A Linux Kernel developer designs, implements, and maintains the Linux kernel, the core component of the Linux operating system. They analyze and resolve issues related to kernel performance, functionality, interoperability, and security. Their work includes writing and modifying kernel code, debugging kernel-level issues, and integrating new features. They also collaborate with other developers on kernel development projects, contribute to open-source communities, and document their work for reference. Their goal is to enhance the efficiency, reliability, and security of the Linux operating system, ensuring it functions seamlessly with various hardware and software.