Senior LLM Engineer / AI Engineer – Cheshire

My client is a fast-growing AI technology company building intelligent systems deployed in real-world, safety-critical environments. Their solutions combine advanced AI, data, and edge technologies to support decision-making and reduce risk in high-hazard industrial settings.
They are now looking to hire a Senior LLM Engineer to help design and deliver large language model–powered capabilities across internal platforms and customer-facing products.
This is a hands-on, production-focused role for someone with strong real-world LLM experience, not a purely research or experimental background.


The Role

You will:
*Design, build and deploy LLM-driven features into live products and platforms
*Work with both commercial and open-source LLMs, selecting the right model for each use case
*Build and optimise RAG pipelines, embeddings and vector-based retrieval solutions
*Develop APIs and services that integrate LLMs with existing AI, data and platform systems
*Optimise solutions for performance, reliability, latency and cost
*Collaborate with engineering, AI and product teams to identify and deliver high-value use cases
*Ensure all solutions meet security, compliance and data governance standards


What My Client Is Looking For

Essential
*Proven experience deploying LLMs in production
*Strong Python development skills
*Hands-on experience with:
*Prompt engineering and evaluation
*Retrieval-Augmented Generation (RAG)
*Embeddings and vector databases (e.g. FAISS, Pinecone, Weaviate, Chroma)
*Experience building LLM-backed services using FastAPI / Flask or similar
*Strong understanding of trade-offs around accuracy, latency, cost and scalability


Highly Desirable

*Experience working with or fine-tuning open-source LLMs
*Familiarity with LLMOps (monitoring, evaluation, guardrails, versioning)
*Experience integrating LLMs into complex or data-heavy systems
*Docker and Linux experience
*Background in regulated, industrial or safety-critical environments


The Right Mindset

*Pragmatic, delivery-focused and comfortable working with ambiguity
*Able to translate complex AI concepts into practical solutions
*Confident owning problems end-to-end, from idea through to deployment
*Motivated by building AI that has real-world impact


Why Apply?

*High-impact role with real ownership
*Opportunity to shape how LLMs are used in production environments
*Work on meaningful, technically challenging problems
*Collaborative engineering culture within a scaling business


Interested? Please Click Apply Now!

Senior LLM Engineer / AI Engineer – Cheshire