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# AI Engineer

- **Company:** Harnham
- **Location:** London, UK
- **Salary:** £130,000.0 - £160,000.0
- **Contract:** Permanent contract
- **Skills:** LangGraph Framework, AI Evaluation, Artificial Intelligence, Automated Storage and Retrieval Systems, Software as a Service, Cloud Computing, Database Development, Python (Programming Language), Performance Tuning, Search Technologies, Software Engineering, AI Infrastructure, Datadog, Retrieval-Augmented Generation, Large Language Models, Generative AI, Backend, Agentic-AI, Fastapi, Build Management, Machine Learning Operations
- **Published:** October 27, 2026
- **Apply:** https://www.reed.co.uk/jobs/ai-engineer/57495986

## About the Role

* Strong commercial experience developing software and AI applications in Python.
 * Hands-on experience building and deploying LLM, generative AI, or machine learning systems in production.
 * Expertise with LangGraph, LangChain, or similar orchestration frameworks.
 * Experience designing and improving RAG architectures and vector database solutions.
 * Knowledge of AI evaluation, observability, and cloud-based software engineering best practices.

## Description

This is an opportunity to join a high-calibre engineering team building production-grade AI systems that solve complex, real-world business challenges. You'll work on cutting-edge LLM applications, agentic workflows, retrieval systems, and AI infrastructure, with the chance to influence technical direction and contribute to a fast-growing product at the forefront of applied artificial intelligence., * Build and deploy agentic AI workflows using tools such as LangGraph and LangChain.

 * Design and optimise RAG pipelines, including vector search, embeddings, and retrieval strategies.
 * Develop LLM-powered applications for document intelligence, classification, extraction, and reasoning.
 * Create evaluation frameworks and observability tooling to monitor AI performance, quality, and cost.
 * Engineer scalable backend services using Python, FastAPI, cloud technologies, and modern software engineering practices.