Network administrator jobs in Gaithersburg, MD and nearby (708 jobs)

Systems Administrator (Windows/Linux)

Command Post Technologies, Inc.

Arlington, VA

Troubleshoot operating system, application, and server connectivity issues and coordinate resolution with network engineering and cybersecurity personnel.

Systems Administrator - Intermediate

Johns Hopkins Applied Physics Laboratory

Laurel, MD

• $100,000 USD / year

We are looking for a skilled Intermediate Systems Administrator who will ensure the reliability, security, and performance of our IT environments - including stand-alone systems, networked…

HPC/Linux System Administrator 3

Columbia Technology Partners

Annapolis Junction, MD

• $160,000 to $190,000 USD / year

Columbia Technology Partners is seeking a System Administrator 3 to support the implementation, maintenance, and optimization of IT systems across complex enterprise environments.

System Administrator 3

Columbia Technology Partners

Annapolis Junction, MD

• $140,000 to $175,000 USD / year

Columbia Technology Partners is seeking a System Administrator 3 to support mission-critical systems in a dynamic and highly technical environment. The selected candidate will be…

System Administrator 2

Columbia Technology Partners

Annapolis Junction, MD

• $125,000 to $150,000 USD / year

Columbia Technology Partners is seeking a System Administrator 2 to support the implementation, maintenance, and optimization of IT systems across enterprise environments.

Systems Administrator

CACI

Springfield, VA

Must have Security+ certification or DoD 8570 Level II equivalent within 90 days of hire

Cloud Ops System Administrator Jr

Cintel Inc

Arlington, VA

Must live in the National Capital Region to support SIPR when required

Network Administrator II

Invictus International Consulting, LLC

Alexandria, VA

• Up to $160,000 USD / year

Must possess current DoD 8570 IAT II and CCNA (or equivalent) certifications

System Administrator (Linux, AWS, BigFix)

Power3 Solutions

Fort Meade, MD

We are hiring a System Administrator (Linux, AWS, BigFix) to work in the Fort Meade, MD vicinity. Position location is subject to change based on central MD client's needs.

Sr. System Administrator (AWS, Linux)

Power3 Solutions

Fort Meade, MD

We are hiring a Sr. System Administrator (AWS, Linux) to work in the Fort Meade, MD vicinity. Position location is subject to change based on central MD client's needs.

Network Administrator

M9 Solutions

Bethesda, MD

M9 Solutions is seeking a Network Administrator to work on-site in support of a government contract for a client located in Bethesda, MD. An active Public Trust clearance is required.

System Administrator

Avalore, LLC

Arlington, VA

The System Administrator is responsible for the daily operation, maintenance, and security of the War Data Platform (WDP) infrastructure. This person will perform hands-on system…

Linux Systems Administrator

SAIC

Chantilly, VA

…efficiently, and reliably. SAIC is seeking a skilled Linux Systems Administrator who thrives in complex enterprise environments and enjoys solving challenging technical problems across…

System Administrator (2026-0251)

Acclaim Technical Services

McLean, VA

• $140,000 to $160,000 USD / year

Acclaim Technical Services, founded in 2000, is a leading cyber operations, intelligence solutions and operations, network infrastructure, engineering and business enablement and enterprise…

Network Administrator - TS/SCI w CI Poly

Modern Government Solutions

McLean, VA

• $120,000 to $180,000 USD / year

Must possess an active DoD TS/SCI with CI Polygraph security clearance

Windows System Administrator, Level 2

Independent Software

Columbia, MD

Current DoD 8570 IAT Level II certification required · Must possess an active TS SCI with appropriate Polygraph to be considered for this role

System Administrator

Entarian

College Park, MD

Entarian is seeking a System Administrator to join a technical team dedicated to the operations and maintenance of the ground systems for NOAA Office of Satellite and Product Operations…

Systems Administrator (Skillbridge Intern 1) - 31053

Huntington Ingalls Industries

Columbia, MD

Must have an active Secret level U.S · Must have DoD 8140 / 8570 compliance certification (i.e., Security+)

IT Systems Administrator (Multiple Levels)

Noblis

Chantilly, VA

Diagnose and resolve complex infrastructure, server, and network failures; handle specialized system outages and configuration changes (mostly in a cloud environment.

Embedded Security Systems Administrator - (Washington D.C)

JobStack, Inc.

Silver Spring, MD

• $130,000 to $170,000 USD / year

Must possess an active Top Secret clearance or be eligible to obtain one

Mission Assurance System Administrator - NISSC 3 - DC

Amentum

Washington, DC

• $150,000 to $160,000 USD / year

Position Title: Mission Assurance System Administrator

Linux System Administrator

MANTECH

Laurel, MD

Must possess an active TS/SCI clearance with Polygraph

DevOps Platform Engineer and Linux Systems Administrator

Absolute Business Solutions Corp

Bethesda, MD

ABSC has an exciting opening for a TS/SCI-cleared DevOps Platform Engineer and Linux Systems Administrator supporting DIA-NDOC’s D3P modernization under the DTP contract. You will operate…

System Administrator - Secret Clearance Required

General Dynamics Information Technology

Falls Church, VA

System Administrator (IT Operations) Work Hours 6am - 2:30pm Monday - Friday

Senior Systems Administrator (L3) – Azure Government & Windows Infrastructure

Virtual Service Operations

Reston, VA

• $115,000 to $135,000 USD / year

Are you looking to take the next steps in your career as a Senior Systems Administrator? Let’s chat and see if we are a good match!