Network Administrator Cloud Infrastructure
Resume:
RAFAEL VIERA
PROFESSIONAL EXPERIENCE
Sunny Glen Children’s Home May 2025 – Present
Network Administrator (May 2025 – Present)
Oversee daily administration of all network/server environments
troubleshooting of the network, hardware, and underlying communication.
Manage and maintain network and server environments, ensuring stability, security, and optimal performance.
Assisting in planning and deployment of new technology initiatives.
Install, configure, and relocate infrastructure hardware.
Engaging with partners for support and warranty compliance.
Support Office 365, Google Workspace email/collaboration platforms.
Troubleshoot issues, monitoring traffic, enforce security protocols, supporting network devices.
Provide training and offer IT assistance onsite and remotely.
Oversee daily operations
Track inventory, maintain documentation, and coordinate with vendors and personnel.
Southwest Key Programs July 2024 – April 2025
DTO Cloud Infrastructure Engineer II (July 2024 – April 2025)
Oversaw system environments, troubleshoot reliability issues, and enhancement tools/processes.
Knowledge in Microsoft 365 & Teams, SharePoint, Azure, Entra, Intune.
On Teams: I ensured Teams policies align with business needs, Reviewed compliance and security policies.
On SharePoint: I audited site permissions and user roles monitored storage and clean up unused files.
On Azure: I reviewed security alerts and remediate vulnerabilities, Applied patches and updates to virtual machines
On Entra: I applied multi-factor authentication (MFA) policies, Analyzed sign-ins for unusual activity.
On Intune: I ensured all devices comply with security policies, validated and monitored device enrollment and Apps.
Provided insights into new technologies and implementation strategies.
Worked closely with IT administrators to manage, and troubleshoot systems, providing support for both on-premises and cloud infrastructure.
Assisted in planning and deploying new tech projects and backup platforms. Support on-prem and private/public cloud infrastructure.
Performing network configuration changes such as setting up VPN tunnels, adjusting VLANs, updating ACL lists, and optimizing routing protocols.
Install, configure, and relocate infrastructure hardware.
Created Visio diagrams to illustrate and document network architecture.
Assisting in planning and deployment of new technology initiatives.
Engaging with partners for support and warranty compliance. Support Office 365 and other email/collaboration platforms.
Documenting problems, service, and resolution data into ticket tracking system in a timely, thorough and accurate manner.
Assisting in the creation, updating, and improving troubleshooting documents and knowledge base articles.
Engage with external partners to resolve support and warranty issues.
monitoring infrastructure and ensuring system availability.
SOUTH TEXAS INDEPENDENT SCHOOL DISTRICT January 1999 – June 2024
Network Systems Admin / Network Support Specialist (July 2010 – June2024)
Technology Support Specialist (January 1999 - July 2010)
Over 26 years of technical and network expertise in aggregated implementation, management and supported computing systems and network responsibilities.
13+ years of direct experience and responsibilities in planning, installing, implementing and configuring Local Area Networks and network infrastructure; Window servers, security appliances and network equipment and acting as a Systems/Network Administrator.
Wide experience with Mac and Microsoft products such as Mac IOS, Windows servers, Exchange Server 2019, AD/DNS/DHCP, Azure, O365, Google Workspace. Firewall, LAN/WAN networks, Aruba WIFI and Cybersecurity for our School district.
Reviewed service health dashboards for ongoing issues,
Applied security updates and patches regularly
Audited user access and permissions
Backup critical data and validate recovery processes
Monitored storage usage and optimized resource location
Acting as Systems/Network Administrator responsible for the day-to-day operation of the school district network infrastructure that includes but no limited to analyzing, troubleshooting, evaluating computer network problems, installing, and supporting the organization’s computer systems, including local area networks (LANs), wide area networks (WANs), network segments, intranets, WIFI, data communication systems, Voice communication systems.
Routine maintenance of the school district networks, such as performing files, email, server and VMs backups and upgrades on the network
Experienced using administrative tools to troubleshoot network problems.
Able to configure Windows Server, AD / DNS / DHCP.
Domain Forests, manage users and groups, Group Policies and assigning rights/permissions.
Minimized network hops or congestion that delayed SIP message delivery
Implementation of Web Content filtering system, Cisco Call Manager, and troubleshooting of school District services.
Experience with configuring, maintaining and troubleshooting routers and switches, and performing troubleshooting tasks for connectivity, speed, and packet loss issues not to mention IPS/IDS security and traffic shaping and Cybersecurity.
Advanced Router/Switch knowledge such as Configuring, Installing, managing and troubleshooting Network equipment.
VLANS, Access Control Lists, subnets, etc.
Experience in troubleshooting computer and network issues such as group policies, user accounts, VLAN and subnets.
Excellent organizational skills and ability to prioritize workload and pay close attention to detail and precision to solid work ethics.
BROWNSVILLE INDEPENDENT SCHOOL DISTRICT March 1998 - January 1999
Customer Support Specialist
EDUCATION AND CERTIFICATIONS
WESTERN GOVERNORS’ UNIVERSITY
Bachelor of Science in Information Technology, February 2010
SOUTH TEXAS COLLEGE, McAllen TX
Associate in Computer Science, May 2005
Associate in Computer Information Systems, April 2004
TEXAS STATE COLLEGE, Harlingen TX
Associate in Computer Maintenance, June 1998
Certifications:
CompTIA A+
CompTIA Network +
CompTIA Security+
Project + Certifications
Cisco Certified Specialist and Cisco CCNA, 2012 - 2026
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