Veteran IT Systems & Network Administrator

Victor Varela

619-***-**** *****@**.** Tucson, AZ 85705

PROFILE

U.S. Army Veteran and I.T. professional with over 15 years of experience in System Administration in Red Hat and Apache web servers, VMware, Nagios/Zabbix monitoring, Amanda backup, Windows Server, Active Directory, IIS, F5 BIG-IP LTMs, NetScaler, IBM, Dell and HP blade server management using iLO, iDRAC, CMC, Cisco routers/switches, Palo Alto, SonicWall firewalls, Riverbed and PacketShaper WANOs, OSPF troubleshooting, fiber optic and Ethernet cabling troubleshooting, KIV-7M and TACLANE-Micro KG-175D encryptors

EXPERIENCE

Network Administrator, World View Enterprises Jul. 2025 – Present

Tucson, AZ

Deployed RADIUS authentication on Dell N3048P/N3024P switches and Palo Alto PA-850 firewalls to centralize access control, enhance administrative security, and streamline user management across network infrastructure

Renewed SSL certificates and administered DNS records

Implemented SAML-based MFA on a Palo Alto PA-850 firewall, successfully securing GlobalProtect VPN access using cloud-based authenticator apps.

Provisioned Cisco UCS S3260 and UCS C3K M4SRB chassis with 168 TB storage across 14 12 TB drives, enabling GUI access, configuring RAID 5 for fault-tolerant shared storage, and integrating via SFP+ uplink to Dell N3048P switch for high-speed network connectivity

Optimized guest Wi-Fi using Ubiquiti UniFi Cloud Key Gen2 to configure MAC filtering, captive portals, and QoS, preventing bandwidth abuse and ensuring availability for business-critical traffic

Systems Administrator, Raytheon Mar. 2023 – Apr. 2025

Tucson, AZ

Assisted with upgrading server infrastructure in a SAP (Special Access Program) environment

Maintenance, STIGs of virtualized Windows Server 2019, 2022, RHEL 7 servers

Management of ESXi, vCenter and VMs, HP iLo remote management

Administration of NetApp appliance, shares, permissions, LDAP authentication

Management of SEP Manager, Splunk Indexer/forwarders, Ivanti server

Administration of software FlexLM license server and different license models

Systems Administrator, RCC – CONUS (Leidos) Jul. 2022 – Mar. 2023

Ft. Huachuca, AZ

Mitigated findings identified by ACAS/Tenable scanners of RHEL 6/7/8 servers

Completed OS STIG checklist requirements on RHEL 6/7/8 servers

Updated Red Hat Satellite server for patching, completed snapshots on vCenter prior patching

User account creation, management of the OS for RHEL servers

Network Engineer, VSolvit Mar. 2022 – Apr. 2022

Camp Pendleton, CA

Worked and prepared Juniper SRX340 routers and EX2300 for network upgrade

Worked with IT support team with inventory of existing hardware

TACNET Network Engineer, SAIC Dec. 2019 – Mar. 2022

San Diego, CA

Worked with DoD personnel to provide technical support to NAVWAR PMW160 (ADNS) fielded Tactical Networks in a fast and high energy environment

Perform system installations, configuration management enforcement, system sustainment and upgrades, distance support, and emergent Casualty Report (CASREP) support as needed in support of Naval Warfighters

Troubleshoot OSPF neighbor adjacencies, QoS, multicast routing, latency and ACL issues

Configuration/troubleshooting of TACLANE KG-175D and KIV-7M dynamic SAs with shore

Troubleshoot Layer 1 issues with RF, fiber, serial and Ethernet

Troubleshoot Red Hat Linux issues with backups, user accounts, OS health and RADIUS issues

Understanding of SATCOM components like modems, patch panels, serial interfaces and RF frequencies

Information Technology Specialist (25B), U.S. Army Jul. 2018 – Oct. 2019

Kuwait, Jordan

Management of Cisco ISR 4451 router/switch, configuration and troubleshooting of tunnels and VLANs

Troubleshooting of signal flow across different networks, TCP/IP routing problems,

Configure VoIP phones, manage Cisco Unified Call Manager,

Configured/troubleshot Satellite signal acquisition, data path transmission and related irregularities

Proficient with SNAP terminal, configured/troubleshot TACLANE-Micro KG-175D encryptor

Systems Administrator, GDIT/Spawar May. 2018 – Jul. 2018

San Diego, CA

Mitigated ACAS Findings identified by HBSS scanning of RHEL 6/7 servers

Deployed DISA STIG OS checklist requirements on RHEL 6/7 servers supporting various applications

Databases: MySQL and Postgres, installed packages and configuration

Configuration of RHEL system admin tools: Monit, LogWatcher and AIDE

Deploy new RHEL servers from baseline server, configured to join Satellite server, install updates with YUM

Systems Administrator, Blackhawk Network Mar. 2015 – Dec. 2017

San Diego, CA

Deploy new HP Proliant DL320e servers with CentOS 6/7 using Cobbler,

Nagios/NRPE and HP iLO configuration, backup/restores with Amanda

Configured small development environment in AWS, configured Apache virtual hosts, renewal of SSL certificates

Automation of tasks with Ansible, maintained server configuration with GIT, management of Bitbucket repos

Created SFTP accounts, managed DNS records, Windows 2012 R2 WSUS

NOC Analyst, QuickPlay Media Sep. 2013 – Mar. 2015

San Diego, CA

Proactively check health of applications and 24/7 Linux based infrastructure with Zabbix monitoring software

SSH to Apache web servers to run scripts, stop/restart services, kill hung processes, tail and analyze log files, edit configuration, change permissions and ACLs

Compressing log files with gzip, configuring system clock with NTP, unlocking user accounts.

Use of F5 BIG-IP LTMs and Oracle WebLogic to remove server pools from production in order to complete routine process

Initiate/administer conference calls, work with engineering teams to reduce outages, document details in ticketing system

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