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Jae Hwan Jeong has work experience as a Service Designer at KRAFTON Inc. starting from January 2019. 재환 also held the position of Game/Service Designer at PUBG Corporation starting from January 2019. Both roles have current end dates, indicating that they are still employed in these positions.

재환 정's education history begins in 2012 when they enrolled at the Korea Advanced Institute of Science and Technology. 재환 pursued a Bachelor's degree in Business Administration with a focus on Industrial Engineering and graduated in 2017. After completing their undergraduate studies, 재환 정 continued their education at the same institution and obtained a Master's degree in Industrial Engineering, specializing in Business Analytics from 2017 to 2019.