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# Senior AI Engineer

- **Company:** Portfolio Group Ltd
- **Location:** London, UK
- **Experience:** Expert
- **Salary:** £80,000.0 - £100,000.0
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Amazon Web Services, Python (Programming Language), Cloud Platform System, Large Language Models, Generative AI, Machine Learning Operations, Databricks
- **Published:** July 17, 2026
- **Apply:** https://find.jobs/jobs-near-me/apply/ats-redirect/?id=2874394285-2

## About the Role

* Strong Python engineering experience
 * Commercial experience building production-grade AI/ML systems
 * Hands-on experience with RAG architectures and LLM workflows
 * Experience with LangChain, LangGraph, and/or Llama Index
 * Understanding of evaluation methodologies for generative AI
 * Experience working within scalable cloud environments (AWS preferred)
 * Ability to operate in a senior or technical leadership capacity

Desirable:

 * Graph-RAG experience
 * Databricks exposure
 * Experience deploying customer-facing AI systems

## 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., * 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 engineers and contribute to technical best practices


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