A Batch Processing Developer designs and implements batch processes - tasks that are automated to run on a schedule without human intervention. They write scripts or codes, often using languages like Java or Python, to automate these tasks. These could involve data extraction, transformation and loading (ETL), system maintenance, or data analysis. They also test and debug these processes, ensuring they run smoothly and efficiently. Additionally, they document the process for future reference or modification. They must also troubleshoot any issues that arise during batch processing, making adjustments as necessary to ensure optimal performance and accuracy.