Principal Windows Systems Administrator Jobs

161 - 180 of 1,770 Jobs

NCIS Cyber Systems Administrator - SecOps | Active TS/SCI clearanceJob Title - NCIS Cyber Systems Administrator - SecOps | Active TS/SCI clearance

General Dynamics Information TechnologyCompany Name - General Dynamics Information Technology

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Quantico, Virginia, USA

Full-time

Type of Requisition: Pipeline 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: DISA STIG, IT Security Operations, Security Content Automation Protocol (SCAP), System Administration Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Transform technology into opportunity as a Cyber Sys

NCIS Cyber Systems Administrator - SecOps | Active TS/SCI clearanceJob Title - NCIS Cyber Systems Administrator - SecOps | Active TS/SCI clearance

General Dynamics Information TechnologyCompany Name - General Dynamics Information Technology

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Quantico, Virginia, USA

Full-time

Systems AdministratorJob Title - Systems Administrator

Apex SystemsCompany Name - Apex Systems

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El Segundo, California, USA

Full-time

Job#: 2037008 Job Description: Apex Systems is seeking a Systems Administrator to design, install, operate, secure and maintain dedicated Program Information Technology Infrastructure. The environment consists of multiple sites and networks with servers and High Performance Computing Clusters running Red Hat Linux in multiple locations around the U.S. and growing. Future expansion will include WNDRVR VxWorks embedded Linux operation systems. Linux and Windows servers host engineering application

Senior Principal Systems Engineer Cyber Engineer (SPY6 Family of Radars) (On-site Marlborough, MA) - P5Job Title - Senior Principal Systems Engineer Cyber Engineer (SPY6 Family of Radars) (On-site Marlborough, MA) - P5

RTX CorporationCompany Name - RTX Corporation

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Marlborough, Massachusetts, USA

Full-time

Date Posted: 2025-06-17 Country: United States of America Location: MA801: Marlborough, MA 1001 Boston Post Road Building 2, Marlborough, MA, 01752 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: Secret At Raytheon, the foundation of everything we do is rooted in our values and a higher calling - to help our nation a

Senior Linux Systems Administrator - 10k Sign on BonusJob Title - Senior Linux Systems Administrator - 10k Sign on Bonus

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

Advanced Systems Administration Specialist & DevOps AdministratorJob Title - Advanced Systems Administration Specialist & DevOps Administrator

General DynamicsCompany Name - General Dynamics

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Scottsdale, Arizona, USA

Full-time

Basic Qualifications Education Requirements: Bachelor's degree in Computer Science, a related field or equivalent experience is required plus a minimum of 5 years of relevant experience; or Master's degree plus 3 years of relevant experience. Clearance Requirements: Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified informatio

Systems AdministratorJob Title - Systems Administrator

AloCompany Name - Alo

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California, USA

Full-time

WHY JOIN ALO? Mindful movement. It's at the core of why we do what we do at Alo-it's our calling. Because mindful movement in the studio leads to better living. It changes who yogis are off the mat, making their lives and their communities better. That's the real meaning of studio-to-street: taking the consciousness from practice on the mat and putting it into practice in life. OVERVIEW The Systems Administrator is responsible for managing and maintaining the organization's public cloud infra

Modernization Cyber Systems Administrator - SA1Job Title - Modernization Cyber Systems Administrator - SA1

Lockheed Martin CorporationCompany Name - Lockheed Martin Corporation

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Maryland, USA

Full-time

Job Description Who You Are: Here, you are going to provide life-cycle services to advance mission in support of Cybersecurity and SIGINT midpoint collection. You will modernize and sustain capabilities to include providing new features and enhancements to Front End Solutions systems. This will allow for products to work at-scale with processing of target communications across multiple types of Midpoint accesses. You will propel the customer into the next phase of product suite modernization by

UC Systems AdministratorJob Title - UC Systems Administrator

General DynamicsCompany Name - General Dynamics

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Oklahoma City, Oklahoma, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: None Clearance Level Must Be Able to Obtain: None Public Trust/Other Required: Other Job Family: Systems Administration Job Qualifications: Skills: Communication, Enterprise IT, Information Technology (IT) Services Certifications: None Experience: 4 + years of related experience ship Required: No Job Description: Systems Administrator Transform technology into opportunity as a Systems Administrator with GDIT. A career

Systems Administrator IIJob Title - Systems Administrator II

Sierra Nevada CorporationCompany Name - Sierra Nevada Corporation

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Remote or Southern Pines, North Carolina, USA

Full-time

Do you have an eye for detail and a passion for developing innovation solutions? Join our team! As a Systems Administrator II, you will be using your skills and expertise to assist in the analysis, development, and configuration of our existing software and systems that address business requirements and processes. You'll be responsible for evaluating the interface between hardware and software, operational requirements, and characteristics of our systems, establishing and documenting system para

Senior Systems Administrator - TS/SCI with PolyJob Title - Senior Systems Administrator - TS/SCI with Poly

LeidosCompany Name - Leidos

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Aurora, Colorado, USA

Full-time

Leidos is seeking a highly skilled Senior Systems Administrator to support mission-critical operations across various laboratory environments. This role focuses on acquiring, configuring, and maintaining computer servers, operating systems, networks, and network file systems to address complex mission-specific challenges. The Senior Systems Administrator will work in dynamic lab settings, providing technical expertise, troubleshooting, and support to ensure reliable and secure IT infrastructure

