Employee’s engagement become interesting topic in the field of organizational behavior. And it is imperative for organization to develop higher engagement. Current study examined the mechanisms that explain the relationship between effective human resource practice and employee engagement. It focuses especially in exploring the mediating role of organizational support and employee satisfaction in those relationships. Data collected using online questionnaire from 231 telecommunication employees in Jakarta and were analyzed using macro process to determine the causal relationship. Result reveals that perceived support and employee satisfaction fully mediate the relationship between effective human resource practice and employee engagement. Partial and sequential mediation effect of both mediators works as the antecedent of dependent variable. The study provides information and practical explanation for managers in telecommunication industry about why and how employee engagement can be enhanced. Future studies still needed to test wider participants from other branches in Indonesia to find out whether our findings can also be found in different circumstances using other method like structural equation model.