FRONTEND ENGINEER · DAEGU, KOREA

Hello. I'm Park Sangmin, a frontend engineer.

I build products that are easy for people to understand and practical for teams to maintain.

View work

SELECTED WORK

I turn complex problemsinto operable products.

Four selected projects, organized around the problem, the decisions I made, and the outcome.

01 Notiiv Company · Production

Operating four product apps and shared packages as one monorepo

4 apps: One product monorepo
12 packages: Shared foundation
BFF + WebAuthn: Authentication boundary

View case

Notv

The moment your meeting ends,
your smart business begins
Notv

9:30

Recording

Meeting with Seongtae Kim2026.05.12Bigtablet HQ · Meeting Room 9F

00:38

Memo mode

02 Bigtablet Design System Company · Open Source · NPM

From a component set to an interface platform for assembling and validating products

40+: Public components
11: Token domains
68: Story files

View case

GETTING STARTED

Introduction

Browse shared components and design tokens used across Bigtablet products in Storybook.

Bigtablet Design System

Label

03 Bigtablet Intranet Company · Flutter App · Production

Connecting collaborative work and state inside one Flutter app

Flutter: iOS and Android app
BLoC + SQLite: State and offline cache
SSE + FCM: Real-time and push

View case

9:41

Home●

○4Alerts

□2Approvals

◇7Mail

CalendarView all

월3화4수5목6금7

Weekly product meeting10:00 · Meeting Room A

Recent noticesSSE · LIVE

August company scheduleToday

APP FLOW

HOMEMESSENGERWORK APPS

Cache appears firstSQLite · cache-then-network

Merge live stateSSE · FCM · deep link

Expose partial failureBLoC · recovery state

04 Boundra Open Source · Developer Tool

Checking TypeScript monorepo domain boundaries with a Rust CLI

5 rules: BR-001 through BR-005
10K files: Large fixture benchmark
164.20 ms: Measured analysis time

View case

OPEN SOURCE · RUST CLI BOUNDRA

Domain boundaries that fail before architecture drifts.

BR-001BR-002BR-003BR-004BR-005

boundra · check-boundariesRust CLI

$ pnpm exec boundra check-boundaries

Scanning TypeScript domain graph...

BR-004DOMAIN INTERNAL IMPORTERROR

domains/order/client/view.ts:18:7 import { createOrder } from '../payment/internal/create-order';

A domain cannot import another domain internal module.

SUGGESTION · import from domains/payment/public

MORE WORK

More work

Award-winning projects, community tools, technical writing, and interaction experiments in one place.

ABOUT

I understand the user flowand build structures teams can maintain.

I do not stop at implementation. I find where users get stuck and where teams repeat the same work, then solve both with clearer interfaces and maintainable code.

Flow

I start with the moment a user gets stuck.

Structure

I solve repeated work with shared systems.

Validation

I confirm outcomes through tests and records.

PARK SANGMIN FRONTEND ENGINEER DAEGU, KOREA

CONTACT

Have a productyou want to build together?

I am open to building new products and improving existing frontend systems and user experiences.

EMAIL GITHUB LINKEDIN

Hello. I'm Park Sangmin, a frontend engineer.

I turn complex problemsinto operable products.

Users

Bigtablet

All systems are operational

The moment your meeting ends,
your smart business begins
Notv

Introduction

Bigtablet Design System

More work

I understand the user flowand build structures teams can maintain.

Flow

Structure

Validation

Have a productyou want to build together?

Hello. I'm Park Sangmin, a frontend engineer.

All systems are operational

The moment your meeting ends,your smart business begins Notiiv

Flow

Structure

Validation

Have a productyou want to build together?

The moment your meeting ends,
your smart business begins
Notv