South Korea
- Developed and maintained trading systems using Go. - Replaced HTTP communication between trading engine and matching engine with kafka which enhanced stability and performance. - Improved architecture and source code which led to 10 times increase for TPS. - Built a fraud detection system by cooperating with solution company VicTrade. - Developed trading related APIs on API server using Django. - Provided trading engine and matching engine as SaaS for Kasa Singapore and Kasa Thailand.
CoinManager is cryptocurrency portfolio management application. - Developed server APIs - Developed Ethereum wallet core library and web front-end. - Wrote ethereum based smart contracts. - NodeJS, ES6, ExpressJS, MySQL, Redis, AWS, SocketIO, Solidity, ReactJS
4-members hooked on football created mobile applications to satisfy our own needs. Footplr Manager for iOS - Team management mobile application for amateur football teams. - Manage players in team, record events(goals, fouls,... etc) during match, manage schedules, etc. Footplr for iOS - While Footplr Manager for iOS is for team's coach and managers, this app is for players. - Players rate each other and can check their statistics and team's schedule on the app. Lineup11 for iOS - Create lineup for football teams, share line-up image easily to team's players. - App has been used by journalists and published on many football news articles. - 700K Downloads.
Fandom is a start-up developing K-POP idol community mobile applications. Reached 800K MAU, 300K DAU at max. - Authentication system renewal. - Developed Server APIs for mobile client applications. - Java, SpringMVC, Tomcat7, AWS, Redis, MySQL.