Prompt Engineer

Software Engineering Specialist - Prompt Engineering

3 month contract/£398 p/d Inside IR35

About the Role

Join our Consumer Digital team, where you'll design, deploy, and optimise chat and messaging platforms used by millions of customers daily. You'll ensure interactions are fast, accurate, and engaging, underpinned by intelligent AI that enhances the work of our customer service teams. This is a hands-on role in a fast-paced, innovative environment where your work directly impacts customer experience.

What You'll Be Doing

• Design, refine, and test prompts, instructions, and guardrails for LLM-powered features.

• Develop reusable prompt patterns, templates, and best practice frameworks.

• Analyse model outputs to identify gaps, inconsistencies, and failure modes, tuning prompts to improve accuracy, safety, and task completion.

• Collaborate with product, UX, and ML teams to create natural, intuitive conversational flows aligned with brand voice and accessibility standards.

• Integrate prompt architectures into production systems and provide guidance to cross-functional teams.

• Contribute to AI governance, safety reviews, and continuous performance monitoring.

Ideal Background

• Strong understanding of Large Language Models, Generative AI, and prompt engineering techniques.

• Experience designing or testing conversational flows, chatbots, or NLP applications.

• Excellent written communication and analytical skills.

• Strong problem-solving mindset with attention to detail.

• Desirable: experience with AI platforms such as Sprinklr, OpenAI, Azure, Anthropic, or Google GenAI; Python or Scripting experience; familiarity with evaluation frameworks; background in UX writing, content design, linguistics, or data science.

What You'll Receive

• Opportunity to work with cutting-edge AI technologies at scale.

• Exposure to complex, high-impact customer interactions and digital solutions.

• Career development in a team empowered to experiment, iterate, and innovate.

• Inclusive, collaborative culture that values curiosity, precision, and ethical AI practices.

Who Should Apply

This role suits engineers who are technically curious, user-focused, and collaborative. You'll thrive if you enjoy solving complex problems, iterating quickly, and driving measurable impact through AI-driven experiences.

One-Line Pitch

Shape the future of AI-powered customer interactions by designing and optimising conversational experiences used by millions across the UK.