In the USA:* Civilian staff of Medical Squadron to test the drug abuse and health conditions of soldiers at March Reserve Base, US Air Force* Staff of Quality Control to handle the test equipment and documentation at Amphistar Pharmaceuticals* Primary healthcare provider as licensed Doctor of Chiropratic with the practice of personal injury, worker's compensation and rehabilitationIn Korea:* Manager of Business Development responsible for licensing of pharmaceutical products, strategic alliance and corporate planning for Korean pharmaceutical companies, Green Cross and CKD* Manager of International Sales and Marketing responsible for strategic planning of international business, negotiation and M&A at CKD* Manager of Global Business Unit responsible for strategic planning, business alliance and coordination/control of mid/long term projects for the regulated markets such as the U.S.A and the developing/pharmerging markets at CKD* Senior researcher responsible for vaccine development and commercialization, especially in non-clinical studies, global projects and RA/CRO at Bio R&D Center of SK Chemicals.* Chief researcher responsible for external R&D activities and coordination of working groups for the development of pneumococcal conjugated vaccine at Bio R&D Center of SK Chemicals* Manager/Chief researcher responsible for Non-clical studies for vaccine project, R&D Center Coordinator for NCS and Serology for PCV Co-development Project with Sanofi Pasteur, Research Quality AssuranceSpecialties: Doctor of Chiropractic license (California board, California Chiropractic Association)Certificates of First Aids and CPR (American Red Cross)