Sanderson
Prompt Engineer
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Prompt Engineer (Claude / Claude Code) – Mortgage Sales
£690 per day Outside IR35 Ideally London 1 day per week / Can be fully remote
A leading UK mortgage technology provider is looking for a Prompt Engineer with strong Claude and Claude Code experience to support the development of a new Mortgage Sales System. This is a new role within the business.
You'll work with stakeholders across the business to understand their requirements and translate them into high-quality prompts, instructions and AI workflows. You'll then test and refine them so the outputs are accurate, consistent and reliable. You'll work closely with the development team throughout delivery.
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This is not a developer role. A separate team builds and tests the application code, and your focus is on making sure the requirements, prompts and AI outputs are right.
What you'll need:
- Strong hands-on experience with Claude and Claude Code
- Prompt engineering experience, including prompt design and optimisation
- Excellent requirements gathering and stakeholder engagement skills
- The ability to understand business processes and translate them into effective prompts and AI requirements
- Experience testing and refining prompts to improve accuracy, consistency and quality
- A good understanding of LLM behaviour, guardrails and hallucination management
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Mortgage, lending or financial services experience would be a strong advantage.
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