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# Senior Network Administrator

- **Company:** NexGen Data Systems Inc
- **Location:** Fairfax, VA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Complex Networks, CompTIA Security+, System Configuration, Data Systems, Firmware, Microsoft SQL Server, Windows Servers, Network Administration, Cisco Nexus Switches, Oracle (Applications), Red Hat Enterprise Linux, Diagnostic Tools, Computer Networking Systems, Firewalls (Computer Science), Information Technology, SolarWinds (Software), Software Version Control, Cisco, Vmware
- **Published:** November 13, 2026
- **Apply:** https://www.careerbuilder.com/job-details/senior-network-administrator-fairfax-va--6e50e9c7-a9e1-4973-9af2-be56cbb648e9

## About the Role

Network Administration/Management, Network Administration/Management, Microsoft Windows Server, Microsoft Windows Operating System, VMWare, Microsoft SQL Server, Operating Systems, Oracle Applications, Network Systems, Team Player, Desired/Required Skills:

 * CompTIA Security+.
 * Computing Environment (CE) Certification (i.e., MCSE, Server+, CCNA, RedHat, Palo, etc.) - can be waived for 30 days after project join date.
 * Experience in Computer Science or IT.
 * Three or more years' experience designing, implementing, documenting, and maintaining complex networking solutions.
 * Three or more years' experience configuring, updating, maintaining, administering, and migrating Palo Alto Firewalls.
 * Three or more years' experience with Network Management, Analysis, and troubleshooting tools such as SolarWinds, Cisco Prime, Palo Alto Panorama, Men and Mice, etc.
 * Five or more years' experience configuring, updating, maintaining, and administering the following Cisco technologies: Cisco Nexus (9K, 7K, 5K, and 2K), Cisco

## Description

NexGen Data Systems is seeking a Network Administrator. This position is in a mixed and growing environment currently supporting functional teams and customers that utilize MS Windows server 2019/2022, MS SQL 2019, MS Windows 11, VMWare 7.x.,OEL 8x-9x, and Oracle Operating systems. This position will work with the existing team members who are responsible for designing and supporting multiple complex networks in different locations.

Roles & Responsibilities:

 * Lead team members with strategies to manage, maintain, deploy, troubleshoot and support networks for multiple customer environments.
 * Lead efforts to plan, execute and implement new network implementations.
 * Responsible for creating and maintaining team technical instructions, operating procedures, and policies as needed.
 * Monitor and tune system and network performance for ongoing operation of the network, hardening of the network and reporting of the overall security and operational status.
 * Recommend improvements to the enterprise and manage new SW/HW integrations when required while also providing utilization reports using existing tools to identify problems and corrective actions as needed.
 * Provide support towards the lifecycle of a mixed environment of vendor equipment in the datacenter to include firmware version control and periodic preventive maintenance.
 * Recommend, demonstrate, and implement technologies to help expand, upgrade, and increase efficiency in the current environment.

Other Duties: Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.