Network & Systems Administrator Resume Summary Title

JASON JOSHUA PASTORA

NETWORK ADMINISTRATOR SYSTEMS ADMINISTRATOR CLOUD & INFRASTRUCTURE SUPPORT

Houston, TX Phone: [Add Phone] Email: [Add Email] LinkedIn: [Add Link] PROFESSIONAL SUMMARY

Network and systems administrator with enterprise experience supporting multi-site network infrastructure, Microsoft 365, Azure/Entra ID, SharePoint, cloud resources, and Tier II/III escalation environments. Skilled in Cisco Meraki migrations, LAN/WAN and SD-WAN support, identity and access administration, virtualization, backup/recovery, security controls, and change documentation. Proven team lead with experience coordinating infrastructure deployments, reducing disruption during cutovers, and supporting business-critical operations. CORE COMPETENCIES

Network Infrastructure & Migration Cisco Meraki Administration Microsoft 365 & SharePoint Azure & Entra ID Active Directory & Group Policy LAN/WAN, SD-WAN, VLANs & VPNs Tier II/III Escalation Support Virtualization & Backup/Recovery Security & Compliance Support Technical Documentation & Change Control Team Leadership PROFESSIONAL EXPERIENCE

Network Administrator June 2025 - Present

Mahindra Houston, TX

• Support LAN/WAN and SD-WAN infrastructure across hybrid on-premises and cloud-connected environments, including Azure and AWS networking components.

• Lead phased migrations from legacy infrastructure to Cisco Meraki MX security appliances, MS switches, and managed wireless platforms with minimal operational downtime.

• Configure VLAN segmentation, ports, traffic shaping, group policies, site-to-site VPNs, wireless networks, firewalls, routers, and switches across enterprise locations.

• Administer Active Directory, Group Policy, Office 365, and Entra ID integrations supporting secure authentication and access management.

• Provide Tier II/III escalation support in Microsoft-centric environments spanning Windows Server 2019 and Windows 10/11 endpoints.

• Perform firmware patching, system configuration changes, audits, backup planning, and change-control documentation supporting security and business continuity.

• Coordinate with corporate IT and cross-functional teams to deliver infrastructure projects, troubleshoot complex issues, and support end-user adoption after cutovers. Systems Administrator - Microsoft 365, Azure & SharePoint July 2023 - January 2025 Sempra Energy Houston, TX

• Administered Microsoft 365 services including Exchange Online, SharePoint Online, Teams, and OneDrive-related user support and governance activities.

• Managed Azure Active Directory/Entra ID access, licensing, permissions, and identity controls while partnering with InfoSec on hardening and compliance needs.

• Maintained Azure virtual machines, backups, resource groups, and administrative processes; automated repeatable tasks using PowerShell.

• Supported SharePoint site administration, data lifecycle activities, permissions, migrations, and feature rollouts across business teams.

• Delivered Tier II/III escalation support and maintained clear system documentation for updates, access audits, and operational changes.

PROFESSIONAL EXPERIENCE CONTINUED

Tier II IT Support Technician - Managed Services March 2022 - May 2023 Braintek MSP Houston, TX

• Resolved escalated technical incidents for managed-service clients through remote support and on-site visits across Texas.

• Supported Windows Server environments, domains, Microsoft 365, Active Directory, DNS, DHCP, Exchange, VPN connectivity, and network troubleshooting.

• Implemented and maintained backup solutions using Acronis and Veeam and supported VMware, Hyper-V, VDI, firewall, mapped-drive, and Group Policy issues.

• Performed infrastructure audits and upgrades, documented work in ConnectWise, and developed SOPs to improve service consistency.

• Participated in Level 2/3 on-call rotations while maintaining accurate client communications and issue-resolution documentation.

Field Technology Manager - Infrastructure & Network Deployment October 2016 - January 2022 AutoNation Houston, TX

• Supervised four field technicians delivering network deployments and technical support across offices and operating facilities.

• Deployed and configured Cisco Meraki, Cisco ASA, FortiGate, SD-WAN, VPN, and routing solutions in accordance with infrastructure standards.

• Implemented resilient communication paths, maintained network/security configurations, and supported Active Directory and Kerberos authentication integration.

• Managed patching, firmware updates, security policy implementation, as-built documentation, and post-deployment validation activities.

• Supported cybersecurity investigations through log review and access reporting while coordinating vendors and internal stakeholders on resolution efforts.

TECHNICAL SKILLS

Cloud & Collaboration: Microsoft 365, Exchange Online, SharePoint Online, Teams, Azure, Entra ID, AWS Networking & Security: Cisco Meraki, Cisco Switching, Cisco ASA, FortiGate, SonicWall, Aruba, LAN/WAN, SD-WAN, VLANs, VPN, TCP/IP, DHCP, DNS

Systems & Virtualization: Active Directory, Group Policy, Windows Server 2019, Windows 10/11, macOS, Red Hat Linux, CentOS, Ubuntu, VMware, Hyper-V, Citrix

Tools & Operations: PowerShell, ServiceNow, ConnectWise, Jira, Cherwell, SolarWinds, Bomgar, TeamViewer, NinjaRMM, Acronis, Veeam, RingCentral

EDUCATION & CERTIFICATION

LAN Support Technician Certificate Houston Community College, Houston, TX

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