Senior Systems Administrator Jobs

41 - 60 of 165 Jobs

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

General DynamicsCompany Name - General Dynamics

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Mary Esther, Florida, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: Interim Secret Clearance Level Must Be Able to Obtain: Top Secret/SCI Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Linux, System Administration, Virtual Environments, Virtualization, VMware Certifications: None Experience: 3 + years of related experience ship Required: Yes Job Description: Job Description: Seize your opportunity to make a personal impact as a Senior S

G2 Directory Services Engineer / Senior Systems Administrator | Active Top Secret clearanceJob Title - G2 Directory Services Engineer / Senior Systems Administrator | Active Top Secret clearance

General DynamicsCompany Name - General Dynamics

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Remote

Full-time

Type of Requisition: Pipeline Clearance Level Must Currently Possess: Top Secret Clearance Level Must Be Able to Obtain: Top Secret Public Trust/Other Required: None Job Family: Systems Engineering Job Qualifications: Skills: Directory Services, System Administration, Technical Support Certifications: None Experience: 8 + years of related experience ship Required: Yes Job Description: Transform technology into an opportunity as a Directory Services Engineer / Senior Systems Administrator

Senior Systems AdministratorJob Title - Senior Systems Administrator

Virginia JobsCompany Name - Virginia Jobs

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Virginia, USA

Full-time

Job Description This Senior Systems Administrator position is responsible for maintaining information technology infrastructure to support Virginia Tech sites in both Alexandria and Arlington. This position maintains systems for client support, security monitoring, and virtualization and will be called upon to modify and/or replace them as needed with input and assistance from other members of the team. Some of the technology and services in use include Windows Active Directory, Microsoft Intun

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 AdministratorJob Title - Senior Systems Administrator

Tyler Technologies, IncCompany Name - Tyler Technologies, Inc

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Overland Park, Kansas, USA

Full-time

Tyler Technologies is currently looking to hire a Cloud Engineer to work a hybrid schedule at one of several of our key locations. This job requires working closely with our development and operations teams to build automation and tools to streamline our customer migrations. Successful candidates will bring cloud expertise, scripting and IaC skills. Have the ability to think and work independently, as needed. Participate in project development and be responsible for Cloud requirements design, im

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

Senior Systems AdministratorJob Title - Senior Systems Administrator

Modern Technology SolutionsCompany Name - Modern Technology Solutions

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Beavercreek, Ohio, USA

Full-time

Overview Own Your Future. Modern Technology Solutions, Inc. (MTSI) is seeking a Senior Systems Administrator in Beavercreek, OH Why is MTSI known as a Great Place to Work? Interesting Work: Our co-workers support some of the most important and critical programs to our national defense and security. Values: Our first core value is that employees come first. We challenge our co-workers to provide the highest level of support and service, and reward them with some of the best benefits in the indu

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

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 + 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

Senior Systems AdministratorJob Title - Senior Systems Administrator

Tyler Technologies, IncCompany Name - Tyler Technologies, Inc

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Kansas, USA

Full-time

Description Tyler Technologies is currently looking to hire a Cloud Engineer to work a hybrid schedule at one of several of our key locations. This job requires working closely with our development and operations teams to build automation and tools to streamline our customer migrations. Successful candidates will bring cloud expertise, scripting and IaC skills. Have the ability to think and work independently, as needed. Participate in project development and be responsible for Cloud requiremen

Senior Systems Administrator - Operations LeadJob Title - Senior Systems Administrator - Operations Lead

Akima, LLCCompany Name - Akima, LLC

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Albuquerque, New Mexico, USA

Full-time

We are seeking an experienced Senior Systems Administrator - Server Operations Lead to support a mission-critical IT security program within a Federal Government environment. This role is responsible for leading server operations, system administration, and infrastructure management, ensuring the security, availability, and performance of IT systems. The ideal candidate will have expertise in server architecture, virtualization, Active Directory management, and IT security best practices. Additi

