AI Prompt Engineer

Location: Windsor, Berkshire – Hybrid (1 day per week onsite)

Contract: 6 months plus possible extension

Rate: £600 per day

The Opportunity

We are recruiting an experienced AI Prompt Engineer for a six-month contract supporting a major digital transformation programme. This hands-on role focuses on designing, developing, testing and optimising production-grade Large Language Model (LLM) solutions across customer service, conversational AI, voice bots, chatbots and IVR platforms.

You will work with engineering, product and customer experience teams to deliver scalable, secure and reliable Generative AI solutions, including agentic AI workflows, Retrieval-Augmented Generation (RAG) and LLM evaluation frameworks.

Key Responsibilities

* Design, develop and optimise LLM prompts for chatbots, voice bots, IVR and messaging channels.

* Build agentic AI workflows using tool calling, orchestration and multi-step reasoning.

* Implement RAG, grounding techniques, prompt evaluation and regression testing.

* Develop AI guardrails covering Responsible AI, data privacy, PII protection, compliance and hallucination reduction.

* Integrate conversational AI solutions with CRM, knowledge bases and contact centre platforms.

* Monitor production AI performance, improve response accuracy and optimise customer experience.

* Manage prompt versioning, Git, CI/CD processes, deployment and release governance.

* Support UAT, go-live activities and production optimisation.

Essential Skills and Experience

* Strong hands-on LLM prompt engineering experience within production environments.

* Experience developing conversational AI, chatbots, voice AI or IVR solutions.

* Knowledge of agentic AI architecture, orchestration and AI agent workflows.

* Practical understanding of RAG, prompt evaluation and grounding.

* Experience implementing AI safety, security and governance controls.

* Familiarity with Git, CI/CD and software deployment processes.

* Strong communication skills across technical and business stakeholders.

Desirable Experience

* Voice AI, Intelligent Virtual Assistants (IVA) or IVR modernisation.

* Utilities, financial services or other regulated environments.

* Contact centre metrics including containment, deflection and CSAT.

Apply now if you are a hands-on AI Prompt Engineer, LLM Engineer or Conversational AI Engineer with proven production delivery experience