Jens Axboe
Software Engineer at Unity Microsystems Inc
Park City, Utah, United States
Summary
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RockstarJens Axboe is a software engineer with 25 years of low-level systems experience and the long-time lead developer and maintainer of Linux’s block I/O subsystem, having twice rewritten the core (beginning with the 2.5 kernel) to support modern multi-queue architectures. He authored io_uring and fio, created btrace and multiple pluggable I/O schedulers, and has implemented storage features across IDE, SATA, SCSI and NVMe — including work on NVMe fabrics and zero-copy operations. His contributions appear in the torvalds/linux tree and directly influence storage performance in large-scale environments. Based in Park City, Utah, he combines deep kernel-level engineering with practical testing and tooling expertise while serving at Meta and advising storage-focused startups.
25 years of coding experience
English, Danish
Stackoverflow
146reputation
2kreached
1answer
0questions
Github Skills (21)
system-programming10
rdma10
iscsi10
io-uring10
file-systems10
file-system10
c1110
linux-kernel10
nvme10
c1710
network-protocols9
memory-management9
optmization9
optimisation9
network-protocol9
Programming languages (8)
Github contributions (5)
torvalds/linux
Jan 2023 - Mar 2023
Linux kernel source tree
Role in this project:
Back-end Developer
Back-end DeveloperContributions:43 commits in 2 months
Contributions summary:Jens primarily contributed to the Linux kernel, specifically focusing on the NVMe and io_uring subsystems. Their work involved fixing bugs and improving functionality related to persistent reservations, zero-copy receive operations, and general code cleanup and refactoring. The user demonstrated proficiency in low-level systems programming. These changes focused on various low-level subsystems such as NVMe fabrics, page cache and I/O queuing.
kernellinux-kernellinuxkernel-source
efarrer/blktrace
Sep 2006 - Feb 2012
Contributions:6 commits in 5 years 6 months
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