Prompt Engineer

Willis Towers Watson; Greater London; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading global advisory firm in Greater London seeks a Prompt Engineer to bridge human intent and structured processes for LLM systems. The role requires strong communication, analytical skills, and systematic thinking. Responsibilities include breaking down business needs into structured instructions, designing effective prompts, and collaborating with technical teams to ensure quality results. Candidates should be comfortable interpreting code and enjoy learning about AI tools. An inclusive work environment is a priority for the company.

Qualifications

• Demonstrate strong communication and analytical skills.
• Translate complex business needs into structured instructions.
• Collaborate effectively with engineers and product teams.
• Spot and correct errors or ambiguities in AI interpretation.

Responsibilities

• Break down complex needs into step-by-step instructions.
• Design prompts for consistent AI results.
• Work with internal LLM tools for structured decision-making.
• Ensure prompts align with system functionality.

Skills

Strong language and communication skills

Ability to translate vague needs into concrete steps

Systematic thinking

Understanding code or logic

Enjoy learning new tools and frameworks

Collaboration with technical and non-technical teams

Job description

If you’re someone who understands our business deeply, has strong communication and analytical skills, and is naturally curious about how things work under the hood, you could be a great fit.
This role sits at the intersection of language, logic, and technology. Prompt Engineers help bridge the gap between human intent (especially when it’s messy or unclear) and the structured processes our large language model (LLM) systems can execute. You don’t need to write code—but you do need to be comfortable understanding it, reading through workflows (e.g., built in Python or Scripts), and thinking in systems.

The Role

• Break down complex or unclear business needs into structured, step-by-step instructions that can be interpreted by LLMs.
• Design and refine prompts that ensure high-quality, consistent results from our AI services.
• Understand and work with the logic of our internal LLM tools (e.g., Python, Scripting) to guide the flow of information and decision-making.
• Collaborate closely with engineers and product teams to make sure your prompts align with how the system actually works.
• Spot and correct errors, ambiguity, or inefficiencies in how AI interprets input.

Qualifications

The Requirement

• Have strong language and communication skills—you write clearly, think in structure, and can explain complex ideas simply.
• Are good at translating vague needs into concrete steps (you’ve probably already done this for customers, stakeholders, or projects).
• Think systematically, enjoy solving puzzles, and like understanding how things connect under the surface.
• Can read and interpret code or logic without needing to write it yourself.
• Enjoy learning new tools and frameworks, especially in the AI space.
• Work well with both technical teams and non-technical stakeholders.

At WTW, we believe difference makes us stronger. We want our workforce to reflect the different and varied markets we operate in and to build a culture of inclusivity that makes colleagues feel welcome, valued, and empowered to bring their whole selves to work every day. We are an equal opportunity employer committed to fostering an inclusive work environment throughout our organisation. We embrace all types of diversity.

We’re committed to equal employment opportunity and provide application, interview and workplace adjustments and accommodations to all applicants. If you foresee any barriers, from the application process through to joining WTW, please email [e-mail]