system administrator and security Jobs

41 - 60 of 278 Jobs

Azure Cloud System AdministratorJob Title - Azure Cloud System Administrator

BlueHaloCompany Name - BlueHalo

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Maryland, USA

Full-time

At BlueHalo an AV company, we don't just witness the future of national security - we create it. We're on the search for a Azure Cloud System Administrator to embark on challenging, mission-critical projects near any one of our nationwide facilities, directly impacting the nation's security and intelligence mission. In our team of problem solvers, innovators, technologists, and operators, you'll be at the forefront of driving meaningful change and making an enduring impact. The Azure Cloud Syst

Jr. System AdministratorJob Title - Jr. System Administrator

LeidosCompany Name - Leidos

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O'Fallon, Illinois, USA

Full-time

JOB SUMMARY: Leidos is seeking a candidate to fill a Junior System Administration position supporting DISA's GSM-O contract at Scott AFB, IL. The System Administrator is responsible for protecting DISA's information and information systems from unauthorized access, use, disclosure, disruption, modification, perusal, inspection, recording and destruction. PRIMARY RESPONSIBILITIES: The candidate must be able to work independently to maintain the smooth operation of a multi-user computer systems,

Windows Linux System AdministratorJob Title - Windows Linux System Administrator

Rose InternationalCompany Name - Rose International

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Dallas, Texas, USA

Full-time

Date Posted: 06/30/2025 Hiring Organization: Rose International Position Number: 484801 Industry: Professional Services Job Title: Windows Linux System Administrator Job Location: Dallas, TX, USA, 75201 Work Model: Onsite Shift: 9 AM - 6 PM Employment Type: Temporary FT/PT: Full-Time Estimated Duration (In months): 7 Min Hourly Rate($): 50.00 Max Hourly Rate($): 50.00 Must Have Skills/Attributes: AWS, Azure, CI/CD tools, GitHub Experience Desired: Windows/Linux system admin, Azure/AWS (

Restore System Administrator - TS/SCI w/PolyJob Title - Restore System Administrator - TS/SCI w/Poly

General DynamicsCompany Name - General Dynamics

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Annapolis, Maryland, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Backup and Recovery (Software), Disaster Recovery (DR), Information Technology (IT) Systems Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Restore System Administrator Transform

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

General DynamicsCompany Name - General Dynamics

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Portland, Oregon, 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: The primary function will be to organize, install, and support

System Administrator (SA1) (Government)Job Title - System Administrator (SA1) (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

Upgraded Early Warning Radar (UEWR) Site Analyst/System AdministratorJob Title - Upgraded Early Warning Radar (UEWR) Site Analyst/System Administrator

InDyneCompany Name - InDyne

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Pituffik, Avannaata, Greenland

Full-time

InDyne is a full-service military, civilian and commercial operations company. Our Mission is to provide tailored cost effective, quality services and solutions. Our Vision is to exceed customer expectations by delivering results through agility, flexibility and responsiveness. Our Core Values include integrity, trust and loyalty. Note: The duties specified in this position description are not intended to be all-inclusive. Other reasonable and job-related duties may be assigned at the superviso

Sr. Principal Linux System AdministratorJob Title - Sr. Principal Linux System Administrator

RaytheonCompany Name - Raytheon

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Aurora, Colorado, USA

Full-time

Date Posted: 2025-07-01 Country: United States of America Location: CO108: 16201 East Centretech Parkway 16201 East Centretech Parkway Building S78, 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 Sr. Principal Linux System Administrator - Aurora, CO, must have an active TS/SCI CI Poly

System Administrator, SeniorJob Title - System Administrator, Senior

Parsons Services CompanyCompany Name - Parsons Services Company

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Annapolis, Maryland, USA

Full-time

In a world of possibilities, pursue one with endless opportunities. Imagine Next! When it comes to what you want in your career, if you can imagine it, you can do it at Parsons. Imagine a career working with exceptional people sharing a common quest. Imagine a workplace where you can be yourself. Where you can thrive. Where you can find your next, right now. We've got what you're looking for. Job Description: Parsons is the premier national security and critical infrastructure solutions provi

ABAD System AdministratorJob Title - ABAD System Administrator

Parsons Services CompanyCompany Name - Parsons Services Company

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Huntsville, Alabama, USA

Full-time

In a world of possibilities, pursue one with endless opportunities. Imagine Next! When it comes to what you want in your career, if you can imagine it, you can do it at Parsons. Imagine a career working with exceptional people sharing a common quest. Imagine a workplace where you can be yourself. Where you can thrive. Where you can find your next, right now. We've got what you're looking for. Job Description: Parsons is looking for an amazingly talented System Administrator to join our team!

