Oregon State University (Pharmacy)

• Manager at Celgene
• CEO/Founder at NCE Sciences in CA
• City of Hope National Medical Center in CA
• Postdoc at University of British Columbia

Seoul National University (Medicinal Chemistry)

• Exelixis in CA, Director
• Affymax in CA, Staff scientist
• Memorial Sloan Kettering Cancer Center, NY, Post doc
• National OncoVenture, Vice President
• Institut Pasteur Korea, Executive Director
• AriBio, Vice President

KAIST (Biological Science)

• Exelixis, Principal scientist
• Blade Therapeutics, Associate Director
• Gilead Sciences, Scientist
• University of California San Francisco, Postdoc/Research Scientist