A Legato Networker developer is responsible for managing and maintaining the EMC Legato Networker backup software. Their tasks include designing and implementing backup solutions, troubleshooting any issues, and ensuring data recovery processes are effective. They also configure and monitor the system for optimal performance, and ensure it aligns with the organization's disaster recovery strategy. They work closely with other IT professionals to ensure the software integrates well with existing systems. Additionally, they may also be responsible for training other staff members on how to use the software, and staying updated on the latest advancements in data backup technology.