Thomas Andrejak
IT Specialist at US Army
Chambersburg, Pennsylvania, United States
Summary
👤
Senior🎓
Top SchoolThomas Andrejak is an IT specialist and former Marine with 14 years of hands-on experience administering classified TS/SCI networks, supporting 400+ users, and managing both physical and virtual server environments. He brings a problem-solving mindset focused on permanent fixes and operational resilience, honed supervising a Network Operations Center and running 24-hour help desks for garrison and deployed units. Proficient in TCP/IP, Cisco switching/routing, Windows Server administration, Hyper-V, and cabling/fiber infrastructure, he pairs technical depth with a strong customer-service orientation. As a security-minded contributor to the Suricata open-source IDS project, he added IPv6, protocol decoding improvements, and richer alert data—demonstrating applied network-security engineering beyond military roles. Currently transitioning from the Marine Corps and based in Chambersburg, PA, he holds a BA in History from Penn State and is seeking civilian IT roles nationwide that leverage his operational security and systems administration background.
14 years of coding experience
3 years of employment as a software developer
Bachelor of Arts - BA, HISTORY, Bachelor of Arts - BA, HISTORY at Penn State UniversityHigh School Diploma, High School Diploma at Central York High School
English
Github Skills (11)
c1710
cybersecurity10
system10
c1110
sys10
intrusion-detection10
suricata10
system-security10
security10
network-monitoring9
json8
Programming languages (9)
Github contributions (5)
OISF/suricata
May 2016 - Jun 2017
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine developed by the OISF and the Suricata community.
Role in this project:
Security Engineer
Security EngineerContributions:5 reviews, 7 commits, 15 PRs in 1 year
Contributions summary:Thomas focused on enhancing the Suricata network intrusion detection system's functionality by adding and modifying code related to protocol decoding and alert generation. Their contributions included adding macros for accessing TCP, UDP, ICMPv4, and ICMPv6 header data, allowing for more granular inspection. Furthermore, the user added IPv6 support and included protocol information through JSON, improving the system's ability to analyze and report on network traffic. They also added additional data to the alerts to help with better analysis.
git-repositorynsmipssecurityids
SECEF/libidmefv2
Nov 2016 - Mar 2021
Contributions:1 push, 1 branch in 4 years 5 months
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