A Linux High Availability (HA) developer designs, implements, and maintains systems that ensure uninterrupted service in Linux environments. They work on HA solutions like Pacemaker, Corosync, or Linux-HA to prevent downtime and data loss during system failures. Their responsibilities include setting up and configuring HA clusters, debugging and resolving system issues, and optimizing performance. They also monitor system health, perform routine system updates, and ensure data security. They collaborate with other IT professionals to plan and implement disaster recovery procedures. A deep understanding of Linux operating systems, networking, and scripting languages is essential for this role.