AI Prompt Engineer / Agent Builder

AI Prompt Engineer / Agent Builder

Posted 3 days ago by Absolute Applications

Negotiable
Outside
Remote
United Kingdom

Summary: The AI Prompt Engineer / Agent Builder role involves developing Claude-powered agents to enhance the marketing workflow, including content production and campaign optimization. The position requires a hands-on approach to transform problem statements into functional tools quickly. Candidates will manage multiple projects simultaneously while adhering to a defined delivery roadmap. This is a fully remote position, primarily for UK-based candidates, with a daily rate that is negotiable and classified as outside IR35.

Key Responsibilities:

  • Build a suite of Claude-powered agents for marketing automation.
  • Transform problem statements into production-ready tools.
  • Design prompt architecture and test against real marketing scenarios.
  • Iterate based on feedback and document the development process.
  • Manage multiple agents simultaneously and prioritize tasks within a delivery roadmap.

Key Skills:

  • Proven experience building with Claude or comparable LLMs.
  • Strong prompt engineering skills, including system prompts and output structuring.
  • Ability to create working prototypes from problem statements.
  • Experience in marketing, content, or communications is advantageous.
  • Comfortable working in a fast-paced, delivery-focused environment.

Salary (Rate): undetermined

City: undetermined

Country: United Kingdom

Working Arrangements: remote

IR35 Status: outside IR35

Seniority Level: undetermined

Industry: IT

Detailed Description From Employer:

AI Prompt Engineer / Agent Builder

Initial 3 to 6 Month Contract - extendable

Fully remote with very occasional visit to client site

UK based candidates only

Daily rate negotiable and OUTSIDE IR35

To build a suite of Claude-powered agents that automate and augment the full marketing workflow, from brief writing and content production through to campaign measurement and optimisation.

We're looking for a hands-on AI builder who can turn problem statements into working tools, fast.

They'll take scoped agent briefs and build production-ready Claude-powered tools — designing prompt architecture, testing against real marketing scenarios, iterating based on feedback, and documenting what you've built so the team can maintain and extend it.

They’ll work across multiple agents simultaneously, managing their own prioritisation within a defined delivery roadmap.

Skills and experience required:

  • Proven experience building with Claude or comparable LLMs — not theoretical, demonstrably shipped
  • Strong prompt engineering skills: system prompts, chain-of-thought design, output structuring, guardrails and escalation logic
  • Ability to read a problem statement and move to a working prototype without needing the brief to be perfect
  • Experience working in marketing, content, or communications contexts is a strong advantage
  • Comfortable working at pace in a delivery-focused environment with real stakeholder visibility