Windows/Linux System Administrator Jobs

161 - 180 of 4,335 Jobs

Linux System AdministratorsJob Title - Linux System Administrators

LeidosCompany Name - Leidos

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Annapolis, Maryland, USA

Full-time

Leidos frequently has exciting opportunities for Linux System Administrators in the National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits ;/b>, including 4 or more weeks Paid Time Off, 11 paid Holidays, 401K with a 6% company

Lead Systems Administrator (Linux/Cloud)Job Title - Lead Systems Administrator (Linux/Cloud)

Judge Group, Inc.Company Name - Judge Group, Inc.

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Elk Grove, California, USA

Full-time

Location: Elk Grove, CA Salary: $130,000.00 USD Annually - $150,000.00 USD Annually Description: Our client is seeking a Lead Systems Administrator to join their Infrastructure team. In this role, you'll be the subject matter expert (SME) overseeing the operations of their hosted datacenter and cloud infrastructure in Google Cloud Platform (Google Cloud Platform). You'll lead efforts in provisioning, automation, troubleshooting, and performance optimization across both physical and virtual e

System Operations/Administrator (Multiple Levels)Job Title - System Operations/Administrator (Multiple Levels)

NoblisCompany Name - Noblis

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Chantilly, Virginia, USA

Full-time

Responsibilities Noblis ESI is seeking a System Operations/Administrator with a background in managing and maintaining desktop computing environments to work with our clients in supporting our customer Mission Integration Directorate (MID). Job Responsibilities Install, configure, and maintain desktop systems, laptops, and peripheral devices. Provide technical support and troubleshooting assistance to end-users for hardware, software, and network-related issues. Monitor system performance and

2025 Fall Co-Op - System Administrator (Onsite)Job Title - 2025 Fall Co-Op - System Administrator (Onsite)

RTX CorporationCompany Name - RTX Corporation

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Cambridge, Massachusetts, USA

Full-time

Date Posted: 2025-06-10 Country: United States of America Location: MA105: BBN Headquarters 10 Moulton Street , Cambridge, MA, 02138 USA Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Security Clearance: None/Not Required RTX Corporation is an Aerospace and Defense company that provides advanced systems and services for commercial, military and government customers worldwide. It comprises three industry-leading businesses - Collins Aerospace, Pratt &

Linux AdministratorJob Title - Linux Administrator

American Systems CorporationCompany Name - American Systems Corporation

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Gaithersburg, Maryland, USA

Full-time

Overview AMERICAN SYSTEMS is an employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of Information Technology, Test & Evaluation, Program Mission Support, Engineering & Analysis, and Training. Responsibilities As a Linux Administrator with AMERICAN SYSTEMS you will have the opportunity to do the following:Collaborate with onsite system design personnel to implement new system software and hardware.Maintain and develop

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

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 (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

Sr. System Administrator- Network Operations CenterJob Title - Sr. System Administrator- Network Operations Center

RaytheonCompany Name - Raytheon

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Springfield, Virginia, USA

Full-time

Date Posted: 2025-05-19 Country: United States of America Location: VA141: 8350 Alban Road, Springfield 8350 Alban Road Suite 700, Springfield, VA, 22150 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 CI Poly - Current Sr. System Administrator- Network Operations Center-Springfield, VA, must have active TS/SCI CI

Principal System Administrator- Network Operations CenterJob Title - Principal System Administrator- Network Operations Center

RaytheonCompany Name - Raytheon

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Springfield, Virginia, USA

Full-time

Date Posted: 2025-06-11 Country: United States of America Location: VA141: 8350 Alban Road, Springfield 8350 Alban Road Suite 700, Springfield, VA, 22150 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 Principal System Administrator- Network Operations Center-Springfield, VA, must have active TS/SCI CI Po

Senior Linux Systems AdministratorJob Title - Senior Linux Systems Administrator

LeidosCompany Name - Leidos

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Annapolis, Maryland, USA

Full-time

Leidos has a new and exciting opportunity for a Senior Linux Systems Administrator in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. At Leidos, we offer competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immed