System AdministratorJob Title - System Administrator

LeidosCompany Name - Leidos

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Orlando, Florida, USA

Full-time

Are you an experienced System Administrator looking for your next challenge? Your search ends here! We have an exciting opportunity for you to support several Programs in the Orlando Area. Your expertise will guide the definition, implementation, and delivery of capability focused on Cyber Training systems and Synthetic Environment Generation. You'll have the chance to work with a broad range of systems, providing overall support for various critical systems. Join our team and make a difference

Linux/Windows System AdministratorJob Title - Linux/Windows System Administrator

Lockheed Martin CorporationCompany Name - Lockheed Martin Corporation

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Moorestown, New Jersey, USA

Full-time

Job Description WHAT WE'RE DOING The AEGIS O&M program is seeking a Linux/Windows System Administrator in Moorestown NJ. This facility houses both Navy and Lockheed Martin personnel. It primarily serves as a research and development facility for the AEGIS Combat System. AEGIS is a revolutionary naval air defense system capable of guarding against missile threats from land, sea and air. WHO WE ARE Our current team handles everything from: Periodically travelling to different customer sites ar

Senior Windows System AdministratorJob Title - Senior Windows System Administrator

RaytheonCompany Name - Raytheon

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El Segundo, California, USA

Full-time

Date Posted: 2025-06-18 Country: United States of America Location: CA222: 2006 E El Segundo Blvd BldgE04 2006 East El Segundo Boulevard Building E04, El Segundo, CA, 90245 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: The ability to obtain and maintain a U.S. government issued security clearance is required.Security Clearance: DoD Clearance: Secret At Raytheon, the foundation of everything we do is rooted in our values and a higher callin

System Administrator 1Job Title - System Administrator 1

Realm OneCompany Name - Realm One

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Annapolis, Maryland, USA

Full-time

RealmOne is the GOAT - where your career can reach the greatest heights! RealmOne was built on the principle that people matter first and foremost. We believe in providing a strong work/life balance by investing in our employees and encouraging professional and personal growth. We do this by offering exceptional benefits, flexible schedules, and the tools necessary to achieve success through paid training, mentoring, and the opportunity to work alongside top-notch security professionals. Join u

Linux System Administrator - Secret Clearance preferred (On-Site)Job Title - Linux System Administrator - Secret Clearance preferred (On-Site)

General DynamicsCompany Name - General Dynamics

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Oakton, Virginia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: None Clearance Level Must Be Able to Obtain: Secret Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Linux System Administration & Networking, RedHat, Troubleshooting Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Discover a career that is challenging, impactful, and mission-critical. Join our team as a Linux System Adm

Linux System AdministratorJob Title - Linux System Administrator

ManTechCompany Name - ManTech

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Fort Meade, Maryland, USA

Full-time

ManTech seeks an experienced and passionate, career and customer-oriented Linux System Administrator to join our team located in the Fort Meade, MD area. Responsibilities include, but are not limited to: Design, engineer, and implement automated hardening scripts for internal servers adding scalability while circumventing manual process for new operating system rollout.Configure host-based intrusion detection systems.Monitor and troubleshoot/examine detected anomalies.Developed automation scrip

Network Operation Center (NOC) System Administrator - NISSC II - CMSFSJob Title - Network Operation Center (NOC) System Administrator - NISSC II - CMSFS

JacobsCompany Name - Jacobs

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Colorado Springs, Colorado, USA

Full-time

Position Title: Network Operation Center (NOC) System Administrator Location: Cheyenne Mountain Space Force Station, Colorado Springs, CO Relocation Assistance: None available at this time Remote/Telework: NO - Not available for this position Clearance Type: DoD Top Secret w/ SCI Eligibility Shift: Shift work is required to support 24x7 operations. It is important to be available to work any shift/designated hours required including nights, weekends, and holidays on a modified Panama schedu

Senior Windows System AdministratorJob Title - Senior Windows System Administrator

General DynamicsCompany Name - General Dynamics

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Sierra Vista, Arizona, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Secret Clearance Level Must Be Able to Obtain: Secret Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Microsoft Windows Server Platform, Virtual Servers, Windows Server Update Services (WSUS) Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Transform technology into opportunity as a Senior Window Systems Administrator wit

Senior System Administrator L 3 (Windows, Linux, VMWare)Job Title - Senior System Administrator L 3 (Windows, Linux, VMWare)

Infolob Global, Inc.Company Name - Infolob Global, Inc.

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Dallas, Texas, USA

Contract, Third Party

Position: Senior System Administrator L 3 (Windows, Linux, VMWare) Location: Dallas, TX (Hybrid 3 Days in office) Duration: 6 Months Rate: $ Open/Hour Need resource who can work on Hybrid Role in Dallas, TX Job Description: System Administrator (Control Systems) L3 This position requires a resource with at least 8 years of experience in the given technology areas. The key competencies include subject matter expertise and system administrator experience with Microsoft Windows OS, VMWare, Linu

Sr. System Administrator - VDIJob Title - Sr. System Administrator - VDI

LeidosCompany Name - Leidos

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Odenton, Maryland, USA

Full-time

The Defense group at Leidos has a career opening for a 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: Provide Senior level expertise for Virtual Desktop Infrastructure (VDI) environment.Lead as the Subject Matter Expert on all VDI related issues/needs.Provide support for ticket escalation o