20 case studies, one habit: ship it.

Play In The Box

Gamified Commerce · High-CCU Scale

Gamified e-commerce for Korean fandom merch — gacha box-opening, raffles and campaign drops including The First Fan × G-Dragon — built to survive its own launch-day traffic spikes.

38s → 620ms — p95 latency, at ~30k concurrent users

Saramin Vietnam

Recruitment · Job Platform

Recruitment platform for Saramin's Vietnam market — a Spring Boot backend, a React admin console and a Next.js public job site.

950+ — commits across backend, admin and job site in 2 months

Wavesgroup CIP

AI · Content Intelligence

Content-research platform for creators — save anything in one click, get it auto-tagged by AI, and research outlier YouTube videos.

3 apps — browser extension, web app and API — built solo

Wavesgroup Workspace

Internal · Work Platform

Company-wide internal platform — Jira-style task management plus an AI assistant that answers from the team's document library.

240+ — commits in 3 weeks, solo

Bricscon Storefront

B2B2C E-commerce

Gifticon distribution platform for the Korean market, with real-time inventory sync across KT Alpha and Cookies.

2 sources — KT Alpha and Cookies inventory, synced in real time

EV Deligo

Autonomous Delivery

Autonomous robot delivery deployed at Kunsan National University.

2 apps, 1 codebase — operator and rider, live at Kunsan National University

FAI-X

AI Fashion · AR

AI fashion assistant with AR virtual fitting.

On-device — TensorFlow Lite inference behind the AR fitting room

Holic Sports

Social Network · IAP

Social sports network connecting people through pickleball, swimming, running, gym and yoga.

5 sports — pickleball, swimming, running, gym, yoga

Ittaly

E-commerce · Live Shopping

Multi-platform Korean e-commerce — mobile app, admin dashboard and backend — rebuilt out of a legacy codebase.

3 surfaces — mobile app, admin dashboard and backend, rebuilt from legacy

SGOD Asset Management

Enterprise · E2EE Chat

Asset and personnel management for the enterprise, with end-to-end encrypted group and private chat.

E2EE — end-to-end encrypted group and private chat

Medical Support System

Healthcare Ecosystem

Three-entity ecosystem — doctors, hospitals, providers — for medical equipment logistics.

3 entities — doctors, hospitals and providers on one permission model

FlashSlide

E-commerce · Digital Marketplace

Presentation-template marketplace and design-agency site — browse, buy and download PowerPoint/Keynote decks.

Antue Media BPM

Media Production · BPM

Business-process platform for a media production company — orders flow through image, video and 3D creation, QC review, then automated publishing to an external stock-media marketplace.

4 stages — order → produce → QC → publish, tracked end to end

Channel Ops Workflow

Content Ops · Workflow

Content and channel-operations workflow — submissions move pending → revision → approved → published.

0 API calls — notifications computed by Postgres triggers alone

Uranus

Print & Document Management

Print-job management for a teaching center — staff upload class documents and queue print jobs with paper and duplex options.

DOCX / PPTX — page-counted automatically to drive per-class billing

Wavesgroup

SMM Platform · 24/7 Livestream

Social-growth ecosystem — an SMM order engine plus a 24/7 livestream platform pushing ffmpeg-encoded loops to YouTube.

20–25 streams — live per encoder host, with lease-based failover

Elook

E-learning · Proctored Exams

Online learning platform for Vietnamese university students — certification prep and general-education courses, sold through a VietQR + SePay checkout and taught in live cohorts.

Knotos

Relationship Chat · E2EE

An "anti-social-media" chat app built for one relationship at a time.

Lockboxy

Private Encrypted Vault

A private vault for photos, files, passwords and notes, encrypted on the iPhone behind the owner's own passcode.

Linkeeper

Local-first Bookmarking

Local-first bookmark manager for the links worth keeping — save straight from TikTok, Instagram or YouTube's share sheet without opening the app.