Transition coordinators are key players in the delivery of high-quality transition services, but little is known about how they interpret and enact their roles. This qualitative study examined how transition coordinators conceptualize their role and the factors that shape their effectiveness. Emergent themes revealed that transition coordinators broadly conceptualized their role as ambiguous, autonomous, evolving, and relational. They identified the responsibilities and initiatives they prioritized to drive structural and cultural change. Participants further identified relational and logistical factors that affected implementation of transition practices, highlighting the importance of buy-in from stakeholders. Clearly defined and well-supported roles may help transition coordinators leverage their specialized knowledge to ensure students with disabilities are prepared to pursue self-determined life goals.