Top Network Administrator Jobs

Leads moderately complex network projects, coordinates technical teams, and provides network administration guidance. Designs, deploys, maintains, upgrades, troubleshoots, and documents physical and virtual networks, firewalls, encryption, and Layer 2/3 devices. Develops automated deployment methods, advises technical and management stakeholders, trains junior administrators, conducts network reverse engineering, and supports performance, interoperability, and mission requirements.

Performs routine network and infrastructure administration under supervision, including configuration, provisioning, alert and ticket triage, service requests, connectivity testing, documentation, inventory updates, and change validation. Supports incident response, RMA coordination, site turn-ups, and post-incident reviews while developing scripting, command-line, troubleshooting, and change-management skills. Requires foundational SAN/NAS and storage knowledge, ITSM experience, strong attention to detail, and effective communication.

Own and improve enterprise network segments: deploy and upgrade network infrastructure, tune performance, resolve complex incidents, automate operational tasks, validate SLAs/security, manage vendors, maintain documentation, and mentor junior staff.

Provide hands-on administration and support for high-performance computing networks: configure and maintain switches, routers, and firewalls; ensure STIG compliance; perform backups and disaster recovery; monitor performance; troubleshoot hardware/software issues; document configurations and maintenance.

Design, install, configure, and maintain enterprise LAN/WAN infrastructure and security (routers, switches, firewalls, VPNs). Troubleshoot routing (OSPF/RIP/BGP), switching (VLANs, STP, EtherChannel), and firewall platforms. Enforce DoD/DISA STIGs, perform capacity planning, mentor staff, and support network modernization and integration projects.

Administers and maintains corporate LAN/WAN, disaster recovery, VoIP, security systems, Windows infrastructure, servers, routers, switches, and other network components. Installs, configures, monitors, troubleshoots, upgrades, and repairs network hardware and software. Creates accounts, applies patches, establishes connectivity, documents infrastructure, resolves network issues, tests applications, and provides end-user support. Helps design network solutions and coordinates implementation across a multi-site corporate environment.

Maintain and enhance secure enterprise network services for a federal customer. Troubleshoot incidents, implement network changes, support Cisco ISE and DNA Center, configure VLANs, routing, ACLs, firewalls, VPNs, and segmentation, and assist with network design, equipment deployment, cabling, fiber infrastructure, and wireless troubleshooting. The role requires strong networking fundamentals, Security+ and CCNA certifications, TS/SCI clearance, U.S. citizenship, and onsite work in Newington, Virginia.

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.

Configure, maintain, monitor, and troubleshoot enterprise LAN, WAN, and related network infrastructure. Install and support routers, switches, firewalls, VPNs, wireless systems, load balancers, and other network services. Resolve performance and service disruptions with vendors, carriers, and end users; perform upgrades, patches, capacity planning, and technical support. Maintain network documentation, equipment inventory, business continuity and disaster recovery plans, change management processes, and operational logs.

Deploys, configures, and operates network infrastructure across manufacturing facilities, data centers, and cloud environments. Responsibilities include managing routers, switches, firewalls, VPNs, SD-WAN, wireless systems, AWS and Azure networking, Kubernetes connectivity, and Infrastructure-as-Code automation. The role also involves troubleshooting LAN/WAN issues, coordinating ISPs and cabling vendors, supporting facility systems, maintaining documentation and monitoring, and participating in on-call and incident-response rotations. Travel for site deployments and physical equipment handling are required.

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.

Administer and troubleshoot LAN, WAN, network devices, application connectivity, and virtual server environments onsite at Patuxent River NAS. Maintain network boundary security, investigate security incidents, review and update STIG compliance, remediate vulnerabilities, and support highly available network infrastructure. The role also requires maintaining technical documentation, following customer processes, and coordinating with engineering, management, and customer stakeholders.

Administers and configures Windows Server, Windows workstations, Red Hat Linux systems, Active Directory, SQL databases, data storage, and RAID systems. Manages IT assets and inventories, supports Cisco VoIP, performs cybersecurity scanning and remediation, and assists with accreditation activities. The role requires U.S. citizenship, eligibility for a Secret clearance, technical training or a degree, and at least three years of related experience. LabVIEW, MATLAB, and COMSEC experience are helpful.

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.

Administer and maintain network and systems infrastructure across multiple warehouse facilities. Manage firewalls, switches, wireless networks, Windows servers, Active Directory, IP addressing, VLANs, security controls, monitoring, backups, and documentation. Troubleshoot Tier 2/3 connectivity issues, support warehouse applications and physical security systems, participate in infrastructure rollouts and facility expansions, and provide on-call incident response. Travel between facilities and perform after-hours maintenance as needed.

Supports daily network infrastructure operations across on-premises and cloud environments. Responsibilities include monitoring and maintaining LAN, WAN, Wi-Fi, VPN, VLAN, firewall, switch, router, and access point systems; managing user accounts; troubleshooting connectivity and performance issues; supporting network security, patching, backups, and disaster recovery; documenting configurations; and providing Tier 1–2 end-user support.

Provide OT/ICS network administration and security: perform cybersecurity assessments, design security controls, monitor threats, maintain Cisco and SEL switches, manage cabling, mentor junior admins, support hardware acquisitions, and produce technical documentation while supporting classified programs.

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.

Designs, implements, and maintains enterprise network infrastructure to ensure reliability, security, and performance. Manages networking protocols, enterprise hardware, cloud networking, firewalls, and intrusion prevention systems. Uses AI-powered monitoring and automation tools to improve IT operations and reduce repetitive work. Supports analytics platforms, Microsoft environments, network security, scripting, and SD-WAN initiatives.

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 global network infrastructure, including switches, access points, firewalls, wireless systems, DNS, DHCP, and IT power and cooling systems. Respond to outages, diagnose root causes, migrate domains, support cybersecurity controls, install hardware, and implement data protection measures. Participate in on-call rotations, document procedures, communicate maintenance activities, and support infrastructure projects across multiple locations. The role requires occasional travel, extended maintenance hours, and occasional physical work involving ladders, lifts, and lifting up to 50 pounds.

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.

Manage Othram’s Google Workspace and Apple Mac environment, Ubiquiti/UniFi network infrastructure, endpoint security, physical security systems, laboratory technology, and employee IT support. Responsibilities include device lifecycle management, onboarding and offboarding, access administration, troubleshooting, vendor and license management, documentation, network maintenance, and security response. The role requires hands-on onsite support in offices, laboratory areas, and network facilities, with careful adherence to forensic laboratory access, confidentiality, data integrity, and change-control requirements.

Installs, configures, monitors, and supports enterprise network and server infrastructure, including routers, switches, wireless networks, VPN, voice and data circuits, storage, and operating systems. Maintains documentation, resolves infrastructure issues and tickets, performs backups and disaster recovery, replaces defective components, researches technologies, and supports network projects. Provides internal customer support and may work off-hours or weekends.

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.