Top Network Administrator Jobs

Administer, troubleshoot, monitor, and optimize enterprise data networks across multiple locations, including SD-WAN, WAN, LAN, VPN, VXLAN, Wi-Fi, and cloud networking. Design remote-site network deployments, manage infrastructure upgrades, support network security practices, document standards, and coordinate telecommunications vendors. Provide secondary Windows infrastructure support involving Active Directory, DNS, DHCP, and Group Policy. Train team members and recommend network improvements.

Provides on-site network and systems administration for a U.S. Army facility. Manages Cisco networking, firewalls, VPNs, wireless infrastructure, VMware environments, Windows servers, endpoints, VoIP, and Army A365 accounts. Performs patching, troubleshooting, hardware support, and system administration while ensuring STIG, SRG, and RMF compliance. Maintains documentation, develops compliance reports, supports outages, and coordinates technical assistance cases. Requires an active DoD Secret clearance and on-site availability.

Administer LAN/WAN networks across classified and unclassified environments, manage VMware servers, support secure communications and telecommunications infrastructure, troubleshoot help desk issues, install cabling, and maintain government IT systems. Develop DIACAP and RMF certification documentation, conduct security reviews, identify vulnerabilities, integrate technologies, and improve infrastructure reliability. The role supports mission-critical Air Force training systems onsite at Hill Air Force Base.

Maintains and supports reliable network, wireless, and telephony systems across water, wastewater, and administrative operations. Configures hardware and software, diagnoses connectivity issues, optimizes bandwidth, enforces security standards, supports disaster recovery and lifecycle planning, coordinates installations, monitors vendor SLAs, and assists with hardware inventory. The role also communicates technical information, collaborates across departments, and helps onboard staff to new technologies.

Administers enterprise network infrastructure across multiple locations, including routing, switching, firewalls, wireless, WAN, SD-WAN, VPN, remote access, and hybrid cloud connectivity. Establishes network standards, documentation, maintenance cycles, configuration baselines, and ITIL-aligned processes. Monitors and remediates network issues, manages hardware lifecycles, supports mine-site OT networks, partners with cybersecurity and systems teams, enables service desk resolution, and participates in maintenance windows and occasional site travel.

Designs, deploys, maintains, and troubleshoots network infrastructure across offices, warehouses, and manufacturing sites. Manages VLANs, routing, VPNs, firewalls, monitoring, wireless deployments, documentation, and network equipment. Supports manufacturing OT systems, servers, and factory-floor connectivity while responding to IT and OT incidents. Collaborates on outages, upgrades, security compliance, new-site rollouts, and general IT support in a rapidly scaling startup environment.

Administers, designs, implements, and supports classified LAN/WAN/VPN networks and encryption systems. Leads routing, switching, firewall, network architecture, migration, monitoring, capacity planning, security compliance, incident resolution, and technical support. Develops enterprise standards and roadmaps, coordinates vendors, leads customer engagements, briefs government and internal stakeholders, mentors team members, and supports complex multidomain network and cyber-resilience initiatives. The role is fully on-site, requires classified-environment work, occasional travel, and after-hours support as needed.

Designs, implements, secures, monitors, and maintains global network and telecommunications infrastructure, including WAN, LAN, SD-WAN, firewalls, VPN, wireless, and VoIP systems. Leads network architecture, lifecycle management, troubleshooting, disaster recovery, backup testing, vendor coordination, documentation, and technical support. Provides escalation assistance, mentoring, and guidance to IT teams while supporting multiple company locations and ensuring infrastructure reliability, security, and scalability.

Manage and secure multi-site LAN, WAN, wireless, VPN, SD-WAN, firewall, and cloud networking environments. Configure and troubleshoot network infrastructure, administer DNS, DHCP, IPAM, VLANs, and security controls, monitor performance and threats, respond to incidents, and support vulnerability remediation. Participate in network design, site deployments, vendor coordination, documentation, cabling, and data center support. Serve as an escalation point, mentor junior staff, collaborate across IT teams, and provide on-call incident response.

Administers, configures, operates, and maintains voice, trunked radio, video-conferencing, LAN, VoIP, and classified and unclassified network systems. Installs and troubleshoots switches, routers, firewalls, VPN devices, telephony equipment, and network software. Performs system testing, performance analysis, backups, upgrades, corrective actions, and technical support while ensuring compliance with IT standards and security requirements.

Manage and scale Blue River Technology’s IT infrastructure across network systems, Linux and Windows servers, cloud and on-premises identity platforms, endpoint devices, and SaaS applications. Administer Active Directory, Entra ID, FreeIPA, Okta, Jamf, Intune, and Zscaler products; resolve escalated support issues; write and troubleshoot automation scripts; maintain technical documentation; and contribute to infrastructure, security, reliability, and automation projects.

