Senior Network & Infrastructure Engineer

I design infrastructure that doesn't blink.

20+ years securing, modernizing, and troubleshooting enterprise environments across government and private industry — from core networking and firewalls to Microsoft platforms, ZTNA, VPN, cloud-connected infrastructure, and mission-critical operations.

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Julio Alvarado
Senior Network & Infrastructure Engineer

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Enterprise Networking
Network Security
Infrastructure Modernization
Microsoft + Hybrid Systems
Complex Troubleshooting
20+Years in IT & infrastructure
300+Cisco ASA firewalls supported
SLEDGovernment-sector experience
24/7Mission-critical mindset
20+ yrsEnterprise IT, networking & infrastructure
300+Cisco ASA firewalls supported statewide
SecurityFortinet, Palo Alto, VPN/IPSec, ZTNA
4 CertsNetwork+, CCNA, MCITP & NSE4
Core expertise

Built for complicated environments.

I work where networking, security, infrastructure, and business continuity intersect — designing systems that are resilient, supportable, and secure.

Enterprise Networking

Design, implementation, and troubleshooting across LAN/WAN environments, routing, switching, wireless, TCP/IP, DNS, DHCP, NAT, and VPN technologies.

CiscoExtreme NetworksLAN/WANVPN/IPSec

Network Security

Hands-on administration and security operations across enterprise firewalls and intrusion prevention, including large-scale government environments.

FortinetPalo AltoCisco ASAZTNA

Microsoft Infrastructure

Windows Server, Active Directory, Microsoft 365, Azure MFA, Hyper-V, identity, access, and hybrid infrastructure operations.

Microsoft 365Active DirectoryAzure MFAHyper-V
Professional certifications

Validated across network, security, and systems.

Industry certifications spanning foundational networking, Cisco infrastructure, Microsoft enterprise systems, and Fortinet network security.

CompTIA

Network+

Core networking concepts, infrastructure, operations, security, and troubleshooting.

Cisco

CCNA

Cisco networking, routing, switching, IP connectivity, and network operations.

Microsoft

MCITP

Microsoft Certified IT Professional expertise in enterprise Microsoft technologies.

Fortinet

NSE4

Fortinet Network Security Expert certification in FortiGate security and administration.

Experience

Two decades of solving the hard problems.

Government and private-sector experience spanning engineering, infrastructure operations, security, modernization, consulting, and technical leadership.

Dec 2023 — Present

IT Network Infrastructure Specialist

State of Arkansas — Bureau of Legislative Research

  • Lead planning and coordination of Microsoft 365 deployment initiatives.
  • Coordinate Fortinet ZTNA implementation integrated with Azure Multi-Factor Authentication.
  • Plan deployment of Extreme Networks wireless access points and switching infrastructure.
  • Troubleshoot enterprise network, server, and security infrastructure.
  • Support Windows Server, Active Directory, Microsoft 365, and enterprise networking technologies.
Jan 2020 — Dec 2023

Firewall Specialist

State of Arkansas — Department of Information Systems

  • Supported and maintained more than 300 Cisco ASA firewalls.
  • Administered Palo Alto Intrusion Prevention Systems.
  • Worked with vendors and cybersecurity teams on statewide security initiatives.
  • Trained and mentored new technical staff.
2003 — 2020

Network / Infrastructure / IT Roles

Government & Private Industry

  • Network Administrator, Infrastructure Engineer, IT Administrator, Consultant, and Electronic Technician roles.
  • Designed, implemented, and supported Windows Server, Active Directory, Cisco networking, wireless infrastructure, Exchange, and enterprise LAN/WAN environments.
Selected impact

Experience that translates into outcomes.

The résumé tells the story: broad technical depth, government-scale responsibility, and repeated ownership of infrastructure that organizations depend on.

300+

Firewalls supported

Maintained a statewide Cisco ASA environment while also supporting Palo Alto intrusion-prevention systems and security initiatives.

20+

Years across the stack

Experience spans networks, servers, identity, cloud-connected services, security platforms, wireless, Microsoft infrastructure, and consulting.

ZTNA

Modern access strategy

Coordinating Fortinet ZTNA integrated with Azure MFA — connecting security modernization to real-world enterprise operations.

M365

Infrastructure modernization

Leading planning and coordination for Microsoft 365 deployment initiatives within the Arkansas legislative environment.

Let's connect

Need someone who can own the network, not just watch it?

Open to senior network, infrastructure, security, consulting, and solutions-engineering opportunities where experience, judgment, and technical depth matter.