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Senior AI Engineer

Company

The Portfolio Group

Location

London, London

Posted

June 20, 2026

Position Overview

We are partnering with an established organisation currently investing significantly in its AI and generative search capabilities. They are looking to appoint a Senior AI Engineer to play a key role in designing and delivering production-grade AI systems focused on accuracy, scalability, and real-world impact.

This position sits within a growing AI function and will focus heavily on Retrieval-Augmented Generation (RAG), agentic workflows, evaluation frameworks, and LLM optimisation.

Key Responsibilities:

Design and develop scalable RAG pipelines and generative AI workflows
Build solutions using LangChain, LangGraph, and LlamaIndex
Implement retrieval strategies including reranking, chunking, and retrieval fusion
Develop agentic workflows with a focus on robustness and maintainability
Contribute to experimentation, evaluation, and AI quality frameworks
Support fine-tuning, instruction tuning, and model optimisation initiatives
Mentor junior enginee...

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