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Senior AI Engineer

The Portfolio Group

london, england, United-Kingdom Full-time June 29, 2026
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Opportunity Description

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 mode...
Full-time IT & Technology

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