Freelance or Permanent Developer

 

You are looking for more than a one-off piece of consultancy work. You are an entrepreneurial developer who wants to be part of something from the ground up - someone who wants genuine skin in the game and to share in the commercial success of a product as it grows.

AdBuilder is an AI-powered job advert and job specification creation tool, designed to transform the way employers clarify their hiring needs. Version one has already been built and adopted by some of the most recognisable brands in the UK. We know it can do significantly more, and we are now looking for the right developer to help us get there.

The product is fully specced and the AI prompt layer is being developed internally, but you will be very much part of shaping that too. You will receive a structured revenue share arrangement from day one of commercial launch. The market is clear, the roadmap is defined, and a committed internal team is already in place.

WHAT YOU’LL BE BUILDING

AdBuilder guides HR and talent acquisition teams through a structured workflow, using AI at each stage to produce high-quality, ready-to-use outputs. The application includes:

A multi-step guided UI with conditional logic flowsIntegration with the Claude API for AI-generated content at each build stageDynamic output formatting that produces both polished job adverts and full job specifications

We have a detailed product specification and a clear phased delivery plan. The target for the next MVP is 3–4 months from start. From there, you will be involved in the ongoing evolution, improvement, and development of the product.

WHAT YOU BRING

3+ years of commercial development experience, ideally in SaaS or product environmentsStrong front-end skills - React or equivalent modern frameworkExperience integrating third-party APIs, ideally including AI or LLM APIsComfortable working to a defined spec while taking genuine ownership of technical decisionsAn entrepreneurial mindset - you want to build something that matters, not just fulfil a brief

WHAT’S IN IT FOR YOU

A fixed upfront fee for Phase 1 delivery (3–4 months)A revenue share arrangement formalised in writing from the outsetOngoing involvement as the product grows into Phase 2 and beyondDirect access to the decision-makers - no committees, no layers, no slow feedbackReal ownership of the technical direction as the product scales

JOB DETAILS

Location: Remote / UK preferred / Ideally East Midlands

Engagement: Freelance or Permanent

Fee: Upfront project fee + revenue share from launch

Start: As soon as possible

HOW TO APPLY

Send us a brief note about yourself, links to relevant work or projects, and your honest view on the engagement model. We are not looking for the longest CV — we are looking for the right person.

We will share the full product specification with serious applicants ahead of any further conversation.