principal windows systems administrator Jobs

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Systems Administrator - TS/SCI w/Polygraph (3rd Shift)

General Dynamics

McLean, 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 + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Communication, Computer Systems, Troubleshooting, Video Processing Certifications: None Experience: 3 + years of related experience ship Required: Yes Job Description: General Dynamics Information Technology has an immediate opening for a Syste

Systems Administrator

Leidos

Springfield, Virginia, USA

Full-time

The Multi-Domain Solutions (MDS) division at Leidos is seeking a detail-oriented and experienced Systems Administrator to manage the installation, configuration, administration, and maintenance of enterprise systems and associated hardware. The ideal candidate will play a key role in supporting IT infrastructure, ensuring system reliability, performance, and security across physical and virtual environments. Primary Responsibilities: Install, configure, and maintain systems, including servers a

Systems Administrator

General Dynamics

St. Louis, Missouri, 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: Systems Administration Job Qualifications: Skills: Desktop Support Management, VTC, Workstations Certifications: None Experience: 3 + years of related experience ship Required: Yes Job Description: Transform technology into opportunity as a Systems Administrator with GDIT. A career in enterpris

NAVAIR Systems Administrator

American Systems Corporation

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

Sr. Systems Administrator

RTX Corporation

Tucson, Arizona, USA

Full-time

Date Posted: 2025-06-19 Country: United States of America Location: AZ888: RMS AP Bldg 928 1151 East Hermans Road Building 928, Tucson, AZ, 85706 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 higher calling - to help our nation

Advanced Systems Administration Specialist & DevOps Administrator

General Dynamics

Dedham, Massachusetts, USA

Full-time

Basic Qualifications 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 information. Due to the nature of w

Senior Systems Administrator (F2F INTERVIEW) :: W2 :: Dallas ,TX

Stellent IT LLC

Dallas, Texas, USA

Contract, Third Party

Job Title: Senior Systems Administrator (F2F interview) Location: On-Site Dallas, TX Role Type: Contract to Hire Visa- GC Length of Contract: 6 month W2 : Interview Process: 1st interview TEAMs with hiring manager 2nd interview TEAMs with hiring manager and others 3rd interview On-site **MUST HAVES** These are to be cut/pasted as part of your candidate submittal. Do not remove any of the items when submitting. If your candidate does not have all the must-haves, please indicate next t

Linux Systems Administrator

Robert Half

La Vergne, Tennessee, USA

Full-time

Description We are looking for an experienced Linux Systems Administrator to join our team in LaVergne, Tennessee. This role involves managing and optimizing Ubuntu servers, ensuring system security, and leveraging automation tools for streamlined operations. Ideal candidates will possess strong scripting skills and expertise in analyzing system logs for actionable insights. Responsibilities: Install, configure, and maintain Ubuntu servers to ensure optimal performance and reliability. Monitor

Systems Administrator

Robert Half

Grand Rapids, Michigan, USA

Full-time

Description We are looking for a skilled Systems Administrator to manage and optimize our client's network and server infrastructure in Grand Rapids, Michigan. This position requires expertise in on-premise Windows Server environments, ensuring seamless operations, upgrades, patching, maintenance and support. The ideal candidate will play a critical role in maintaining system reliability, driving innovation, and guiding less experienced team members. Responsibilities: Design, manage, and troubl

LINUX Sr Principal Systems Engineer - Active Top Secret Required

General Dynamics

Washington, District of Columbia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Systems Engineering Job Qualifications: Skills: Computer Engineering, Linux, Red Hat Enterprise Linux (RHEL) Certifications: None Experience: 10 + years of related experience ship Required: Yes Job Description: Job Description Senior Principal Systems Engineer - Linux Design, deploy, integrate and maintain Li

Systems Administrator

Robert Half

Midland, Texas, USA

Full-time

Description Our client is currently seeking a System Administrator reporting to the Sr. Infrastructure Manager in Midland, Texas. This position will be responsible for providing system administration for all PR offices and data centers. In addition, the successful candidate will have a deep and broad knowledge of cloud infrastructure, SaaS, physical / virtual servers, and networking. There is flexibility with the level and title of this role depending on the candidate's skillset, qualifications

