Senior IT Systems Administrator Jobs

121 - 140 of 5,945 Jobs

Senior IT System Administrator/System AnalystJob Title - Senior IT System Administrator/System Analyst

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 (IT Program Services)Job Title - Systems Administrator (IT Program Services)

NightwingCompany Name - Nightwing

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Annapolis, Maryland, 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

Systems AdministratorJob Title - Systems Administrator

LeidosCompany Name - Leidos

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Sterling, Virginia, USA

Full-time

Job DescriptionDescription 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 s

Systems AdministratorJob Title - Systems Administrator

LeidosCompany Name - Leidos

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Merrifield, Virginia, USA

Full-time

Systems AdministratorJob Title - Systems Administrator

LeidosCompany Name - Leidos

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Herndon, Virginia, USA

Full-time

Systems AdministratorJob Title - Systems Administrator

LeidosCompany Name - Leidos

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Manassas, Virginia, USA

Full-time

Systems AdministratorJob Title - Systems Administrator

LeidosCompany Name - Leidos

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Reston, Virginia, USA

Full-time

Systems AdministratorJob Title - Systems Administrator

LeidosCompany Name - Leidos

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Falls Church, Virginia, USA

Full-time

Systems AdministratorJob Title - Systems Administrator

LeidosCompany Name - Leidos

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Chantilly, Virginia, USA

Full-time

Systems AdministratorJob Title - Systems Administrator

LeidosCompany Name - Leidos

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Aldie, Virginia, USA

Full-time

Systems AdministratorJob Title - Systems Administrator

LeidosCompany Name - Leidos

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Burke, Virginia, USA

Full-time

Sr. Systems AdministratorJob Title - Sr. Systems Administrator

RTX CorporationCompany Name - RTX Corporation

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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

PACS Systems Administrator | Glen MillsJob Title - PACS Systems Administrator | Glen Mills

ChristianaCareCompany Name - ChristianaCare

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Pennsylvania, USA

Full-time

Are you interested in working for an organization passionate about love and excellence? ChristianaCare is a nonprofit health system with a mission of service. We believe that the key to providing truly excellent health care is to partner with our patients and their families, building a system of care that is effective, affordable and valuable to everyone who is touched by it. ChristianaCare, is looking for a Full-Time PACS Systems Administrator who will utilize our core values of Love & Excell

Systems AdministratorJob Title - Systems Administrator

Robert HalfCompany Name - Robert Half

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Cedar Rapids, Iowa, USA

Full-time

Description We are looking for a skilled Systems Administrator to our Clients team in Cedar Rapids, Iowa. The ideal candidate will have a strong background in managing and maintaining IT infrastructure, ensuring system reliability and efficiency - most importantly experience with M365 and it's cloud functionalities. This role offers an opportunity to collaborate on innovative solutions and optimize organizational technology in many different environments. Please apply now or call . This role i

SharePoint Systems AdministratorJob Title - SharePoint Systems Administrator

LeidosCompany Name - Leidos

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Alexandria, Virginia, USA

Full-time

Description Leidos is seeking a senior SharePoint System Administrator to support a large enterprise IT contract for the DOD. The SharePoint System Administrator will support infrastructure services, operations, and maintenance across multiple enclaves of different classifications with remote administration for server farms located in centralized data centers. The SharePoint Admin shall deploy, operate, and maintain SharePoint services, including load balancing, PKI authentication, and claims-ba

Systems AdministratorJob Title - Systems Administrator

LeidosCompany Name - Leidos

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Chantilly, Virginia, USA

Full-time

Description 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, includi

Systems AdministratorJob Title - Systems Administrator

LeidosCompany Name - Leidos

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Springfield, Virginia, USA

Full-time

Junior Systems Administrator/onsiteJob Title - Junior Systems Administrator/onsite

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

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Trenton, New Jersey, USA

Full-time

A rapidly growing company in Central NJ is looking to bring on a Junior Systems Administrator to join their IT operations team. This is a full-time opportunity ideal for candidates looking to develop their infrastructure skills while working with a broad range of technologies including Windows, MacOS, Microsoft 365, and endpoint management tools like Intune. Looking to grow your IT career in a supportive environment? This is the perfect entry point for someone who's eager to learn and get hands-

Systems Engineer - Information Technology SeniorJob Title - Systems Engineer - Information Technology Senior

Lockheed Martin CorporationCompany Name - Lockheed Martin Corporation

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Orlando, Florida, USA

Full-time

Job Description WHAT WE'RE DOING Rotary and Mission Systems' Training, Logistics and Simulation (TLS) business is Lockheed Martin's center of excellence for training and logistics products and services, serving the U.S. military and more than 65 international customers around the world. Based in Orlando, TLS develops programs that teach service men and women skills to accomplish their most challenging missions - flying the world's most advanced fighter aircraft, navigating ships and driving ar

Linux Systems Administrator - Oracle Cloud CertifiedJob Title - Linux Systems Administrator - Oracle Cloud Certified

ArnAmy, Inc.Company Name - ArnAmy, Inc.

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Tallahassee, Florida, USA

Contract, Third Party

Job Purpose: Installs, configures, maintains and performs system integration testing of UNIX based operating systems, related utilities and hardware. Responsible for troubleshooting UNIX-based hardware and software problems. Monitors systems activities and fine tunes system parameters and configuration to optimize performance and ensure security of systems. Performs capacity analysis, monitors and controls usage of disk space. Develops procedures for routine administration including backup/resto