Demonstrating leadership in the role of Junior Developer and subsequently as Product Owner, competencies were proven in updating the PDV PAF front-end system for tax regulation compliance. Responsibilities in development involved implementing new features and rectifying critical bugs to ensure system stability and performance. In the capacity of Product Owner, communication channels between development teams and stakeholders were efficiently managed, ensuring customer requirements were accurately conveyed and promptly addressed. The culmination of these efforts resulted in the successful, timely, and budget-compliant launch of the update, satisfying customer expectations while adhering to tax regulations. This achievement highlights essential leadership, teamwork, and technical skills crucial for agile software development.