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This job expired on 29/09/2026. It no longer accepts applications.
Senior AI Engineer
The Portfolio Group · London
Job description
About the role
The Portfolio Group is recruiting for an established organisation that is heavily investing in AI and generative search. As a Senior AI Engineer you will design and deliver production‑grade AI systems that prioritize accuracy, scalability and real‑world impact.
Key responsibilities
- Design and develop scalable Retrieval‑Augmented Generation (RAG) pipelines and generative AI workflows.
- Build solutions using LangChain, LangGraph and LlamaIndex.
- Implement retrieval strategies such as reranking, chunking and retrieval fusion.
- Create robust, maintainable agentic workflows.
- Contribute to experimentation, evaluation and AI quality frameworks.
- Support fine‑tuning, instruction tuning and model optimisation initiatives.
- Mentor junior engineers and promote technical best practices.
Required profile
- Strong Python engineering experience.
- Commercial experience building production‑grade AI/ML systems.
- Hands‑on experience with RAG architectures and LLM workflows.
- Ability to operate in a senior or technical leadership capacity.
Required skills
- Python
- LangChain
- LangGraph
- LlamaIndex
- AWS (cloud environment)
- Databricks (desirable)
- Graph‑RAG (desirable)
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The Portfolio Group
London
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