Alimen came to CIE as part of a group of 9 educators sponsored by the Bureau of Non-Formal Education in the Philippines. While at CIE they studied NFE philosopy and methods and designed a series of training modules.
After returning to the Philippines, Alimen worked as a training officer at the University of Southern Mindanao (USM), Kabacan, North Cotabato and in 1998 was promoted to Training Specialist II. Subsequently in 2007 he became the Deputy Director for Extension at the same university, and then Director from 2009 to 2011.