Over the past 15 years, I have led and contributed to several national and international research projects and have gained experience at institutions such as the Korea Advanced Institute of Science and Technology (KAIST), Korea Atomic Energy Research Institute (KAERI), PINSTECH, SESAME in Jordan, and the International Atomic Energy Agency (IAEA). Beginning with materials irradiation using research reactor for neutron activation analysis and extending to gamma ray spectrometry, radiochemical separation, the synthesis of nano-sorbents and functionalized resins, waste form development, and leadership of IAEA regional/coordinated research projects, I have gained broad experience in research, project management, and scientific leadership. My research portfolio bridges water decontamination, materials science, and radioactive waste management. My multidisciplinary research on materials development, radiochemistry, decontamination, waste recycling, and catalysis has yielded more than 48 SCI peer-reviewed journal articles, including 15 as first and corresponding authors, as well as 20 national and international conference presentations.