Johann is a South Korean-born sommelier with over 15 years of experience in the hospitality and wine industry. He has worked in various countries, including Korea, Afghanistan (ISAF-NATO), India, Japan, the USA, New Zealand, Italy, and Hong Kong. Johann used to work as Executive Head Sommelier at Black Sheep Restaurants for over 6 years and recently joined one of Asia's biggest private wine club projects, 'Club Batard,' as Head Sommelier.

To broaden his understanding of the wine & hospitality business, Johann has obtained several wine and hospitality-related qualifications, including the A.S.I. (Association de la Sommellerie Internationale) Diploma, WSET Level 3 Sake, WSET Level 3 Wine & Spirits, FWS, and F&B Management from Cornell University. In 2023, Johann passed the Advanced Sommelier exam provided by CMS (Court of Master Sommeliers) and is currently preparing for his first attempt at the Master Sommelier exam.