Network Administrator

T and T Consulting Services, Inc.

Network Administrator managing enterprise network devices and VoIP solutions for METC. Ensuring network availability and security across military medical training campus operations.

Posted 5/21/2026full-timeSan Antonio • Texas • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

DNSUnityVoIPVue.js

About the role

Key responsibilities & impact

Apply established technical standards and security policies for LAN topologies and network components
Identify, analyze, and remediate network security vulnerabilities
Install, configure, troubleshoot, and maintain enterprise network devices including Layer 2 and Layer 3 switches and routers
Implement, troubleshoot, and support Voice over IP (VoIP) solutions
Manage and administer Cisco Call Manager and Cisco Unity systems
Install, relocate, troubleshoot, and remove VoIP telephones for customers as required
Provide local common-user LAN and Campus Area Network (CAN) support, including troubleshooting and repair
Install, configure, support, and troubleshoot Virtual Private Network (VPN) solutions for remote connectivity
Support VPN appliances and wireless networking technologies
Monitor LAN and CAN environments using enterprise network management tools to assess performance, analyze network activity, and ensure high network availability
Perform network discovery, diagnostics, and fault analysis to identify and resolve network issues
Generate and provide network utilization and performance reports
Manage network hardware and software including configuration management and capacity management
Develop, draft, and maintain Standard Operating Procedures (SOPs) related to network operations and support
Maintain flexibility in scheduling to support after-hours or weekend work for special projects when required, while ensuring total work hours do not exceed 40 hours per week.

Requirements

What you’ll need

Bachelor’s degree in computer science, Information Technology, or a related field
6+ years of experience in network administration, with significant experience in a government or complex enterprise environment
DoD 8570/8140 IAT Level II baseline certification with current Continuing Education (CE) certification - Or - Cisco Certified Network Associate (CCNA) or Cisco Certified Network Professional (CCNP)
Demonstrated experience with enterprise network management and monitoring tools including: CiscoWorks, NetView, and SolarWinds Orion (NPM, NetFlow, and virtualization modules) in a heterogeneous network environment
Experience with wireless networking technologies including IEEE 802.11b/g/n standards
Knowledge of wireless authentication protocols including EAP, PEAP, EAP-TLS, and EAP-TTLS
Strong understanding of cabling standards, core networking protocols and services including TCP, UDP, IP, STP, CDP, HSRP, DNS, DHCP, VTP, VPN, FTP, TFTP, IAS, VoIP, NAT, and IEEE 802.1X
Experience configuring, administering, and troubleshooting network hardware including Cisco ASA 5500 Series Adaptive Security Appliances; Cisco 3000/4000/5000/6000 series devices; Brocade/Ruckus multilayer switches and routers; and Cisco Unified IP Phones
Experience providing technical troubleshooting and touch support for enterprise or commercial network environments, including support for Pearson VUE testing center network infrastructure
Demonstrated ability to communicate complex networking concepts to both technical and non-technical personnel
Experience developing technical documentation, system design documentation, and operational procedures
Ability to maintain a professional demeanor and represent the organization positively in customer-facing environments
Ability to work a flexible schedule when operational requirements necessitate.

Benefits

Comp & perks

Competitive benefits package including health, dental, vision, life insurance coverage
401(k) Plan
Training Programs
Accrued Paid Time Off (PTO)
Paid Holidays

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

network administrationnetwork securityVoIP solutionsVPN solutionsnetwork troubleshootingnetwork performance monitoringnetwork diagnosticscabling standardsnetwork protocolstechnical documentation

Soft Skills

communicationflexibilitycustomer serviceproblem-solvingtechnical support

Certifications

Bachelor's degree in computer scienceIAT Level II certificationCisco Certified Network Associate (CCNA)Cisco Certified Network Professional (CCNP)