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.

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.