A Cognos / Business Intelligence Developer creates and manages business data reports using IBM's Cognos software. They design, develop, and implement ETL (Extract, Transform, Load) processes, models, and reports for data warehousing. They are responsible for troubleshooting and resolving data, system issues and ensuring data quality. These developers also assist in defining, testing, and implementing business intelligence solutions for the company, enhancing data visualization and reporting capabilities. They work closely with stakeholders to understand their business needs and translate them into technical requirements. Additionally, they provide training and support to users on Cognos tools and systems.