Senior Systems Administrator Jobs

1 - 20 of 182 Jobs

Senior Systems Administrator (Linux/Windows)Job Title - Senior Systems Administrator (Linux/Windows)

Ledgent TechnologyCompany Name - Ledgent Technology

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Fremont, California, USA

Full-time

We are seeking a highly skilled Senior System Administrator to join our client's enterprise IT team, which is onsite in Fremont, CA. We are unable to consider 3rd party candidates. In this role, you will be responsible for maintaining, securing, and optimizing mission-critical systems and infrastructure across a complex, multi-site environment. You will take initiatives to improve performance, reliability, scalability, and security, including cloud services, servers, storage, virtualization, s

Senior Systems AdministratorJob Title - Senior Systems Administrator

Iridium Satellite LLCCompany Name - Iridium Satellite LLC

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Redstone Arsenal, Alabama, USA

Full-time

Company Overview Iridium is an award-winning and innovative satellite communications company with bragging rights to the only network that offers voice and data connectivity anywhere in the world. For over 20 years, Iridium's unique network and services have supported critical communications needs for individuals, businesses, and the evolving Internet of Things. At Iridium, we understand the importance of staying connected and the limitations of traditional communications networks. People acros

Senior Systems AdministratorJob Title - Senior Systems Administrator

Iridium Satellite LLCCompany Name - Iridium Satellite LLC

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Grand Forks Air Force Base, North Dakota, USA

Full-time

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

Sr Systems AdministratorJob Title - Sr Systems Administrator

TEKsystems c/o Allegis GroupCompany Name - TEKsystems c/o Allegis Group

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Tallahassee, Florida, USA

Full-time

Description A TEKsystems client is seeking a Sr Systems Administrator to work on site in the Ellabel, GA area. This person provides technical leadership and is responsible for establishing the direction for maintenance, standards, life-cycle management, design, and implementation approaches for the company's servers and related infrastructure. Creates, evaluates, and implements plans and design proposals for high-impact IT solutions and their use involving leading-edge technologies and methods,

Sr Systems AdministratorJob Title - Sr Systems Administrator

TEKsystems c/o Allegis GroupCompany Name - TEKsystems c/o Allegis Group

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Tallahassee, Florida, USA

Full-time

Description Provides technical leadership and is responsible for establishing the direction for maintenance, standards, life-cycle management, design, and implementation approaches for the company's servers and related infrastructure. Creates, evaluates, and implements plans and design proposals for high-impact IT solutions and their use involving leading-edge technologies and methods, considering key factors such as their long-term effectiveness (service delivery and cost), practicality, techni

Sr. Systems AdministratorJob Title - Sr. Systems Administrator

Arena Technical ResourcesCompany Name - Arena Technical Resources

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Redstone Arsenal, Alabama, USA

Full-time

Job DescriptionJob Title: Sr Systems Administrator Job Location: Redstone Arsenal, Alabama Eligibility/Clearance: Secret Clearance is required. This position supports a government contract Job Description: We are seeking a Systems Administrator that will work within a cohesive team environment and is responsible for the effective provisioning, installation/configuration, operation, and maintenance of systems hardware and software and related infrastructure. This role is critical for ensuring

Senior Systems AdministratorJob Title - Senior Systems Administrator

Booz Allen HamiltonCompany Name - Booz Allen Hamilton

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Washington, District of Columbia, USA

Full-time

Job Number: R0221565 Systems Administrator, Senior 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 Department of Defense ( DoD ) ? We're looking for a senior systems administrator who spe cia lizes in networking and working within classified environments supporting agencies with a solid background in windows operating systems to help u

Senior Systems AdministratorJob Title - Senior Systems Administrator

Booz Allen HamiltonCompany Name - Booz Allen Hamilton

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Arlington, Virginia, USA

Full-time

Job Number: R0221552 Systems Administrator, Senior The Opportunity: Your combination of people skills and te chn ical expertise makes you the team hero, solving one problem after another. What if you could use those skills to improve the te chn ology supporting the Department of Defense ( DoD ) ? We're looking for a senior systems administrator who spe cia lizes in networking and working within classified environments supporting agencies with a solid background in windows operating systems to he

Senior Systems Administrator-Web SystemsJob Title - Senior Systems Administrator-Web Systems

Penske Truck LeasingCompany Name - Penske Truck Leasing

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Reading, Pennsylvania, USA

Full-time

You may know Penske for our big yellow trucks. But did you know we're an industry-leading technology innovation company? At Penske we have a 50-year history of leading the transportation and supply-chain industry, delivering world-class and award-winning technology solutions. And, it starts with our associates. No matter what your skills or technology stack, our IT team is for you. You'll work and grow alongside great people and on really cool projects. We inspire our IT experts to push the boun

Senior Systems AdministratorJob Title - Senior Systems Administrator

IO AssociatesCompany Name - IO Associates

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South Pasadena, Florida, USA

Full-time

Senior Systems Administrator - MacDill AFB (Tampa, FL) Join a fast-growing consulting firm delivering mission-critical IT infrastructure for the Department of Defense. Our client is seeking a Senior Systems Administrator to support operations at MacDill AFB. Requirements: Active Top Secret clearance (TS/SCI eligible) DoD 8570 certification (Security+ or equivalent) 4+ years of systems administration experience Proficient with Windows Server, Linux, virtualization, and cloud platforms (AWS,

