Eric Marquez

I’m a Dedicated Cybersecurity Analyst with over 15 years of IT experience, focused on SIEM/SOAR operations, Identity and Access Management (IAM), Unix system administration, and network security. I build high-fidelity detection and reduce friction in operations by turning security signals into reliable, actionable workflows.

In my current role as a Senior Security Analyst, I develop and tune YARA-L detections in Google SecOps (Chronicle), cutting false-positive noise by 30% while identifying emerging threats. I also design SOAR playbooks that automate repetitive SOC tasks and improve incident response and containment times.

I have strong hands-on expertise across tooling and investigations, from forensics and packet analysis to threat and email security. I’ve engineered SpamAssassin filtering logic and built custom scripting tools that improved log analysis efficiency by 20%.

Earlier in my career as a System Administrator / Project Lead, I led mission-critical infrastructure work—delivering 99.9% uptime, improving troubleshooting response time from two weeks to two days, and authoring Disaster Recovery and Business Continuity Plans. I’m energized by DevSecOps collaboration and bridging software development and security to help teams move faster without compromising protection.