Angelo Ariñavo

IT professional with hands-on experience across Windows and Linux system administration, network infrastructure, and enterprise service deployment. Skilled in managing Active Directory domains, configuring pfSense firewalls and VPNs for multi-subnet environments, administering virtualization platforms, and automating routine operations with PowerShell and Bash. Proven track record deploying and securing self-hosted enterprise services (Zimbra, Forgejo, FreePBX), rolling out endpoint security platforms, and leading infrastructure automation projects.

Core Strengths: Willing to Learn, Accountable, Trustworthy, Resourceful

Technical Support Associate at CloudManila PH (2024-07 – 2026-09)

• Administered a multi-workstation Windows domain, managing Active Directory accounts, security groups, distribution lists, and domain migrations across departments.
• Configured pfSense firewalls and VPNs for cross-subnet routing and secure remote access; implemented and tested a high-availability firewall failover/sync configuration.
• Researched and rolled out a company-wide Wake-on-LAN automation system that combined PowerShell, pfSense cron jobs, and Windows Task Scheduler; optimized target machines by removing unnecessary background applications to improve wake reliability.
• Deployed and secured a Zimbra mail server; troubleshot DKIM, SPF, and DMARC configurations and reverse DNS (rDNS) alignment across multiple company mail domains; performed daily mail server status, domain blacklist, and spam-filtering checks.
• Managed SSL/TLS certificate renewals for mail and internal web services to maintain secure, uninterrupted access.
• Rolled out a cloud-based endpoint security platform, configuring the management portal, user groups, and security profiles; conducted daily endpoint health checks to identify machines needing updates or remediation.
• Deployed a self-hosted Forgejo Git service on Ubuntu/VMware with LDAP-based authentication.
• Managed a Vicidial-based telephony environment, running daily dialer tests, generating and reviewing daily call reports, and retrieving voicemails and call recordings; monitored outbound provider load balancing and rerouted traffic to alternative SIP/VOIP providers during outages or service issues, and coordinated vendor invoicing.
• Deployed a Group Policy based lock screen policy company-wide and authored the internal deployment documentation.
• Performed disk imaging and backup of failing workstation drives to protect data on at-risk machines.
• Managed LTO tape backup operations for on-premise servers using Symantec backup software, including data retrieval and restoration from tape archives.
• Managed AWS EC2 AMI backups for cloud instances; evaluated AWS EC2 upgrade/downgrade options and provisioned a new EC2 instance.
• Monitored Azure servers for pending Windows updates, coordinating maintenance windows and downtime notifications with the team.
• Installed and configured IIS, SQL Server Express, and SSMS; diagnosed and resolved database issues.
• Performed daily server health checks; monitored network health via firewall gateway and packet-loss logging, and coordinated with the ISP on bandwidth capacity.
• Provided first- and second-line technical support, remote troubleshooting, and onboarding/orientation for new hires and OJTs; authored technical documentation and SOPs for recurring tasks.

IT Specialist at Netvoice Inc. (2023-09 – 2024-07)

• Installed, configured, and maintained FreePBX telephony systems, including integration with a GSM gateway for mobile network connectivity.
• Developed a text-to-speech solution for FreePBX to automate voice prompts and call flows.
• Integrated an SMS API and administered an SMS gateway for automated messaging services.
• Administered Vos3000 and A2Billing softswitch platforms for voice traffic routing and management.
• Managed Google Workspace email administration for the organization.
• Provided printer troubleshooting and general hardware support.

IT Intern at Netsolar Inc. (2023-04 – 2023-07)

• Provided IT troubleshooting support for hardware and software issues.
• Assisted with web design and development tasks.

Bachelor of Science in Information Technology – Eulogio Amang Rodriguez Institute of Science and Technology (EARIST) (2023-08)

TVL - Computer Programming in Computer Programming – Antipolo City Senior High School (2019-04)