UJ Choi is a trilingual software engineer and video game producer with over two decades of experience in the industry. He studied Bachelor's in Computer Science and Engineering at POSTECH and has worked with major players in the gaming industry, such as Neowiz and DeNA. During his time as the CTO of "Lost Saga," a fast-paced 3D Action-RPG game, he contributed significantly to the game's development, achieving critical acclaim. UJ Choi specializes in mobile game development, project management, software engineering, optimizations, continuous integration, and F2P monetization. His skills also extend to public speaking and change management. UJ Choi's technical expertise and experience in video game production have led to multiple media features in major newspapers and magazines, such as Chosun Ilbo, Electronics Newspaper, and Microsoftware magazine.