system administrator and security Jobs

21 - 40 of 277 Jobs

System Administrator (SA2) (Government)Job Title - System Administrator (SA2) (Government)

AT&T Inc.Company Name - AT&T Inc.

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Columbia, Maryland, USA

Full-time

Job Description: AT&T Global Public Sector is a trusted provider of secure, IP enabled, cloud-based, network solutions and professional services to the Federal Government. We are dedicated to recruiting, developing and empowering a diverse, high-performing workforce that is passionate about what they do, committed to our shared values and dedicated to our customers' mission. MAROONMIDNIGHTS (MMN) Provide IT support and solutions developed for National Cryptologic University classified training

System Administrator (SA2) (Government)Job Title - System Administrator (SA2) (Government)

AT&T Inc.Company Name - AT&T Inc.

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San Antonio, Texas, USA

Full-time

System Administrator (SA3) (Government)Job Title - System Administrator (SA3) (Government)

AT&T Inc.Company Name - AT&T Inc.

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San Antonio, Texas, USA

Full-time

Network/System Administrator (Net/Sys Admin) IJob Title - Network/System Administrator (Net/Sys Admin) I

General Dynamics Information TechnologyCompany Name - General Dynamics Information Technology

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Las Vegas, Nevada, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Network Administration Job Qualifications: Skills: Computer Networking, Microsoft Windows Server, Network Systems, Troubleshooting Certifications: None Experience: 1 + years of related experience ship Required: Yes Job Description: Network/System Administrator I Las Vegas, NV NOTE: Adjudicate

System Administrator (SA3) (Government)Job Title - System Administrator (SA3) (Government)

AT&T Inc.Company Name - AT&T Inc.

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Columbia, Maryland, USA

Full-time

System AdministratorJob Title - System Administrator

SilverEdgeCompany Name - SilverEdge

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Fort Meade, Maryland, USA

Full-time

Overview SilverEdge is a premier provider of innovative cyber, software and intelligence solutions addressing everyday challenges to meet mission goals across the DOD and Intel Communities and beyond. We are seeking a system administrator to join our growing team and support our partners on a mission focused program. Demonstrated knowledge of analytical needs and requirements, query syntax, data flows, and traffic manipulation. Meet one of the following two skill sets: Skill set one: program

Network/System Administrator (Net/Sys Admin) IJob Title - Network/System Administrator (Net/Sys Admin) I

General Dynamics Information TechnologyCompany Name - General Dynamics Information Technology

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Las Vegas, Nevada, USA

Full-time

Senior System AdministratorJob Title - Senior System Administrator

Cornerstone DefenseCompany Name - Cornerstone Defense

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Annapolis, Maryland, USA

Full-time

Location: Annapolis Junction, Maryland Type: Contract Job #3710 Title: Senior System Administrator Location: Annapolis Junction, MD Compensation Range: $190 -$210K *Clearance: *Active TS/SCI w/ Polygraph needed to apply * Company Overview: Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall wor

System AdministratorJob Title - System Administrator

Boeing CompanyCompany Name - Boeing Company

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Layton, Utah, USA

Full-time

This posting is for a contract assignment and is not a full-time employment offer with Boeing. Candidates selected for roles will be employed as contract workers through a Boeing approved 3rd party for the duration of the specified project. Oversees system integration, hardware and software installation, configuration and disposition of servers and workstations to support the architecture. Provides complex problem resolution, root cause analysis and technical support for delivery systems. Partic

Linux System Administrator (Top Secret clearance required)Job Title - Linux System Administrator (Top Secret clearance required)

BlackFern RecruitmentCompany Name - BlackFern Recruitment

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Sarasota, Florida, USA

Full-time

Security clearance: Active Top Secret clearance required. Company: We have deep experience in signal processing application and common services development for the National agencies of the Intelligence Community (IC) and the Department of Defense. We develop and deploy multiple applications and system infrastructures for use in client mission operations. We specialize in the development of mission-oriented signal processing algorithms, applications, and associated services for our customers. Th

System Administrator (Control Systems)Job Title - System Administrator (Control Systems)

Magma IT TechnologiesCompany Name - Magma IT Technologies

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Dallas, Texas, USA

Contract

PLEASE DON T SHARE ME H1Bs NEED LOCAL TO (TX) Role: System Administrator (Control Systems) Location: Dallas, TX Duration: long Term Job Description: We are seeking a highly skilled L3 System Administrator with expertise in Windows, Linux, VMware, and Nutanix technologies to support and maintain our control system infrastructure. The role involves managing physical and virtual servers, ensuring system security and compliance, and supporting 24/7 operations in a regulated utility environment. Key

