Research has established the vital role administrators play in the success and sustainability of high-quality early childhood care and education (ECEC) programs. However, many center-based program administrators assume their leadership roles by being promoted from a teaching position. Consequently, while they may assume their administrative role with a strong background in teaching young children, they often lack the specific education, specialized training, and experience needed to successfully lead and sustain a high-quality ECEC program. Adult learning theory, as well as research across many workforce sectors, including early childhood education highlights the need to align professional development opportunities with career development stages. This Research Brief provides an in-depth profile of the largest career development stage group: the proficient administrator. Building on the established characterization of proficient administrators as those who shift from struggling to juggling responsibilities, focus on improving their efficiency and effectiveness, and fit into the "conscious competence" learning stage, this study examines their perceived alignment between current and ideal work experiences, career origins, current role perceptions, levels of self-efficacy, and mastery of critical leadership competencies.