John H
Senior Systems Administrator
Phoenix, Arizona, United States
Summary
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SeniorJohn H is a Senior Systems Administrator based in Phoenix with 11 years of experience designing and hardening Linux and UNIX infrastructure across air-gapped and enterprise environments. He specializes in RHEL/Debian/Solaris/FreeBSD platforms, NetApp and Nutanix storage, and integrating heterogeneous systems into Windows/Active Directory domains. At General Dynamics Mission Systems he architects secure networks, administers NetApp Data ONTAP clusters, and implements DISA STIG hardening while coordinating cross-team reproductions of solutions. Comfortable with Cisco, Palo Alto, Juniper, Dell and Aruba networking, he brings hands-on expertise in installing and securing servers, switches and firewalls for high-assurance environments. Colleagues rely on him for practical, auditable infrastructure designs that balance strict security requirements with operational maintainability.
11 years of coding experience
Github Skills (200)
end-to-end-encryption10
sentry10
pgp10
windows10
chat10
netcore10
linux10
powershell10
shell10
wayland10
gentoo10
keybase10
raknet10
react-native10
statusbar10
Programming languages (24)
Github contributions (5)
openblox/openblox
Dec 2015 - Nov 2019
Contributions:79 commits, 1 push, 4 branches in 3 years 11 months
JohnMH/gentoo
Jul 2024 - Sep 2025
[MIRROR] Official Gentoo ebuild repository
Contributions:99 pushes, 15 branches in 1 year 1 month
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