DEMETRIO BARROZO DELA ROSA JR.
IT Infrastructure Engineer
IT Infrastructure Engineer with 13 years supporting IT infrastructure and managed services across US, APAC, and Australia. Skilled in Windows Server, Microsoft Azure, VMware, networking, and PowerShell automation. Seeking to leverage expertise in infrastructure management and cloud technologies to drive operational excellence.
Gonzales Street, Bonuan Boquig, Dagupan City, Pangasinan, Philippines, 2400
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Projects
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Language
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Skills
Work Experience
IT Infrastructure Engineer
- Provided L2/L3 infrastructure and technical support for international customers across the US and Australia, working within SLA and managed-service environments
- Administered and supported Windows Server, Active Directory, DNS, DHCP, and Group Policy environments
- Managed Microsoft 365 and Azure AD/Entra ID, including user accounts, group memberships, MFA, and access administration
- Administered Microsoft Intune for device compliance, application deployment, and security policies
- Managed RMM monitoring alerts covering CPU, memory, storage, network, and system health, performing proactive troubleshooting and remediation
System Administrator
- Provided infrastructure and technical support for a global APAC and EMEA user base
- Delivered L2 escalation support for complex Windows, Active Directory, VPN, firewall and network issues
- Administered Office 365, including mail flow, licensing, password administration, Teams and SharePoint permissions
- Administered VMware vSphere, including VM provisioning, snapshots and scheduled infrastructure maintenance
- Supported Active Directory, DNS, DHCP and Group Policy environments
- Assisted with firewall rule changes and VPN account configuration.
- Troubleshot branch-office connectivity issues and coordinated ISP escalations.
- Performed packet and latency analysis for network connectivity incidents.
- Supported RDP and secure remote-access environments.
- Managed ServiceNow and ConnectWise ticket queues while maintaining SLA requirements.
- Created SOPs covering remote troubleshooting, VPN configuration and printer deployment.
- Developed basic PowerShell scripts for repetitive user administration tasks.
- Supported network printers, drivers, queues and Windows printing services.
IT Instructor
- Taught PC troubleshooting, hardware and software installation, networking, databases, data processing, and web development
- Provided instruction on computer applications, system administration, and technical problem-solving
- Developed lesson plans, training materials, curriculum activities, and research materials
- Supported students in practical computer and technology activities
Technical Trainer
- Trained students in computer troubleshooting, hardware, networking, Windows, Linux, and Unix
- Taught basic electrical wiring, LED TV repair, monitor troubleshooting, and computer maintenance
- Prepared training materials, lesson plans, goals, and practical technical activities
- Provided hands-on technical instruction and troubleshooting guidance
IT Engineer
- Performed IT infrastructure troubleshooting, hardware and software installation, and system maintenance
- Supported wireless infrastructure, network administration, server management, and database systems
- Supported MS SQL Server, RDBMS, IT security, antivirus, and firewall management
- Worked with business applications including Tally ERP and SAP
- Supported software programming and application technologies including Visual Basic and Visual FoxPro
- Provided technical assistance and user support for hardware, software, and infrastructure issues.
- Trained users on newly installed hardware, software, and technology systems.
Projects
Microsoft 365 / Exchange Migration
Firewall & VPN Standardization
PowerShell Infrastructure Automation
Hyper-V Infrastructure Consolidation
RMM & Proactive Infrastructure Monitoring
Skills
Windows ServerActive DirectoryMicrosoft AzureMicrosoft 365PowerShellVMware ESXiHyper-VNetworkingFirewall ConfigurationRMM MonitoringBackup and Disaster RecoveryIncident ManagementDNSDHCPGroup PolicyEntra IDIntuneVMwareFirewallsVPNsPatch managementBackup/DRPowerShell automationExchange OnlineExchange HybridSLA SupportNinjaOneConnectWiseDattoN-able
Education
Bachelor of Science, Computer Engineering
University of Pangasinan
Certifications
Microsoft Certified Azure Administrator Associate
Microsoft
Red Hat Certified Engineer (RHCE) - Red Hat Linux Enterprise 7
Red Hat
Cisco Certified Network Associate (CCNA)
Cisco
ITIL v4 – Information Technology Infrastructure Library
Axelos
Microsoft Certified: Azure Administrator Associate
Red Hat Certified Engineer (RHCE) – RHEL 7
ITIL v4 Foundation
VMware vSphere Administration Workshop
PowerShell Advanced Scripting for Automation
References
Languages
English
Fluent
PROFESSIONAL STRENGTH
Networking & Firewall Troubleshooting
L2/L3 Infrastructure Support
Virtualization
Managed Services / MSP Operations
Backup & Disaster Recovery
Customer-Focused Technical Support
PowerShell Automation
Root Cause Analysis
Technical Documentation
Proactive Monitoring & Remediation
SLA and Incident Management
Windows & Microsoft Infrastructure
Azure & Hybrid Cloud
Cross-Regional Customer Support
Microsoft 365 Administration
Independent Problem Solving
CHARACTER REFERENCES
Nita Montefalco
Gerwin Castro