Senior Systems AdministratorJob Title - Senior Systems Administrator

Booz Allen HamiltonCompany Name - Booz Allen Hamilton

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Huntsville, Alabama, USA

Full-time

Job Number: R0220402 Systems Administrator, Senior 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 law enforcement agencies? We're looking for a systems administrator who spe cia lizes in Windows to help us build solutions to help fight crime. As a systems administrator on our project, you'll ensure the current infrastructure is functiona

Senior Systems AdministratorJob Title - Senior Systems Administrator

Diligente TechnologiesCompany Name - Diligente Technologies

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Milpitas, California, USA

Contract

Job Title: Senior Systems AdministratorLocation: Milpitas, CA (100% Onsite)Duration: 6-Month Contract Job Summary:We are seeking a skilled Senior Systems Administrator to support and maintain Windows servers, virtualization platforms, and storage systems for Engineering and Corporate IT environments.The ideal candidate will provide L3/L4 support, manage system infrastructure in Engineering Labs, and perform hardware/software troubleshooting and recovery. This role demands strong expertise in Win

Sr. Systems AdministratorJob Title - Sr. Systems Administrator

Robert HalfCompany Name - Robert Half

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Asheville, North Carolina, USA

Contract

Description We are looking for an experienced Sr. Systems Administrator to join our team in Asheville, North Carolina. This is a long-term contract position that offers the opportunity to work with cutting-edge technologies and contribute to the stability and security of our IT infrastructure. The ideal candidate will have expertise in cloud-based systems, endpoint management, and automation tools. Responsibilities: Oversee and manage cloud technologies, including private endpoint setups and in

Sr. Systems AdministratorJob Title - Sr. Systems Administrator

MSITEK LLCCompany Name - MSITEK LLC

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Herndon, Virginia, USA

Contract

- 5+ years of experience in an IT enterprise System Admin role or Cloud Admin position - 4+ years with PowerShell scripting for automation, extremely fluent in PowerShell and command lines - Experience with Windows firewalls - Expert level Microsoft Azure Administrator - Expert level Windows admin skills (Active Directory, DNS, Group Policy) - Security Clearance or ability to get a Clearance Nice to Have Skills and Experience -Bachelors in Computer Science - Professional industry certifications

Senior Systems AdministratorJob Title - Senior Systems Administrator

Apex SystemsCompany Name - Apex Systems

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Herndon, Virginia, USA

Full-time

Job#: 2077484 Job Description: Apex Systems is seeking a Senior Systems Administrator to work fully onsite in Herndon, VA. For immediate consideration, please email your updated resume to Maren at with "Senior Systems Administrator Herndon, VA" in the subject line. #Clearance required: Active Full Scope Polygraph Summary: We are seeking a Senior Systems Administrator to join a Specialized Infrastructure Operations team within the Information Technology & Data Analytics (IT&DA) organization i

Senior Systems AdministratorJob Title - Senior Systems Administrator

Decisionpoint CorporationCompany Name - Decisionpoint Corporation

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Elizabeth City, North Carolina, USA

Full-time

Overview DecisionPoint Corporation is seeking a Senior Systems Administrator to join our team on an upcoming contract to support the Unites States Coast Guard USCG) Aviation Logistics Center (ALC) Information Systems Division (ISD) in Elizabeth City, North Carolina. The USCG ALC ISD provides development, security, and operations (DevSecOps) IT support for products and services for the Coast Guard Information Officer (CIO), Commandant, and Coast Guard Cyber Command through a geo-dispersed workfor

Sr. Systems AdministratorJob Title - Sr. Systems Administrator

SAICCompany Name - SAIC

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Chantilly, Virginia, USA

Full-time

Job ID: 2505807 Location: CHANTILLY, VA, US Date Posted: 2025-05-17 Category: Information Technology Subcategory: Sys Administrator Schedule: Full-time Shift: Day Job Travel: No Minimum Clearance Required: TS/SCI with Poly Clearance Level Must Be Able to Obtain: None Potential for Remote Work: No Description SAIC is seeking a highly motivated Systems Administrator to join our team of professionals providing technical and program services to the U.S. Government (USG) . SAIC provides re

Senior Systems Administrator (Australia) - TS/SCI with PolygraphJob Title - Senior Systems Administrator (Australia) - TS/SCI with Polygraph

General Dynamics Information TechnologyCompany Name - General Dynamics Information Technology

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Independence, Kansas, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Active Directory (AD), Linux, Microsoft Windows, Operating Systems (OS) Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: General Dynamics Information Technology (GDIT) is seeking a

Senior Systems Administrator (Australia) - TS/SCI with PolygraphJob Title - Senior Systems Administrator (Australia) - TS/SCI with Polygraph

General Dynamics Information TechnologyCompany Name - General Dynamics Information Technology

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Independence, Kansas, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Linux, System Administration, Windows Applications Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: General Dynamics Information Technology (GDIT) is seeking an IT Engineer with Mi