Open to opportunities

Geoff Arbo

@geoffarbo

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Dedicated cybersecurity professional focused on Blue Team operations.

United States

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What I'm looking for

I am looking for a role focused on Blue Team activities—SIEM, vulnerability management, incident response, and monitoring—within a collaborative team that values communication and continuous security improvement.

I am a dedicated cybersecurity professional with over 12 years in IT and six years focused solely on Blue Team security activities, including vulnerability management, SIEM operations, incident response, and security monitoring. I have managed customer security environments, coordinated with vendors, and assisted with forensic investigations during active incidents.

I hold a Bachelor of Science in Information Systems Security and an Associate's in Computer Programming, and I am certified on multiple security platforms such as Sophos, Barracuda, Gurucul, and Zscaler. I communicate effectively across disciplines and seek roles where I can concentrate on monitoring, incident response, and improving security posture for clients.

Experience

Work history, roles, and key accomplishments

Security Operations Specialist

Blue Mantis

Aug 2015 - Dec 2025 (10 years 4 months)

Managed customer security environments using SIEM, vulnerability management, Azure/Entra and Microsoft Defender; assisted in incident response and forensic investigations. Maintained vendor relationships for security products and supported security monitoring services.

SIEM Vulnerability Management Azure Microsoft Defender Incident Response Forensics Vendor Management Security Monitoring

Desktop Support Technician I

Measured Progress

Apr 2013 - Jun 2015 (2 years 2 months)

Monitored and troubleshot computer hardware, printers and software including Microsoft Office and Adobe Acrobat to maintain end-user systems and reduce downtime. Performed routine hardware maintenance and support for organizational users.

Microsoft Office Adobe Acrobat Customer Support Ticketing