Sean Mccall
Application Administrator, Sr.
Charlotte, North Carolina, United States
Summary
👤
Senior🎓
Top SchoolSean Mccall is a pragmatic systems and application administrator with 9 years of hands-on experience modernizing infrastructure for airports, nonprofits, and enterprises. Currently the senior application administrator for Charlotte Douglas International Airport, he’s the primary technical resource for baggage handling and supports complex server, OS, and third‑party application ecosystems. Sean has a strong track record migrating identities and mail systems to Azure AD/Office 365, consolidating tenants, and implementing secure access (PIM, SAML, conditional access) while cutting costs through cloud and networking optimizations. He pairs deep operational knowledge—SD‑WAN/SASE, AD restructuring, VPN and replication fixes—with a curiosity-driven, problem-solving approach that digs into root causes rather than band-aid fixes. Colleagues rely on him for practical improvements that reduce spend and increase reliability, such as network redesigns and automation of provisioning workflows.
9 years of coding experience
9 years of employment as a software developer
Technical Certificate Computer Systems Technology 1 & 2, Technical Certificate Computer Systems Technology 1 & 2 at Orange Technical College Winter Park & Avalon
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (12)
source-engine10
fortress10
counter10
sourcemod9
source-sdk9
current-time6
gamma5
sunset5
brightness4
anticheat1
android1
kotlin1
Programming languages (5)
Github contributions (5)
Xeogin/Xperimental-HL2DM-Server
Dec 2016 - Jan 2023
Contributions:96 commits, 107 pushes, 1 branch in 6 years 2 months
Xeogin/Zero-Effort-HL2DM-Config
Apr 2023 - May 2026
A drop-in settings optimization for Half-Life 2: Deathmatch
Contributions:8 releases, 2 PRs, 72 pushes in 3 years 1 month
hl2dmhl2mp
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