Service Desk System AdministratorJob Title - Service Desk System Administrator

General DynamicsCompany Name - General Dynamics

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Newington, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret/SCI Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Communication, Technical Training, Troubleshooting Hardware Certifications: None Experience: 3 + years of related experience ship Required: Yes Job Description: Job Description: Seize your opportunity to make a personal impact as a Service Desk System Adm

System AdministratorJob Title - System Administrator

Knowledge Management, IncCompany Name - Knowledge Management, Inc

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Charleston, South Carolina, USA

Contract

Knowledge Management, Inc. (KMI) is a Small Disadvantaged Business (SDB) providing Information Technology, Cyber Security, Data Analytics and Professional services to the Federal markets. Since 1998, our solutions and services have improved our client's performance and operational effectiveness, while reducing costs and mapping technology needs for tomorrow's requirements. Title: System Administrator (SA) Locations: Charleston, SC (Passport Agency) # of open positions: 2 Shift: 2nd shift, 4 pm

System AdministratorJob Title - System Administrator

Maxar Technologies Holdings IncCompany Name - Maxar Technologies Holdings Inc

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Westminster, Colorado, USA

Full-time

Please review the job details below. Maxar is seeking an experienced System Administrator with familiarity with implementing and maintaining CMMC security controls and procedures to contribute to an agile and fast-paced software development team environment in support of our USG customer's national security mission. We are seeking people who embrace teamwork and knowledge-sharing and thrive in a culture of continuous improvement. The ideal candidate will value both collaboration and independent

System AdministratorJob Title - System Administrator

LeidosCompany Name - Leidos

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Omaha, Nebraska, USA

Full-time

System Administrator (Offutt AFB) - Leidos Do mission-critical infrastructure and cutting-edge cloud migrations get your pulse racing? At Leidos, you'll be the linchpin of Air Force ISR operations-building rock-solid Windows/Linux environments, safeguarding top-secret data, and architecting the next wave of AWS/Azure solutions. What You'll Own End-to-End Server Maestro Lead the install, configuration, tuning, and 24/7 support of Windows & Linux servers, storage arrays, and databases-ensuring p

Senior Principal Linux System AdministratorJob Title - Senior Principal Linux System Administrator

RaytheonCompany Name - Raytheon

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Aurora, Colorado, USA

Full-time

Date Posted: 2025-06-23 Country: United States of America Location: CO112: Buckley AFB 18500 East 6th Ave 18500 East 6th Avenue Buckley AFB, Aurora, CO, 80011 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date.Security Clearance: TS/SCI with Polygraph Senior Principal Linux System Administrator - Aurora, CO, must have in scope active TS/SCI with po

Senior Linux System AdministratorJob Title - Senior Linux System Administrator

Zachary Piper Solutions, LLCCompany Name - Zachary Piper Solutions, LLC

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Aberdeen Proving Ground, Maryland, USA

Full-time

Piper Companies is looking for a Senior Linux System Administrator to join DoD consulting company. This position is onsite in Aberdeen Proving Ground, MD. Essential Duties of the Sr Linux System Administrator: Install, configure, and support an organization's local area network (LAN), wide area network (WAN), and Internet systems or a segment of a network system.Monitor network to ensure network availability to all system users and may perform necessary maintenance to support network availabili

Master Linux System AdministratorJob Title - Master Linux System Administrator

Zachary Piper Solutions, LLCCompany Name - Zachary Piper Solutions, LLC

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San Diego, California, USA

Full-time

Piper Companies is looking for a Master Linux System Administrator to join DoD consulting company. This position is onsite in San Diego, CA. Essential Duties of the Master Linux System Administrator: Install, configure, and support an organization's local area network (LAN), wide area network (WAN), and Internet systems or a segment of a network system.Monitor network to ensure network availability to all system users and may perform necessary maintenance to support network availability.May ass

Senior Linux System AdministratorJob Title - Senior Linux System Administrator

Zachary Piper Solutions, LLCCompany Name - Zachary Piper Solutions, LLC

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San Diego, California, USA

Full-time

Piper Companies is looking for a Senior Linux System Administrator to join DoD consulting company. This position is onsite in San Diego, CA. Essential Duties of the Sr Linux System Administrator: Install, configure, and support an organization's local area network (LAN), wide area network (WAN), and Internet systems or a segment of a network system.Monitor network to ensure network availability to all system users and may perform necessary maintenance to support network availability.May assist

Jr. System AdministratorJob Title - Jr. System Administrator

LeidosCompany Name - Leidos

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Shiloh, Illinois, USA

Full-time

The Defense group at Leidos has a career opening for a Jr. System Administrator on a DISA contract. This role is primarily on the customer site at Ft Meade, MD. Administrator will provide support for assigned systems supporting Joint Worldwide Intelligence Communications System (JWICS). PRIMARY RESPONSIBILITIES: The candidate must be able to work independently to maintain the smooth operation of a multi-user computer systems, including coordination with customer and other administrators.Communi