IT PACS Associate Systems Administrator

Commonspirit Health

Phoenix, Arizona, USA

Full-time

Overview Inspired by faith. Driven by innovation. Powered by humankindness. CommonSpirit Health is building a healthier future for all through its integrated health services. As one of the nation's largest nonprofit Catholic healthcare organizations, CommonSpirit Health delivers more than 20 million patient encounters annually through more than 2,300 clinics, care sites and 137 hospital-based locations, in addition to its home-based services and virtual care offerings. CommonSpirit has more tha

Senior Linux Systems Administrator

Cornerstone Defense

No location provided

Full-time

Type: Contract Job #3699 Senior Linux Systems Administrator Aurora, CO Active TS/SCI with Poly Compensation Range: $125,000 - $145,000 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 work/life experience they have supporting the mission. Our Team is pushed every day to use thei

Systems Administrator

Leidos

Chantilly, Virginia, USA

Full-time

The Multi-Domain Solutions (MDS) division at Leidos is seeking a detail-oriented and experienced Systems Administrator to manage the installation, configuration, administration, and maintenance of enterprise systems and associated hardware. The ideal candidate will play a key role in supporting IT infrastructure, ensuring system reliability, performance, and security across physical and virtual environments. Primary Responsibilities: Install, configure, and maintain systems, including servers a

Systems Administrator, Staff / Secret / Onsite - Huntsville, AL

Lockheed Martin Corporation

Huntsville, Alabama, USA

Full-time

Job Description About Us: 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, MD, Lockheed Martin has employees based in all 50 states and more than 570 facilities that span 70 countries. The Enterprise Business and Digital Transformation (EBDT) o

Systems Administrator Intermediate - TS/SCI required

General Dynamics

Fort Belvoir, 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 + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Computer Servers, Information Technology (IT) Systems, Systems Management Certifications: None Experience: 7 + years of related experience ship Required: No Job Description: Systems Administrator Intermediate - TS/SCI required Transform techno

IT Systems Administrator

Aziro Technologies LLC

Palo Alto, California, USA

Contract

Job Title: IT Systems Administrator Location: Palo Alto CA Duration: 6 Months We're seeking a motivated and detail-oriented System Administrator to join our growing IT team here at Rubrik. This role is ideal for someone with approximately 3 years of hands-on experience in system administration, eager to expand their skills across a diverse technology stack and contribute to the stability and performance of our critical infrastructure. This position will report to the Director of Global IT and y

Principal Information Systems Engineer - Onsite Tucson, AZ

RTX Corporation

Tucson, Arizona, USA

Full-time

Date Posted: 2025-06-11 Country: United States of America Location: AZ201: RMS AP Bldg 801 1151 East Hermans Road Building 801, Tucson, AZ, 85756 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 and

Systems Administrator

Robert Half

Okmulgee, Oklahoma, USA

Full-time

Description Position Summary: We are seeking a proactive and results-driven Network Administrator to manage and support our Windows-based infrastructure, VMware virtualization environment (vCenter), and Cisco networking systems. This role requires a detail-oriented detail oriented who is able to delegate effectively, follow through on tasks, and drive initiatives to completion with minimal supervision. Key Responsibilities: Administer, maintain, and troubleshoot Windows Server environments, Acti

Mid Systems Administrator

Booz Allen Hamilton

Warner Robins, Georgia, USA

Full-time

Job Number: R0221293 Systems Administrator, Mid The Opportunity: Your combination of people skills and system administrator knowledge makes you the team hero, solving one problem after another. What if you could use those skills to improve the te chn ology supporting Air Force Intelligence, Surveillance, and Reconnaissance ( ISR ) ? We're looking for a system administrator to build and maintain the infrastructure solutions that meet customer needs and take advantage of cloud capabilities and se