Senior Principal Systems Engineer: UTMD Sub CPT Lead Cyber and Program Protection ( Onsite) - P5Job Title - Senior Principal Systems Engineer: UTMD Sub CPT Lead Cyber and Program Protection ( Onsite) - P5

RTX CorporationCompany Name - RTX Corporation

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Goddard, Kansas, USA

Full-time

Date Posted: 2025-06-17 Country: United States of America Location: MA311: Woburn MA 225 Presidential 225 Presidential Way Goddard Building 27, Woburn, MA, 01801 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: Secret At Raytheon, the foundation of everything we do is rooted in our values and a higher calling - to hel

Modernization Cyber Systems Administrator - SA2Job Title - Modernization Cyber Systems Administrator - SA2

Lockheed Martin CorporationCompany Name - Lockheed Martin Corporation

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Maryland, USA

Full-time

Job Description The Work: We are seeking professionals interested in Systems Administration. Here, you are going to provide life-cycle services to advance mission in support of Cybersecurity and SIGINT midpoint collection. You will modernize and sustain capabilities to include providing new features and enhancements to Front End Solutions systems. This will allow for products to work at-scale with processing of target communications across multiple types of Midpoint accesses. You will propel t

Junior Systems Administrator, Intelligence SystemsJob Title - Junior Systems Administrator, Intelligence Systems

Aduril IndustriesCompany Name - Aduril Industries

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Reston, Virginia, USA

Full-time

Anduril Industries is a defense technology company with a mission to transform U.S. and allied military capabilities with advanced technology. By bringing the expertise, technology, and business model of the 21st century's most innovative companies to the defense industry, Anduril is changing how military systems are designed, built and sold. Anduril's family of systems is powered by Lattice OS, an AI-powered operating system that turns thousands of data streams into a realtime, 3D command and c

Systems Administrator - SMEJob Title - Systems Administrator - SME

Realm OneCompany Name - Realm One

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Tysons, Virginia, USA

Full-time

We're searching for talented individuals who provide systems administration support services for a sophisticated enterprise computing infrastructure. This program will maximize the effectiveness and efficiency of our country's most important missions both at home and abroad. If you are ready to support a high-performing team that truly makes a difference, then come join us! Job Description: We are looking for a Systems Administrator - SME to join our technology-based program supporting a key g

Systems Administrator (On-Site)Job Title - Systems Administrator (On-Site)

CSSICompany Name - CSSI

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North Charleston, South Carolina, USA

Full-time

Primary duties include: Perform System monitoring and verify the integrity and availability of hardware, network, and server resources and systems. Review System and application logs and verify completion of scheduled jobs, including system backups. Analyze network and server resource consumption and control user access. Install and upgrade software and maintain software licenses. May assist in network modeling, analysis, planning, and coordination between network and data communications hardwa

Systems AdministratorJob Title - Systems Administrator

Booz Allen HamiltonCompany Name - Booz Allen Hamilton

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Colorado Springs, Colorado, USA

Full-time

Job Number: R0211750 Systems Administrator The Opportunity: Your combination of people skills and technical expertise makes you the team hero, solving one problem after another. What if you could use those skills to improve the technology supporting the DoD? We're looking for a systems administrator with a solid background in supporting users in dynamic environments to help us mature the infrastructure and operational posture of our internal Booz Allen network as the scope and demands of our mis

SAR/SCI Systems Administrator - Advanced 1Job Title - SAR/SCI Systems Administrator - Advanced 1

Johns Hopkins University AppliedPhysicsLaboratoryCompany Name - Johns Hopkins University AppliedPhysicsLaboratory

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Laurel, Maryland, USA

Full-time

Description Do you love solving complex technical problems in customized IT environments? Are you passionate about providing advanced system administration support for unique, mission-critical projects? Do you like contributing to innovative projects that directly impact national security? If so, we're looking for someone like you to join our team at APL. We are seeking a talented Tier 3 Systems Administrator to expertly manage, secure, and maintain customized Windows and Linux environments

Systems AdministratorJob Title - Systems Administrator

Freeman Health SystemCompany Name - Freeman Health System

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Joplin, Missouri, USA

Full-time

Our Mission To improve the health of the communities we serve through contemporary, innovative, quality healthcare solutions. Schedule: Full Time About Us - Information Technology (IT) Flexible schedulingOn the job trainingGain exposure to new and advanced technology in the healthcare setting What You'll Do The System Administrator is responsible for maintaining, configuring, and ensuring the reliable operation of IT systems, server infrastructure, and data center resources. This role suppor

Linux Systems Administrator, Sr / Secret / Onsite: Sunnyvale, CAJob Title - Linux Systems Administrator, Sr / Secret / Onsite: Sunnyvale, CA

Lockheed Martin CorporationCompany Name - Lockheed Martin Corporation

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Sunnyvale, California, USA

Full-time

Job Description Join our Lockheed Martin team! Our employees are the core of everything we do, and they are helping the future arrive. As a leading technology innovation company, our team of over 100,000 people works with partners around the world to bring proven performance to our customers' toughest challenges. Headquartered in Bethesda, MD, Lockheed martin has employees based in all 50 states and more than 570 facilities that span more than 70 countries. We are hiring a Linux System Adminis