Applied LLM Specialist

Applied LLM Engineer
Location: London, England (Hybrid)
Contract: Fixed term Contract; 4-6 months initially
Rate: Daily Rate (Outside IR35)

Our client, an award-winning advertising company, are hiring an Applied LLM Engineer to join their team on a 4-6 month fixed-term contract in London.  The successful candidate will take full ownership of the technical solution, designing and delivering an AI platform that automates advertising creations while incorporating human-in-the-loop feedback to maintain high-quality outputs.

Responsibilities

• Lead the architecture, development and delivery of the company’s platform.

• Design and build LLM-powered workflows for AI-assisted advertising generation.

• Implement human-in-the-loop feedback loops, capturing accept/reject decisions and rationale to continuously improve output.

• Deliver a web-based application with downloadable assets or shareable links.

• Ensure the platform maintains brand compliance and design quality, achieving approximately 95% AI accuracy with designer sign-off.

• Collaborate directly with designers and stakeholders to refine and optimise outputs.

• Take full ownership of all technical decisions and delivery outcomes.

Skillset

• Strong experience in full-stack software engineering.

• Hands-on experience deploying LLMs or Applied AI in production environments.

• Experience with AI-driven content generation, preferably visual or design-focused.

• Ability to design feedback-driven learning systems with human-in-the-loop processes.

• Strong product mindset, able to translate business needs into functional software.

• Comfortable collaborating with end users and non-technical stakeholders.

• Familiarity with Gemini, OpenAI, or similar LLM platforms is a bonus.

• Background in creative, design or media production environments is a plus.

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