Jeff obtained his Bachelor of Arts in History and Master's degree in Japan Studies from the Philippines. He then became an Erasmus Mundus scholar at Central European University (Hungary/Austria,) and University of Florence (Italy) where he earned MA in History and MA in Historical Science respectively. He also received MA in Humanities (Global History) from Tokyo University of Foreign Studies. Since 2015, he taught at the university level in the Philippines, where his primary areas of interest are modern history, colonial history, and Public history, material cultures, Japanese studies, and Philippine-Japan relations. After he graduated in 2023, he began teaching at a private university in Tokyo, focusing on modern Japanese society and history. For his tours, he loves to introduce the complex but very interesting history, culture and customs of Japan as he calls it his new home.