A Linux Shell Scripting developer writes and tests scripts that automate tasks in the Linux operating system. They use the shell, a program that interprets command lines, to control software applications and manage system files. Their scripts can automate system maintenance tasks, like data backup and report generation, and can also manipulate text for processing data files. They debug and fix errors in existing scripts, and ensure scripts respond correctly to user input. They may also create custom scripts for specific tasks, such as monitoring system usage or deploying software, and may work closely with system administrators and software developers.