principal windows systems administrator Jobs

201 - 220 of 1,962 Jobs

Linux Systems Administrator, Sr / Onsite: Huntsville, ALJob Title - Linux Systems Administrator, Sr / Onsite: Huntsville, AL

Lockheed Martin CorporationCompany Name - Lockheed Martin Corporation

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Huntsville, Alabama, USA

Full-time

Job Description 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 employees work with our partners around the world to bring the latest technology to our customers' toughest challenges. Headquartered in Bethesda, Maryland, US, Lockheed Martin has employees based in all 50 states and more than 570 facilities that span 70 countries. Lockheed Martin Enterprise Operations (EO) is actively see

Systems Administrator SeniorJob Title - Systems Administrator Senior

General DynamicsCompany Name - General Dynamics

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Florida, 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: Infrastructure Management (IM), Microsoft Windows Server, System Administration Certifications: None Experience: 3 + years of related experience ship Required: Yes Job Description: Transform technology into opportunity as a Systems Administrator Senior wit

VMware Systems AdministratorJob Title - VMware Systems Administrator

SAICCompany Name - SAIC

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Washington, District of Columbia, USA

Full-time

Job ID: 2506948 Location: WASHINGTON, DC, US Date Posted: 2025-07-08 Category: Information Technology Subcategory: Sys Administrator Schedule: Full-time Shift: Day Job Travel: Yes, 25 % of the Time Minimum Clearance Required: None Clearance Level Must Be Able to Obtain: Public Trust Potential for Remote Work: No Description SAIC is hiring a VMware Systems Administrator to support HHS On-Site in Washington, DC. The VMware Systems Administrator will provide ongoing support to Executives

Enterprise Senior Systems AdministratorJob Title - Enterprise Senior Systems Administrator

General DynamicsCompany Name - General Dynamics

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Albuquerque, New Mexico, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Secret Clearance Level Must Be Able to Obtain: Top Secret Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Critical Systems, Enterprise Servers, Operating Systems (OS) Certifications: None Experience: 8 + years of related experience ship Required: Yes Job Description: GDIT seeks a highly motivated and experienced Enterprise Senior Systems Engineer to support the Defense Th

Senior Systems Administrator, Classified ITJob Title - Senior Systems Administrator, Classified IT

Aduril IndustriesCompany Name - Aduril Industries

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Washington, District of Columbia, 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 SeniorJob Title - Systems Administrator Senior

General DynamicsCompany Name - General Dynamics

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Hayward, California, 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: Information Technology (IT) Systems, System Administration, VMware Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Please take this opportunity to join one of GDIT's fastest long-standing growing program

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 Administrator 3Job Title - Systems Administrator 3

Realm OneCompany Name - Realm One

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Annapolis, Maryland, USA

Full-time

Are you ready to KANGAROO into action at RealmOne! 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 us on this journey as w

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

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

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

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

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

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

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

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

NAVAIR Systems AdministratorJob Title - NAVAIR Systems Administrator

American Systems CorporationCompany Name - American Systems Corporation

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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 System Administrator with demonstrated experience performing System Administration functions on Aircraft or Weapons Systems networks, and maintaining and upgrading network infrastructures across the NAVAIR commu

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