Senior IT Systems Administrator Jobs

121 - 140 of 5,819 Jobs

Automation Systems Administrator (VMSA-7)Job Title - Automation Systems Administrator (VMSA-7)

General DynamicsCompany Name - General Dynamics

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Sierra Vista, Arizona, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Secret Clearance Level Must Be Able to Obtain: Secret Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Automation, Backup and Recovery (Software), Business Continuity, Information Technology (IT) Systems, Virtualization Certifications: None Experience: 3 + years of related experience ship Required: Yes Job Description: As an Automation Systems Administrator you will help en

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

Monitoring and Performance Administrator, IT InfrastructureJob Title - Monitoring and Performance Administrator, IT Infrastructure

tax.comCompany Name - tax.com

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Remote or Manila, Metro Manila, Philippines

Full-time

Why Ryan? Flexible Work EnvironmentAward-Winning CultureWorld-Class Benefits and CompensationAccelerated Career PathCommunity OutreachMentorship OpportunitiesWellness-Centric Benefits At Ryan, we pride ourselves on maintaining a robust and efficient IT infrastructure that supports our dynamic business operations. We are seeking a dedicated Monitoring and Performance Administrator to join our team and ensure the optimal performance and reliability of our systems and networks. The Monitoring and

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

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

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

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 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

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

Sr. Systems Administrator/Task Lead/ManagerJob Title - Sr. Systems Administrator/Task Lead/Manager

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: Information Technology (IT) Systems, Mentorship, People Management Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: GDIT has an immediate opening for a Senior Systems Administrator/Task Lead/Manager to fi

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

Systems Administrator - MaximoJob Title - Systems Administrator - Maximo

Robert HalfCompany Name - Robert Half

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Detroit, Michigan, USA

Full-time

Description We are looking for an experienced Systems Administrator to manage and optimize our Maximo Enterprise Asset Management platform. This role is essential in ensuring the system operates efficiently, supports organizational goals, and evolves to meet changing business needs. You will collaborate with various teams to implement solutions, maintain system integrity, and drive continuous improvements. Responsibilities: Coordinate with external vendors to plan, test, and apply system patche

Systems AdministratorJob Title - Systems Administrator

Rose InternationalCompany Name - Rose International

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Las Vegas, Nevada, USA

Full-time

Date Posted: 07/22/2025 Hiring Organization: Rose International Position Number: 485899 Industry: Government/Staffing Job Title: Systems Administrator Job Location: Las Vegas, NV, USA, 89102 Work Model: Onsite Shift: Normal Business hours Employment Type: Temp to Hire FT/PT: Full-Time Estimated Duration (In months): 13 Min Hourly Rate($): 37.00 Max Hourly Rate($): 39.00 Must Have Skills/Attributes: CMS, Problem Management, Procurement, SQL Server Experience Desired: Familiarity with CMS

Exchange Systems Administrator SMEJob Title - Exchange Systems Administrator SME

LeidosCompany Name - Leidos

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Alexandria, Virginia, USA

Full-time

Description Unleash Your Potential At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customer's success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business. If this sounds like an environment where you can thrive, keep readin

Sr. ERP and CRM Systems AdministratorJob Title - Sr. ERP and CRM Systems Administrator

EclaroCompany Name - Eclaro

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Remote

Contract

ECLARO is a company that delivers talent. We provide fully customizable, comprehensive talent acquisition and management of seasoned professionals through a number of business models, including: Consulting, Professional Hire, Global Integrated Delivery and Managed Services. Kindly email with a Word resume along with the position ID number, your hourly rate and availability. This is Homer Ballega. I am a Recruiter with ECLARO. We are first tier suppliers of technical services to several Fortune 5

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

Systems Administrator 2Job Title - Systems Administrator 2

Realm OneCompany Name - Realm One

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Annapolis, Maryland, USA

Full-time

We're searching for talented individuals who provide intelligence, engineering, and mission management expertise for the Government. 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 System Administrator 2 to provide support for implementation, troubleshooting and maintenance of Inf

Systems Administrator - SeniorJob Title - Systems Administrator - Senior

Modern Technology SolutionsCompany Name - Modern Technology Solutions

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Patterson, Ohio, USA

Full-time

Overview Own Your Future. Modern Technology Solutions, Inc. (MTSI) is seeking a Systems Administrator - Senior in Dayton, OH. As a System Administrator with MTSI, you will support a customer operating out of Wright-Patterson AFB in Dayton, OH. The Senior System Administrator serves as the Program Office's information technology and is responsible for supporting, designing, maintaining, and monitoring internal and external networks as well as implementing and managing all systems, applications,

Direct Client: Systems Administrator (Cloud & Infrastructure) (Hybrid work)Job Title - Direct Client: Systems Administrator (Cloud & Infrastructure) (Hybrid work)

COOLSOFTCompany Name - COOLSOFT

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Tallahassee, Florida, USA

Full-time

Now Hiring: Systems Administrator (Cloud & Infrastructure) Location: Remote or Onsite in Florida (based on project needs) Education: Bachelor s in Computer Science, Information Systems, or related field or equivalent professional experience About the RoleWe're looking for an experienced Systems Administrator to support and manage both on-premise and cloud-based infrastructure. This role involves Windows Server administration, cloud platform management (Azure, AWS, Google Cloud Platform), and mi