런드리고 서비스 기술총괄 백엔드, 프런트엔드, App개발, AI, Data 기술총괄 런드리고 서비스 개발 기술총괄 런드리고 스마트팩토리 자동화 시스템 기술총괄 개발조직 리딩 및 프로세스 정립, 시스템 아키텍쳐 수립 경영진 리더쉽의 일원으로서 비지니스 방향성 수립

Dev. Leader of Public Transportation in Naver Map service

Development of Project Anne Server-. Project Anne is a kind of rental service of clothes and Bags.-. design of RESTful APIs for Project Anne's client(iOS, Android)-. development of Account management APIs-. development of Anne coupon APIs-. development of interaction server with WMS(Warehouse Management System) server(Apache web server, Java, spring-mvc, Oracle)Design of improvement of T cloud service server side.(T could is similar to dropbox)
-. Introduction of the twemproxy for T cloud service(twemproxy: a proxy for memcached and redis protocol): SPF removedredis data shardingperl script for updating twemproxy configuration, which has redis master and slave information.(Redis contains feature which executes a specific script file when redis failover occurs.)

- Development of TSA(T cloud Storage API): 
Design of RESTful APIs for T cloud client
File upload/download API implementation
Using TLS(Thread Local Storage), data transferring between apache modules within one thread.TSA server overall design(based on apache module)

- Development of a kind of delivery server which works as intermediary between client side and SWIFT(openstack storage): 
Thumbnail image delivery(included redis interaction for a authentication)

- Development of Image Convert
Provided image resize, cropping and EXIF information
Based on ImageMagick APIs
A kind of a porting to Linux and performance improvement.(current version is based on Window server)

- Development of abuse prevention for web accesses(secuIP)
A simple apache module
Stores a request count for specific URI and saves the count in Redis
Client IP address is blocked when access count is excessed over a specific count and released automatically by redis key expiry time
source code open: https://github.com/skplanet/secuip- Development for shopkick services in California, USImplementation of server APIs based on Pylons framework for shopkick partners app.

Android application, Samsung Link development.

- Development of Device web server using Node.js on Android:
Design of RESTful APIs for javascript client(hybrid web app)
A Porting work of Node.js(v0.4.4) for Android using Android NDK.
A Javascript API Implementation using Node.js Addon(exactly Google V8 engine Add-on)
Technical leader in server-side development of device web server.

* Samsung link is an android application for sharing data on android devices(phone & tablet) and a preload application in Galaxy S3, S4.

Mobile server development.

- Development of a SIMPLE HTTP Server:
A HTTP proxy between mobile carrier server and naver application server based on linux epoll(Linux epoll, non-blocking socket)

- Development of Real-time Image converter using ImageMagick in the apache module environment:
Apache module implementation(a kind of plug-in library in apache web server)
Image resize and cropping using ImageMagick APIs-. Distribution Filesystem proposal(NHN Review 2008)Realtime file transferring between multi-servers using Inode Notification
-. Development Management(Team Leader, 1 year and a half)
A SMS message client
Text overlay on Image for WAP(not web) page on WIPI phoneContents converter from PC screen image and text to mobile contents (Project name: Golden gate)

Computer Vaccine Software Development in the UNIX/Linux Environment.

- Development of SMTP Virus Scanner server application: 
SMTP protocol implementation based on prefork processes

- Development of HTTP Virus Scanner server application: 
HTTP proxy implementation using select(), non-blocking socket

- Development of Real-time Virus Scanner in the Linux Environment: 
A kind of File I/O API Hook library based on Library Dynamic Loading(ld.so, LD_PRELOAD environment variable)