Massimo Maggi
Systems Engineer (SRE) at Google
Zurich, Zurich, Switzerland
Summary
👤
Senior🎓
Top SchoolMassimo Maggi is a Systems Engineer (SRE) based in Zurich with 15 years of hands-on experience building and operating reliable infrastructure at scale, currently focusing on site reliability at Google. He blends deep systems and DevOps expertise with a background in web development and sysadmin work from his earlier role at a commercial art agency. An open-source contributor to the widely used OpenZFS project, he has implemented Posix ACL support, fixed quota and ZVOL issues, and made careful memory-allocation changes to prevent I/O deadlocks—work that demonstrates attention to low-level correctness. Trained in Ingegneria Informatica at Politecnico di Milano, he combines academic rigour with pragmatic engineering. Colleagues describe him as a curious "geek" who enjoys expanding his knowledge across systems, storage, and operational tooling.
15 years of coding experience
5 years of employment as a software developer
Ingegneria Informatica, Ingegneria dell'informazione, Ingegneria Informatica, Ingegneria dell'informazione at Politecnico di Milano
Italian, English
Github Skills (10)
c1710
kernel10
system10
systemd10
filesystem10
openzfs10
c1110
sys10
kernel-mode10
memory-management9
Programming languages (4)
Github contributions (5)
openzfs/zfs
Aug 2012 - Nov 2013
OpenZFS on Linux and FreeBSD
Role in this project:
Back-end Developer
Back-end DeveloperContributions:9 commits, 25 comments, 2 issues in 1 year 2 months
Contributions summary:Massimo's contributions primarily focused on the ZFS storage system, addressing several bug fixes and enhancements. They modified code related to memory allocation, specifically switching from `KM_SLEEP` to `KM_PUSHPAGE` to avoid potential I/O issues during memory operations in various modules. The user also implemented support for Posix ACLs within the ZFS file system and fixed issues related to quota properties. Furthermore, the user addressed a deadlock in the ZVOL module.
freebsdlinuxopenzfssystem-softwarefile-system
rbino/dpacalc
May 2012 - Jan 2013
Contributions:48 commits in 8 months
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