This study examines the relationship between transformational leadership types and the motivation of software engineers. The author uses full range leadership as a major theory and investigates how transformational leadership types influences the innovative behaviors of software developers by using a mediator of affective organizational commitment. For this, this study surveys 352 software developers working in 35 companies in Korea and analyzes the data using AMOS 24. The results show that charisma, inspirational motivation, intellectual stimulation and individualized consideration increase their affective organizational commitment affecting innovative behaviors positively in turn.