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Achievement: Pull Sharkx3Achievement: StarstruckAchievement: QuickdrawAchievement: YOLOAchievement: Pair Extraordinaire

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JaeBrian/README.md

Jaekook (Brian) Lee

Full-stack software engineer. I design, build, test, and ship software end to end.

Portfolio LinkedIn GitHub

About

  • Currently at VantaSoft, doing hands-on engineering across Amira Learning (enterprise EdTech), Telvana (AI voice agents), and CardSync (trading-card commerce).
  • Previously at Blink Labs building Cardano products, wallet and rewards flows, and edge infrastructure.
  • Co-created Zusty, a Zustand DevTools extension with 128 stars and an official ecosystem listing.
  • I use Claude and Codex agent workflows for repetitive work and test coverage, and I make the final call on what ships.

Open-source and side projects live here; my work account is @JaeBrianLee.

Selected work

Project What it is Stack
CardSync Trading-card inventory and commerce platform: scanning, pricing, claims, store credit, connected payments React 19 · Hono · Cloudflare Workers · PostgreSQL · Drizzle · Stripe Connect
Telvana Production AI voice agents with native tool calling, scheduling integrations, and operational reporting Python · Pipecat · Next.js · Express · Prisma · AWS Lambda
Amira Learning Enterprise assessment, reporting, access control, privacy, and multilingual work on an AWS data platform React · TypeScript · Python · GraphQL · DynamoDB · Athena
TosiDrop · Blink Labs Cardano rewards and claims platform, wallet analytics, multi-network apps, edge services React · Go · Cloudflare Workers · D1 · KV · R2
Zusty Chrome DevTools extension and middleware for Zustand: time travel, action logs, render metrics, store visualization React · TypeScript · D3 · Chrome DevTools
Ordo Privacy-conscious daily social-ranking iOS app, in external TestFlight SwiftUI · Supabase · Sign in with Apple · Fastlane
Fantasy Draft 2026 Draft analytics, live tracker, and pick advisor backed by a survival model and simulation audits (source) HTML · JavaScript · single-file build

Case studies, screenshots, and engineering notes for each project are on jaebrian.com.

Tech stack

Area Tools
Languages TypeScript, JavaScript, Python, Go, Swift
Frontend React, Next.js, Astro, Tailwind, Vite, D3
Backend Node.js, Express, GraphQL, Prisma
Cloud & data AWS, Cloudflare, PostgreSQL, Supabase, DynamoDB, SQLite, Docker, GitHub Actions
Mobile Swift, Apple
Testing Jest, Vitest

Also: Playwright, Hono, Drizzle, Stripe Connect, Cardano / CIP-30, Pipecat, OpenAI Responses, Athena, Fastlane, XCTest.

Pinned Loading

  1. oslabs-beta/Zusty oslabs-beta/Zusty Public

    Zustand Dev Tools

    JavaScript 128 2

  2. zustand zustand Public

    Forked from pmndrs/zustand

    🐻 Bear necessities for state management in React

    TypeScript 1

  3. Zusty Zusty Public

    Forked from oslabs-beta/Zusty

    Zustand Dev Tools

    JavaScript 1

  4. divvy divvy Public

    Forked from Jigglypuffers/divvy

    divvy - subscription plan splitter

    JavaScript

  5. SquareUp SquareUp Public

    Forked from SquareUpGoblinSharks/SquareUp

    SquareUp - MatchMaker for Sparring Partners

    JavaScript

  6. Cerebro-Meowstermind/cerebro Cerebro-Meowstermind/cerebro Public

    Forked from TW-Cerebro/cerebro

    Personalized learning via autodidactic tutoring powered by AI.

    JavaScript