HealingPaper is the #1 medical beauty platform partnering with 2000 hospitals in South Korea and Japan with 3 million users.

• Developed a back-office web app where our in-house support team manages the Gangnam Unni users and medical doctors

• Developed an automatic sales statement managing system and reduced our in-house accountant's work by collaborating closely with the accountants and Shinhan Bank Open API engineers

• Introduced an in-app web view that can be deployed separately by collaborating with our mobile app engineers

• Developed the company blog (https://blog.gangnamunni.com) and the blog posting system in the back-office web app

Deep experience with Vue.js, Nuxt.js, Typescript, GraphQL

Class101 is an online learning platform with the classes material delivery solutions with 3.7 million users.

• Developed Class101 mobile application on Android & iOS platform with React Native

• Developed class101.net web application with React

• Testing a number of various features using Google Optimize.

• Developed web server with TypeGraphQL, Typegoose, Apollo Server

• Developed class101.net eCommerce system

• Streaming class videos about 4TB every day in HLS with AWS MediaConvert

• Developed a class editor where creators/directors can update class notes and upload videos

Deep experience with React, React Native, Typescript, MongoDB, Apollo GraphQL, GCP Firestore

BulkyTree is a multiplatform game development company

• Developed and maintaining the game server

• Developed and maintaining self-hosted GitLab CE

• Developed Server-side In-App-Purchase Verification with PaymentWall

• Developed Log Management System

• Developed Resource Patch System

• Developed Customer Inquiry Management System

Deep experience with AWS components such as EC2, EBS, Elastic Beanstalk Platforms (Go, Python, Node), RDS (Aurora), Redshift, VPC, S3, CloudFront

Nvius is developing Guik, a multiplatform service suggesting mobile games

• Played a key role in developing web platform using React, Typescript, Redux-saga

• Developed Android platform using Java and Android Studio

• Monitored effectiveness of SEO in terms of traffic using Google Search Console and Google Analytics