A Peoplesoft Developer specializes in crafting, implementing, and maintaining PeopleSoft applications to optimize business processes within an organization. Key responsibilities include system customization, integration, and troubleshooting modules like HR or Finance. Required skills encompass proficiency in PeopleTools, SQL, and application configuration. Typically working in IT departments, they collaborate with analysts, project managers, and end-users. Career progression includes advancing to roles like Solution Architect or IT Manager, offering opportunities for leadership in enterprise resource planning (ERP) systems.