System Administrator, SeniorJob Title - System Administrator, Senior

SilverEdgeCompany Name - SilverEdge

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Maryland, USA

Full-time

Overview SilverEdge is seeking a Senior System Administrator to serve for a closed restricted network and support other DoD guest systems at various classification level. Tasks include performing installation, troubleshooting and other administrative tasks associated with ongoing maintenance and enhancement of information systems and services. Performs systems planning, management, analysis, integration, installation and training tasks that include all aspects of preparing and implementing a hi

Principal Linux AdministratorJob Title - Principal Linux Administrator

RaytheonCompany Name - Raytheon

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El Segundo, California, USA

Full-time

Date Posted: 2025-06-23 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: Active and transferable U.S. government issued security clearance is required prior to start date.Security Clearance: DoD Clearance: Top Secret At Raytheon, the foundation of everything we do is rooted in our values and a hi

Systems Administrator (LINUX)Job Title - Systems Administrator (LINUX)

NightwingCompany Name - Nightwing

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Sterling, Virginia, USA

Full-time

Nightwing provides technically advanced full-spectrum cyber, data operations, systems integration and intelligence mission support services to meet our customers' most demanding challenges. Our capabilities include cyber space operations, cyber defense and resiliency, vulnerability research, ubiquitous technical surveillance, data intelligence, lifecycle mission enablement, and software modernization. Nightwing brings disruptive technologies, agility, and competitive offerings to customers in th

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

System / Network Administrator / Onsite / Chicago, ILJob Title - System / Network Administrator / Onsite / Chicago, IL

Motion Recruitment Partners, LLCCompany Name - Motion Recruitment Partners, LLC

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Chicago, Illinois, USA

Full-time

An e-commerce manufacturing company is growing their team and looking to bring on a System Administrator skilled in both System and Network Administration. This is an onsite role in Chicago, IL. Ideally, they are looking for someone who has experience with System Administration, specifically with Windows, Hyper-V, O365, Active Directory and PowerShell scripting. On the Network Administration side of things experience with Cisco, Meraki, and Palo Alto firewalls. You will be responsible for the co

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

FSL Linux Systems AdministratorJob Title - FSL Linux Systems Administrator

JacobsCompany Name - Jacobs

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Houston, Texas, USA

Full-time

Are you passionate about human space exploration, understanding the origins of the universe, and working with a passionate and diverse team to make a difference? If you are, we need you! We need your talent, teamwork, and energy to help us achieve great things that inspire people all over the globe. We need you to bring creative ideas and diverse backgrounds to help us envision, shape, and deliver systems that will enable the exploration of space while benefiting people here on Earth. We are exc

Systems Administrator (Trillium, Unix, Linux and Tomcat)Job Title - Systems Administrator (Trillium, Unix, Linux and Tomcat)

SAICCompany Name - SAIC

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Ashburn, Virginia, USA

Full-time

Job ID: 2504336 Location: ASHBURN, VA, US Date Posted: 2025-04-07 Category: Software Subcategory: SW Engineer Schedule: Full-time Shift: Day Job Travel: Yes, 10 % of the Time Minimum Clearance Required: None Clearance Level Must Be Able to Obtain: Public Trust Potential for Remote Work: Yes Description Position Summary We are currently seeking a motivated, career and customer-oriented Systems Administrator (Senior) to join our team in Ashburn, VA to begin an exciting and challenging c

Mid System AdministratorJob Title - Mid System Administrator

Parsons Services CompanyCompany Name - Parsons Services Company

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Quantico, Virginia, 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 Mid System Administrator to join our te

System Administrator IJob Title - System Administrator I

General Dynamics Information TechnologyCompany Name - General Dynamics Information Technology

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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: Communication, Information Technology (IT), Network Components, Operating Systems (OS), Troubleshooting Certifications: None Experience: 4 + years of related experience ship Required: Yes Job Description: Provides support for imple