Job Details

Principal AI Full Stack Engineer

  2025-11-17     Diagon Technologies     San Francisco,CA  
Description:

Overview


Diagon is a well-funded startup building the next-generation platform for sourcing high-tech manufacturing equipment — in minutes, not months. Powered by AI, proprietary data, and deep domain expertise, we help the world's most ambitious manufacturers move faster and smarter.


We're a lean, senior-led team moving fast to lead the reindustrialization of America.


Responsibilities



  • Build and ship core features across frontend and backend for Albus and the Diagon platform.

  • Design simple, effective UIs and workflows for managing manufacturing data.

  • Develop and maintain data pipelines to bring in high-quality information.

  • Create APIs to share structured knowledge and support sourcing workflows.

  • Use and extend AI tools to improve data quality, speed decisions, and automate tasks.


Qualifications



  • 7+ years shipping production software across the stack.

  • Strong backend and data modeling skills.

  • Experience with AI/LLM workflows, including: Calling LLM APIs (chat completions, embeddings, web search, etc.); Fine-tuning or customizing outputs using tools like LangChain, LlamaIndex, or RAG pipelines; Working with agent frameworks (e.g. AutoGPT, CrewAI, LangGraph).

  • Familiarity with our modern web app stack: TypeScript, Node.js, Next.js, React, Shadcn/ui, PostgreSQL, Drizzle.

  • Experience with large-scale data ingestion or web scraping.

  • Experience in manufacturing tech, marketplaces, or hardware sourcing.

  • Prior founding/principal engineer experience at a high-growth startup.

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