Errol Lopez

Computer Engineering graduate specializing in System and Network Administration with hands-on experience in IT infrastructure, cybersecurity, Windows Server administration, Linux environments, and enterprise network monitoring. Experienced in Active Directory, Group Policy, Microsoft 365, FortiGate firewalls, Zabbix, Wazuh, Hyper-V, and vulnerability assessments using Kali Linux in supervised enterprise and laboratory environments.

Microsoft Azure

Fundamentals (AZ-900) certified with a strong interest in cybersecurity operations, security monitoring, Linux administration, cloud technologies, and security automation.

Helpdesk Level 1 (TechOps Dept) - Cyzerg Philippines Technology Inc. - Clark, Pampanga

(2025-07 - 2025-10)

• Resolved end-user hardware, software, Microsoft 365, Windows, and network-related issues in a fast-paced MSP environment through remote and onsite support.
• Administered Microsoft 365, including user onboarding and offboarding, mailbox and user account management, licensing, distribution groups, mail flow rules, and email archiving.
• Provisioned and deprovisioned user accounts, ensuring appropriate access permissions and timely account lifecycle management.
• Delivered remote support using NinjaOne and GoToAssist while managing incidents, service requests, and documentation through Zoho Desk.
• Performed workstation deployment, maintenance, hardware upgrades, operating system installation, and software configuration to ensure reliable endpoint performance.
• Assisted in endpoint security monitoring, malware remediation, and system performance troubleshooting using enterprise security solutions.
• Monitored and responded to endpoint security alerts using SentinelOne, assisting with malware detection, threat remediation, endpoint isolation, and security incident escalation when necessary.
• Assisted with IT asset inventory, device auditing, and documentation to maintain accurate hardware and software records.

NOC Role - Cyzerg Philippines Technology Inc. - Clark, Pampanga

(2025-07 - 2025-10)

• Monitored and maintained availability of 30+ production servers, ensuring timely escalation of critical incidents.
• Verified backup integrity using Microsoft Azure Backup and Veeam, ensuring successful completion and escalating failed backup jobs.
• Escalated backup or server issues to relevant teams/clients
• Generated comprehensive reports on system performance and failure incidents, decreasing incident response time by 20% through proactive alerting and detailed documentation.

Cadet Engineer, IT Dept - San Roque Power Corporation (SRPC) - San Manuel, Pangasinan

(2024-10 - 2025-04)

• Assisted in administering Windows Server 2019 infrastructure, including Active Directory, DNS, Group Policy, Hyper-V, and domain services.
• Performed authorized vulnerability assessments and wireless security testing using Kali Linux in supervised laboratory and enterprise environments.
• Configured and optimized Zabbix monitoring solutions, including dashboards, alerts, network maps, and access point monitoring.
• Assisted in configuring FortiGate firewalls, SNMP, and enterprise network infrastructure while supporting network monitoring and connectivity projects.
• Supported endpoint security initiatives by assisting with Wazuh agent deployment, workstation security updates, and vulnerability remediation.
• Provided technical support for Windows workstations, printers, servers, Remote Desktop, and enterprise network connectivity across multiple departments.
• Created technical documentation, troubleshooting procedures, and a comprehensive internal Zabbix deployment and administration manual.

Bachelor of Science - Computer Engineering, Major in System and Network Administration - Pangasinan State University Urdaneta City Campus