Jean Carlos Balderas Martinez

Led and participated in incident response investigations, including malware infections, phishing attempts, and unauthorized access incidents covering over 8,000 endpoints protected by the antimalware solution of the enterprise.

Developed and fine-tuned custom detection rules for security tools ( EDR), increasing detection accuracy and reducing false positives.

Coordinated with internal teams to contain and remediate threats, documenting findings in structured post-incident reports.

Managed and maintained enterprise perimetral devices, including Palo Alto firewalls and Blue Coat Secure Gateways. performing traffic analysis and rule optimization, creating site-to-site and remote access VPNs, designed and implemented firewall policies, NAT policies, inter-zone segmentation, and custom threat signatures.

Monitored and maintained the availability, integrity, and performance of network infrastructure on-premises environments, supporting core services and critical systems. Troubleshot and resolving complex issues related to routers, switches, and ISP connections, ensuring minimal downtime and rapid response to connectivity or security events.

Managed first-line response to network security events, performing initial analysis and escalation as required.

Participated in vulnerability assessments and patch management processes for on-premises infrastructure.

Provided internal support for endpoint hardening and secure configuration baselines.