Ruby on Rails, Coffeescript, JQuery, Node.js

Jai-Gouk is an extremely driven Ruby developer. He has been an invaluable asset at Seconds, and was able to contribute with very little direct supervision. He'd be an asset to any dev team.

Jai-Gouk showed Agile way to our team.
We now use Pivotaltracker and pomodoro technique in our team.
He's a passionate about what he does.
I highly recommend Jai-Gouk for any position in the future.

Jaigouk is a very bright ruby developer. He's always eager to learn and try out new things. It's been lots of fun working with him and I highly recommend him.

As a student who studied artificial intelligence (AI) under my guidance at Seoul National University of Technology, Mr. Kim has since kept in touch with me and has consulted me about his important career decisions. He has impressed me with his constant, determined and systematic efforts to develop himself as a graduate.
The academics at SeoulTech are most challenging, and Mr. Kim fulfilled all the requirements with the added challenge of honors and advanced courses. One of the requirements in my advanced class is to prepare tutoring sessions and guidance for the beginners. With Mr. Kim’s superior knowledge and involvement in the web services skills, including proficiency in numerous programming languages, he developed a strong sense of confidence with a charming attitude. Mr. Kim is highly respected by his classmates for his willingness to help anyone anytime he can.
I would like to say that I know Mr. Kim to be an able, conscientious, highly motivated man with keen insights as well as a deep interest in intercultural communication and international business. I sincerely recommend Mr. Kim as the ideal candidate for any position in your organization. Many thanks.