Tom Callahan
Vice President - IT at Tessco Technologies
Ilchester, Maryland, United States
Summary
👤
Senior🎓
Top SchoolTom Callahan is an accomplished IT executive and founder with over 20 years of experience driving modernization, cloud enablement, and cybersecurity across wholesale distribution, petroleum/c-store, insurance, and MSSP environments. As Vice President of IT at Tessco and former leader of multiple MDR/XDR teams, he has led large cross-functional organizations, delivered an SAP S/4HANA migration, and achieved sustained cost reductions—including a 45% cloud spend cut and 30% IT budget savings. He combines hands-on technical roots (Linux, storage, infrastructure architecture) with P&L stewardship and a track record of scaling security operations and launching market-leading MDR/XDR services. Known for turning operational complexity into resilient, compliant platforms, he also runs a consulting firm that helps SMBs optimize technology investments.
10 years of coding experience
18 years of employment as a software developer
Bachelor of Science and Business Administration, Information Technology, Bachelor of Science and Business Administration, Information Technology at Towson University
Github Skills (137)
dashboard10
incident-management10
grafana10
elasticsearch10
influxdb10
monitoring10
data-visualization10
mysql10
analytics10
go10
prometheus10
composable10
visualization10
visualize10
aws10
Programming languages (11)
Github contributions (5)
cyphonmdr/geoip
Oct 2019 - Apr 2020
Docker image for GeoLite2 Country and City databases.
Contributions:5 commits, 5 pushes, 1 comment in 5 months
docker-imagegeolite2geolite2-countrygeoipdocker
fatalglitch/elastalert-rabbitmq-alerter
Apr 2018 - Sep 2018
Contributions:1 release, 3 pushes, 1 branch in 5 months
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