Although employee engagement has been investigated by many scholars, there has been minimal research on this subject for millennial workforce. To bridge the research gap, the present study intends to examine employee engagement among millennial workforce of Saudi Arabia. In addition, the mediation effect of employee engagement on the relationship between antecedents; job characteristics, job satisfaction, and consequences; organizational commitment and intentions to quit is explored with social exchange theory (SET) as a theoretical underpinning. It tests the hypothesis by using data from 408 employees working in private sector companies located in Riyadh, Saudi Arabia through a self-administered questionnaire. SPSS Amos 25.0 was used to analyze the data. The results suggest that there exists a satisfactory condition of employee engagement among Saudi youth. Findings propose a significant positive relationship between job characteristics, job satisfaction, and organization commitment. Employee engagement was found to be a significant and partial mediator amid job characteristics, job satisfaction, and organization commitment. However, the results were not significant for the variable turnover intentions. There is a dearth of research on millennial workforce of Saudi Arabia, and this study would be perhaps, the first one to explore employee engagement in this context. It contributes to the current literature and theory development of employee engagement. Since the findings are based on limited millennial employees’ responses, there is no universal claim for generalization.