Administers and supports enterprise network infrastructure, Active Directory, Exchange, IAM, PAM, and related systems. Troubleshoots complex hardware and software issues, performs system maintenance and recovery, supports audits and governance reporting, coordinates technical projects, mentors administrators, monitors assigned work, and participates in on-call support. The role also maintains data center platforms, implements updates and hardening, and uses PowerShell for automation and reporting.

Administer and maintain enterprise network infrastructure across five manufacturing facilities, including firewalls, routers, switches, wireless, VPNs, and SD-WAN. Monitor performance, troubleshoot issues, perform upgrades, backups, disaster recovery, and security hardening across cloud and on-premises environments. Support network design, segmentation, automation, vendor coordination, documentation, service desk escalation, and staff training. Participate in on-call and occasional off-hours support.

Supports enterprise network infrastructure by resolving Tier 1 and Tier 2 incidents, fulfilling service requests, monitoring and troubleshooting networks, managing circuits, and maintaining documentation. Installs and configures Cisco, Meraki, and Versa equipment; supports authentication, routing, expansions, site buildouts, upgrades, and hardware refreshes. Uses ServiceNow and Azure DevOps, collaborates with engineers, participates in on-call support, and travels to sites at least once every six weeks.

Administer and integrate Linux, UNIX, and Windows systems, networks, storage, and virtual environments. Configure infrastructure, troubleshoot complex hardware and software issues, provide Tier 1 and Tier 2 support, optimize capacity and performance, and contribute to systems and mission-architecture design within SOA environments. Communicate technical issues and resolutions to management and internal customers while maintaining reliable mission infrastructure.

Administer LAN/WAN, wireless, VPN, firewall, Windows Server, Active Directory, DNS, and DHCP environments. Provide onsite and remote support for approximately 200 users across office and warehouse locations. Troubleshoot infrastructure, hardware, software, and connectivity issues; manage deployments, upgrades, patching, documentation, asset inventories, vendors, and IT projects. Support cybersecurity initiatives, onboarding and offboarding, workstation setup, and infrastructure expansion.

Administers LAN/WAN, wireless, VPN, firewall, and Windows infrastructure for approximately 200 users. Configures Cisco networking equipment, supports Active Directory and core services, troubleshoots end-user and connectivity issues, manages deployments and maintenance, coordinates vendors, maintains documentation and assets, and contributes to cybersecurity and infrastructure improvement projects.

Administers and supports classified LAN, WAN, server, network, virtualization, and security environments. Leads daily network operations, monitoring, patching, security assessments, SIEM alerting, incident response, vulnerability management, and RMF-related activities. Develops O&M checklists, SOPs, and security processes while supporting Collateral, SCI, and SAP systems. Requires extensive network and systems administration experience, at least two years of SAP experience, and an active TS/SCI clearance with eligibility for a CI polygraph.

The role involves managing LAN networks, configuring Cisco routers, switches, firewalls, and load balancers, ensuring effective network administration.

Manage and configure LAN networks, including Cisco routers and switches, firewalls, and load balancers. Upgrade systems as needed.

Administers, maintains, monitors, and secures enterprise network infrastructure across multiple platforms. Configures Cisco networking technologies, firewalls, VPNs, wireless systems, and monitoring tools; troubleshoots complex network issues; implements security controls; and supports availability, performance, and compliance. Collaborates with network engineering, IT operations, and security teams while documenting environments, developing procedures, and potentially training junior staff and end users.

Lead design, implementation, and management of enterprise network systems. Build and maintain LAN/WAN environments and server operations, provision and troubleshoot WAN circuits, configure Cisco/Juniper devices, and manage routing, switching, firewalls, VPNs, DNS, DHCP, and VLANs. Plan and execute infrastructure projects, document architecture and implementation, coordinate stakeholders and vendors, and provide post-project support and optimization.

Administer, secure, and maintain enterprise network infrastructure for global LVC environments. Lead network architecture, oversee LAN/WAN, boundary systems, and secure enclaves; implement RMF/STIG controls; troubleshoot complex network issues; drive optimization and modernization; mentor senior staff; advise leadership on network strategy. Must obtain/maintain DoD security clearance.

Administer, secure, and maintain enterprise network infrastructure for DoD Live Virtual Constructive environments. Monitor and configure network devices, troubleshoot connectivity and performance issues, maintain documentation, implement network changes, and support compliance with DoD cybersecurity policies and standards. Requires eligibility for U.S. security clearance.

Administer, secure, and maintain enterprise network infrastructure for DoD LVC environments. Monitor performance, implement configurations and patches, ensure STIG compliance, assist incident response, troubleshoot connectivity, and collaborate on network improvements while maintaining required security clearance eligibility.