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Software Developer at Spider

Are you a builder who thrives on turning messy 'vibe-coded' prototypes into sophisticated, production-ready AI products? This London-based edtech startup is seeking a technical powerhouse to architect a RAG-powered knowledge graph that transforms how university students learn. You will lead the transition from a working prototype to university-ready pilots, owning the technical foundation across Next.js, Supabase, and advanced vector search. If you want to move beyond simple chatbot wrappers and build a deep retrieval layer that grounds AI in real course materials, this is your chance to own the architecture from near-zero with total autonomy.

Overview

Role overview

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.

Company

Spider

Spider

London-based AI edtech startup building a RAG-powered knowledge graph for university education

Responsibilities

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.

Candidate profile

Who this is a fit for

  • 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.

What makes it remarkable

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.

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