Software Developer at London-based AI edtech startup

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers. She will pick the best candidates from Jack's network. The next step is to speak to Jack. Job Title Software Developer Salary Not Disclosed Company Description London-based AI edtech startup building a RAG-powered knowledge graph for university education Job Description You will transform an early-stage "vibe coded" prototype into a production-ready AI study platform. By architecting a sophisticated RAG pipeline and refactoring the existing Next.js/Supabase codebase, you will help university students connect fragmented course materials into a cohesive, searchable knowledge graph that powers accurate, context-aware AI learning assistance. Location London, UK (Remote) Why this role is remarkable

• Direct technical ownership to architect a RAG pipeline from near-zero, moving beyond simple chatbot wrappers to create a genuine knowledge graph for education.
• High-impact opportunity to lead the technical transition from a working prototype to a stable MVP ready for upcoming university pilots.
• Total autonomy with a direct line to the founder, offering a fast-paced environment without micromanagement and a potential path to technical leadership.

What You Will Do

• Architect and optimize the RAG pipeline, including chunking strategies, embedding storage in vector databases, and retrieval logic for course materials.
• Refactor and clean the existing Next.js and Supabase codebase to improve maintainability, stability, and performance for real-world student testing.
• Implement core product features and modern UI components from Figma designs to create a polished, credible experience for university students.

The ideal candidate

• Proven experience with RAG architectures, vector databases (like pgvector or Pinecone), and optimizing LLM retrieval workflows for accuracy.
• Proficient in the full-stack TypeScript ecosystem, specifically building and deploying scalable applications using React, Next.js, and Supabase/Postgres.
• Pragmatic builder who excels at inheriting messy, early-stage code and making decisive trade-offs between speed and engineering excellence to ship MVPs.

Who are Jack & Jill? Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support. And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate. How does this work?

• Jack's an AI agent for job searching and career coaching. He works for you.
• Jill is the AI recruiter working for the company. She recruits from Jack's network.
• If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.

We never post fake jobs This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network. Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description. We appreciate this can make them look a bit suspect, but there isn't much we can do about it. Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.