Matthew has been a Linux kernel hacker since 1998 when he made a minor modification to the isofs filesystem. Since then, he's worked on many parts of the kernel including the ARM, PA-RISC, Itanium, x86 and powerpc architectures, file locking, the PCI and SCSI subsystems, semaphores, ethtool, interrupt handling, killable tasks, ACPI, USB, SSDs, NVMe and persistent memory.

He currently works for Microsoft on various Linux projects.