Ever since Yos became involved in people development in the year 2000, Yos became more and more enthusiastic to explore psychological assessment and behavior to improve human productivity and wellbeing. After graduated from the Faculty of Psychology University of Gadjah Mada in 2004, he joined several private companies in training and recruitment as well as organizational development in Jakarta. In 2009, Yos decided to move to Jogjakarta and started to run his own psychological bureau while working for a private holding company as Head of Human Resources Development & General Affair. Yos has been with Better Work as Enterprise Advisor since 2013.