johnston's docs
Chances are, you found this place through my other website. If not, then welcome. This is where I document my writing on technical topics primarily in software engineering, and occasionally other things that interest me as well as my past projects. Feel free to reach out with the links above if you'd like to chat.
Writing
Projects (some aren't deployed anymore)
- iOS
- SwiftUI
- WidgetKit
- Supabase
- Postgres
- Mac Catalyst
Fast home-screen notes that open straight into editing.
Published on the App Store, open source on GitHub, and free with no ads or paid features. Built around a simple workflow existing note apps make too slow: keep a note on the home screen, tap the widget, and edit immediately. Capache supports rich-text editing, account-based sync, email-code sign-in, and note history while keeping capture fast and seamless.
- Next.js (React)
- Go
- SSE & Websockets
- Postgres w/ PostGIS
- Redis Pub/sub
- AWS
Carpool matching platform for shared airport Uber and Lyft rides for UChicago students.
Web app that automatically matches riders based on travel time, airport, and other preferences. Launched over Thanksgiving and Winter Break, it reached 1,000+ verified users, created 300+ carpools, and saved students $10k+ in travel costs.
- React + React Router & Vite
- TypeScript (Express)
- MongoDB
- Google Cloud
Real-time, anonymous course feedback for UChicago classes, with direct professor responses.
An anonymous discussion board that lets students surface concerns during the quarter so instructors can respond immediately, improving on traditional end-of-quarter evaluations.
