Joung is a Senior Lecturer in the School of Minerals and Energy Resources Engineering experienced, mainly in United States and Australia, on rock mechanics, tunnelling support system, and numerical modelling. Currently, he teaches and researches primarily in the area of mining geomechanics. His research interests include tunnelling and underground space development, coupled behaviour of rock discontinuities, ground-structure interaction, and rock mechanics for caving mechanism. He completed his PhD degree in civil engineering with emphasis on geotechnical engineering at the University of Illinois at Urbana-Champaign. Prior to joining UNSW in 2013, he was employed at Parsons Brinckerhoff (PB) in New York City, US as a professional (registered) engineer.