DEVNAMU
/ Nam Woo-hyun
Work

Products built. Operations improved.

A record of how I turned complex workflows into interfaces, APIs, and data structures across an independent product, public systems, transportation, and subscriptions.
Selected Work

Flagship cases across shipping, complex workflows, and operational data

03
Read Jango case study
Jango home screen showing the weekly briefing, today's recipe recommendation, and expiry overview at a glance
Personal Project · 2026 · App Store and Google Play launch · v1.4.0

Jango

Live on both stores · v1.4.0
My Role · Product · Mobile · Backend · Admin · InfrastructureProblemPeople missed expiring ingredients because tracking, recommendations, and shared spaces lived in separate flows.
Verified outcomeVersion 1.4.0 is live on both the App Store and Google Play for iOS and Android.
React Native
Expo
TypeScript
NestJS
GitHub
View on the App Store
View on Google Play
Read KCSC Digital Construction Standards Pilot Support System case study
ANONYMIZED WORKFLOW · OPERATIONAL MAPKCSC Digital Construction Standards Pilot Support System
Hierarchical editor
01Standards
→
02Review items
→
03Variables
→
04API Center
Tree
Editor
Query
Role
A standards-map flow that keeps selection, editing, and execution context together
C&Net

KCSC Digital Construction Standards Pilot Support System

Pilot operation · Aug 2026
My Role · Frontend Development & UX Enhancement
Verified outcomeAs of August 2026, the live pilot provides standard and user libraries, the API Center, software and manuals, and support boards.
Read BIMS Bus Information Management System case study
ANONYMIZED WORKFLOW · OPERATIONS DATABIMS Bus Information Management System
Admin interface
01Buses
→
02Routes
→
03Operations
→
04Save & validate
Table
Filter
CRUD
Spring API
An admin flow for querying and managing transportation data around real work
C&Net

BIMS Bus Information Management System

In Development
My Role · Full-stack Development
Verified outcomeAdded bus, route, and operations workflows, map monitoring, operations dashboards, and access history screens to the admin system under development.
Additional work

Professional cases that broaden the range

02
Read Subscription Web & App Platform case study
ANONYMIZED WORKFLOW · SERVICE DATASubscription Web & App Platform
Web + API
01Auth
→
02Products
→
03Subscription
→
04Account
SSR
NestJS
PostgreSQL
Docker
Connecting the user experience, APIs, and data model into one subscription flow
Get&Show

Subscription Web & App Platform

Development Completed
My Role · Full-stack Development
Verified outcomeImplemented the core authentication, product, and subscription flows through connected React and Next.js screens, NestJS APIs, and PostgreSQL models.
Read GIS Facility Lookup System case study
ANONYMIZED WORKFLOW · LOCATION DATAGIS Facility Lookup System
Delivered system
01Map search
→
02Facility marker
→
03Detail panel
→
04Action
Map
Marker
Panel
Responsive
A GIS workflow that brings location data and details into one navigable interface
KMIS Co., Ltd.

GIS Facility Lookup System

Delivered
My Role · Frontend Development
Verified outcomeImplemented a GIS business UI connecting map markers, popups, lists, and detail panels.