Taejun Oh

Software Engineer

I build products that solve real problems — from mobile fitness apps to AI-powered tools. Focused on clean architecture and shipping things people want to use.

About Me

Based in New York. I wake up at 4:20am on weekdays and hit the gym by 5 — at least four times a week. I like basketball, jazz, whiskey, and the occasional cigar.

I enjoy doing things alone — cafes, movies, museums, meals. Recently quit eggs after years of eating them for protein. Turns out they were causing all my skin problems.

Tech Stack

React React / RN
Next.js Next.js
TypeScript TypeScript
Python Python
FastAPI FastAPI
Supabase Supabase
PostgreSQL PostgreSQL
Redis Redis
Docker Docker
AWS AWS
Swift Swift
Rust Rust

Projects

PR! 5 x 225lb

GoLightWeight

Offline-first workout tracker for lifters with PR detection, 23 training programs, a 449-exercise library, a community feed, and an Apple Watch companion. iOS and Android.

P $12/hr

SpotTrove

Street parking legality, posted meter rates, and garage pricing on one map, with an AI sign scanner. iOS 1.6 live for NYC.

14 day streak

DoEveryday

Habit tracker across web, iOS, Android, and a browser extension on Chrome, Edge, Firefox, and Safari. Streaks, heatmaps, and a habit-strength score.

Great Whiskey Narrative

Just unwrapped

Point a camera at a label and get the distillery, region, tasting notes, and typical price. 688-bottle library with food pairings. Web live, iOS on TestFlight.

12 going

CrewOn

Coming soon

Club management in one place: events with RSVP and QR check-in, dues through Stripe Connect, a club feed, and a sponsorship marketplace. Web app built, member app in TestFlight.

2 1 3 wpm

TypeLeague

Competitive typing leaderboards — one test ranks you globally and by country, city, school, and company.

$

Mise

Back-office automation for independent restaurants: daily P&L, invoices, purchasing, inventory, and tax prep from live POS data. Active pilot in NYC.

72% 5h / 7d

ClaudeBeat

macOS menu bar app for real-time Claude AI usage. Notarized; installs with one Homebrew command.

$4.20 Claude · Codex · Cursor

Needlbar

macOS menu bar monitor for Claude Code, Codex, and Cursor: local token usage, cost, quota, and a system monitor. Notarized, on Homebrew, Rust core behind a Swift UI.

AI ext

JobTracker

Self-hosted job application tracker with a Chrome extension and resume keyword matching.

Under Wraps

A few new apps in the works. Names stay hidden until they ship — revealing each at launch.

?

In development iOS

A day out, planned in tabs. Each stop gets a tab; compare mode stacks every route on one map, with live subway guidance.

Retired

Projects that ran for real and were shut down on purpose. Kept here because the write-up is the useful part.