Wantaek Choi
In the spring of 2001, he started his career as a military service special employee in East Soft and spent 15 years of programming experience until December 2016. He has been developing iOS apps for SK, Woori Bank and LG Electronics for the past seven years. I have been living a freelance life with a billion annual salary. In January of 2017, we established Happy Smile Corporation and lectured on iPhone app development on/offline and devoted to R & D on educational contents.