Expert Required for File Systems in Xv6

I am seeking an expert to implement a new feature in Xv6's file system. Specifically, I want to add a new file system to the existing codebase.
Adding lseek support
Adding support for symbolic links
Adding support for large files
Inspecting file system organization w/ mkfs...
Adding extent-based file support.
5a. Implementing Better Locks
5b. Copy-on-write fork
5c. Implementing the Fast File System
5d. File System Checking