A Cascading developer designs, develops, and deploys data processing applications using the Cascading framework. They utilize Java or other programming languages to create scalable and reliable data workflows. They handle large datasets, implement complex algorithms, and manage data extraction, transformation, and loading (ETL) processes. They also work on debugging, optimizing, and maintaining these applications to ensure their efficiency and accuracy. Furthermore, they collaborate with data scientists and other stakeholders to understand data requirements and deliver solutions. They also need to stay updated with the latest industry trends and advancements in big data technologies.