Leonardo Wainer is a clinical psychologist who has shaped the landscape of schema therapy throughout Latin America. Graduating from the prestigious Pontifícia Universidade Católica do Rio Grande do Sul (PUC-RS) with registration CRP 07/31540, Leonardo pursued advanced training to position him at the forefront of psychological science in Brazil. He completed his master’s degree in clinical psychology at PUC-RS and is currently a PhD Fellow student at the same institution, where his research continues to push the boundaries of clinical practice and theory. His academic foundation is complemented by specialized training in cognitive-behavioral therapies through Wainer Psicologia and additional certification in acceptance and commitment therapy (ACT) from PRAXIS, creating a rich integration of evidence-based approaches. Leonardo holds Advanced Level certification as a Schema Therapist, Supervisor, and Trainer from the International Society of Schema Therapy (ISST), representing the highest level of professional recognition in the field. His achievement as the first Latin American Board Member of ISST marked a pivotal moment for schema therapy’s expansion across South America, opening doors for countless clinicians in the region to access world-class training and certification. Leonardo serves multiple leadership roles that amplify his impact on the field. As Coordinator of Research and Sciences at the Brazilian Association of Schema Therapy, he bridges the gap between clinical practice and empirical evidence. He directs and teaches at Wainer Psicologia, where he mentors the next generation of cognitive-behavioral and schema therapists. As Brazilian National Coordinator for certification with ISST, he ensures that Brazilian clinicians receive rigorous, standardized training that meets international excellence standards. What distinguishes Leonardo’s work is his commitment to making advanced psychological interventions accessible throughout Brazil and Latin America, building infrastructure for professional development that didn’t exist before his pioneering efforts.