Tien-Yun Lee-Johannessen graduated from Technical University of Munich in 2008 with an MSc degree of Computational Mechanics. She works primary with risk analysis and CFD studies. She is an experienced user of CFD tools FLACS (for gas explosion, ventilation and gas dispersion simulation) and KFX (for fire simulations).

Tien has experience with both offshore and land-based installations in various project phases. Tien is familiar with engineering programming and numerical methods. She has also participated in projects focusing on methodology and model development.