Opennote
Live in productionUS · San Francisco · Consumer AI / EdTech
Opennote is a YC-backed AI study platform built around Galileo, an AI thinking partner that answers questions and explains concepts against a student's own notes and materials — replacing the five separate apps students usually juggle for notes, lectures, and flashcards. As part of the contract engineering team, we worked across the frontend notebook UI and the Galileo AI tutor integration, shipping feature work end to end. Opennote was used by 50,000+ students; it was acquired by Reducto in 2026.
MY ROLE
Contract full-stack engineering
STACK
Frontend · AI Tutor Integration · Feature engineering
STATUS
Live in production
LIVE URL
opennote.com
Real screens, not mockups
What the system does
Galileo AI tutor
Feature work on Galileo, the AI thinking partner that answers questions and explains concepts in context against a student's own notes and materials.
Notes, recorder & practice tools
Built out the notebook editor, the recorder that turns audio and YouTube links into instant notes, and inline flashcard and quiz generation.
Visual concept generation
Worked on the video and diagram generation library that turns a concept into a visual explanation on demand.
Stack
- Frontend Development
- AI Tutor Integration
- Feature Engineering
Where it stands
- Role
- Contract engineer across frontend and AI tutor integration
- Scale
- Used by 50,000+ students across the platform
- Status
- Live; acquired by Reducto in 2026
Need a system like Opennote?
Tell us what you are trying to ship. The engineer who built this one answers.