchestration frameworks - Developing production-scale retrieval augmented generation (RAG) systems - Creating evaluation frameworks, testing infrastructure and monitoring capabilities for AI applications - Designing retrieval pipelines including embeddings, vector search, reranking and knowledge retrieval - Working with graph-based retrieval and data modelling approaches - Optimising AI systems for accuracy, latency, scalability and cost efficiency - Integrating leading foundation models into production environments - Collaborating closely with engineering leadership to shape technical direction - Mentoring engineers and helping establish best practices for AI development at Lead level - Contributing across the full software development lifecycle using Python and cloud-based infrastructure SKILLS AND EXPERIENCE The successful AI/ML Engineer will have the following skills and experience: - Strong Python software engineering expertise - Commercial experience developing and deploying LLM or machine learning systems - Hands-on experience with LangGraph, LangChain or similar agent orchestration frameworks - Strong RAG experience, including embeddings, chunking strategies, vector databases and retrieval evaluation - Understanding of graph-based retrieval approaches or graph data modelling principles - Experience with evaluation-led AI development, testing frameworks and regression controls - Regular use of AI-assisted development tools such as Cursor, Claude Code or similar - Ability to balance model performance, reliability, security and operating costs in production systems Desirable skills include: - Qdrant, Weaviate or pgvector - Neo4j, GraphRAG and Cypher - MCP server development - LangSmith, LangFuse or similar observability platforms - Fine-tuning, embedding model selection or open-weight model deployment - Experience working with complex document-heavy environments BENEFITS The successful AI/ML Engineer will receive the following benefits: - Salary up to £130,000 - depending on experience HOW TO APPLY Please register your interest by sending your resume to Majid Latif via the Apply link on this page.