It is important for students to be engaged in any given course. For EFL pre-service teachers, being engaged in a course is essential because they can benefit linguistically, cognitively, and pedagogically. The present chapter presents a CALL-mediated course that was able to enhance EFL pre-service teachers' engagement by using Edmodo as its learning platform. Also, this study explores the contributing factors that a CALL-mediated course has towards their engagement. Three EFL pre-sercive teachers agreed to voluntarily participate in this exploratory study. Through in-depth interviews, they described their engagement and factors affecting their participation. The findings reveal that the EFL pre-service teachers were highly encouraged and inspired to utilize Edmodo and adopt the activities designed for the course. Obstacles and challenges encountered by EFL pre-service teachers are also discussed.