Jeff Xu
I dream of a world where we can be free from biology.
What I do
I build products end to end, from the membership engine and the money paths to the pictures, and I build the factory that makes the next product cheap. The goal behind all of it is on the front page: a real shot at taming biology, taken seriously enough to build tools for.
Product engineering
- TypeScript
- Next.js App Router
- React
- Node
- Python pipelines
Membership and money
- Stripe subscriptions and webhooks
- Patreon OAuth and sync
- Supabase Postgres, RPCs and row policies
- token ledgers with two-pass settlement
AI in production
- DeepSeek V4 Flash assistants with built fact sheets
- gpt-image-2 image generation at one quality tier
- image-to-3D pipelines
- claim ladders and citation verification
Proof
- clean-room builds
- guards proven by planted defects
- live customer-journey probes
- Playwright
Science communication
- a 759-fact bioelectricity bank
- four YouTube channels and their scheduling pipeline
- documentary and serial story formats
Projects
- The Site Factory — One shared engine that turns a folder of content and a palette into a live website: a brochure site in minutes, a membership site with logins, billing and gating in an afternoon.
- StarForge — A membership site for people who print miniatures: a catalogue of STL files, a browser modelling tool that does what slicers cannot, and a monthly drip of new things to print.
- Dusty Lighthouse — A Spanish graded-reader platform: books from A1 to B2, flashcards, a companion you talk to in Spanish, and a coin economy that turns reading into a game.
- Bioelectric Data Commons — A typed claim-graph of the bioelectricity literature: every published result as a claim with its species, its evidence tag and its paper, queryable as data.
- The Voltage Zoo — A science-fiction suspense channel set in a biopunk future, built on a fact bank of the real bioelectricity literature so every scare has a receipt.
- Client sites from the factory — Brochure sites built for other businesses in a day: their words, their photos, their five colours, a customer-service assistant that knows every page, and a review button.