A KVM (Kernel-based Virtual Machine) virtualization developer designs, develops, and maintains virtualization solutions using KVM technology. They work on kernel modules, virtual machines, and hypervisors to help businesses run multiple operating systems simultaneously on a single machine. Their tasks include creating virtual environments, ensuring system performance optimization, troubleshooting virtualization issues, and updating existing systems. They also work on integrating virtual machines with hardware and software systems, ensuring security and efficiency. Their role often requires strong programming skills, understanding of Linux systems, and knowledge of computer architectures.