An Informatica Developer plays a critical role in data integration and management, ensuring accurate data flow across systems. Responsibilities include designing ETL processes, developing data mappings, and optimizing data workflows. Key skills include proficiency in Informatica PowerCenter, SQL, and data modeling. Typically working in tech-focused environments, they collaborate with data analysts and architects. Career progression may lead to senior developer, data architect, or team lead positions, fostering growth in data strategy and analytics.