Senior AI Engineer

Portfolio Group Ltd
London, UK
28 days ago
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Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience level
Expert
Compensation
£80,000.0 - £100,000.0
Working hours
Regular working hours
Job source

Tech stack

Artificial Intelligence Amazon Web Services Python (Programming Language) Cloud Platform System Large Language Models Generative AI Machine Learning Operations Databricks

Job 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

Requirements

  • 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

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