Senior Systems Administrator - TS/SCI with PolygraphJob Title - Senior Systems Administrator - TS/SCI with Polygraph

General DynamicsCompany Name - General Dynamics

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Fort Belvoir, Virginia, 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), Incident Resolution, System Administration Certifications: None Experience: 3 + years of related experience ship Required: Yes Job Description: General Dynamics Information Technology (GDIT) is seeking an IT E

Senior Systems Administrator - TS/SCI with PolygraphJob Title - Senior Systems Administrator - TS/SCI with Polygraph

General Dynamics Information TechnologyCompany Name - General Dynamics Information Technology

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Fort Belvoir, Virginia, 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), Incident Resolution, System Administration Certifications: None Experience: 3 + years of related experience ship Required: Yes Job Description: General Dynamics Information Technology (GDIT) is seeking an IT E

Senior Systems Engineer/AdministratorJob Title - Senior Systems Engineer/Administrator

Brilliant Infotech Inc.Company Name - Brilliant Infotech Inc.

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Fort Worth, Texas, USA

Full-time

Role: Senior Systems Engineer/Administrator Location: Fort Worth, TX (On Site) Type of Employment: Contract-to-Hire Contract Duration: 06 Months Required Experience: 10+ Years Job Description: We re hiring a Senior Systems Administrator to lead infrastructure and automation efforts in a fast-growing, cloud-forward environment. You'll manage Google Workspace, Azure AD (Entra ID), enterprise SaaS, and network systems for over 1,000 users. Key Responsibilities: Administer Google Workspace (email, D

Sr. Specialist, Systems AdministratorJob Title - Sr. Specialist, Systems Administrator

Harris CorporationCompany Name - Harris Corporation

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Melbourne, Florida, USA

Full-time

L3Harris is dedicated to recruiting and developing high-performing talent who are passionate about what they do. Our employees are unified in a shared dedication to our customers' mission and quest for professional growth. L3Harris provides an inclusive, engaging environment designed to empower employees and promote work-life success. Fundamental to our culture is an unwavering focus on values, dedication to our communities, and commitment to excellence in everything we do. L3Harris Technologie

Senior IT Systems AdministratorJob Title - Senior IT Systems Administrator

Pegasus Knowledge SolutionsCompany Name - Pegasus Knowledge Solutions

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Skokie, Illinois, USA

Contract

Our client is seeking a Senior IT Systems Administrator / Site Operations Engineer to serve as the primary technical presence supporting high-performance computing (HPC) infrastructure at Skokie location in IL facility. This individual will play a hands-on role in the setup, maintenance, and ongoing support of a new HPC environment leveraging Lenovo hardware, Infiniband networking, and Linux-based systems.The ideal candidate brings strong Linux system administration experience in enterprise or H

Sr Windows Systems AdministratorJob Title - Sr Windows Systems Administrator

RTX CorporationCompany Name - RTX Corporation

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McKinney, Texas, USA

Full-time

Date Posted: 2025-07-02 Country: United States of America Location: TX190: 2501 West University, McKinney 2501 West University , McKinney, TX, 75070 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

Sr Windows Systems AdministratorJob Title - Sr Windows Systems Administrator

RTX CorporationCompany Name - RTX Corporation

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El Segundo, California, USA

Full-time

Date Posted: 2025-07-02 Country: United States of America Location: CA222: 2006 E El Segundo Blvd BldgE04 2006 East El Segundo Boulevard Building E04, El Segundo, CA, 90245 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 calli

Sr Linux Systems AdministratorJob Title - Sr Linux Systems Administrator

RTX CorporationCompany Name - RTX Corporation

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McKinney, Texas, USA

Full-time

Sr Linux Systems AdministratorJob Title - Sr Linux Systems Administrator

RTX CorporationCompany Name - RTX Corporation

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El Segundo, California, USA

Full-time

Senior Infrastructure Systems AdministratorJob Title - Senior Infrastructure Systems Administrator

Genius Road, LLCCompany Name - Genius Road, LLC

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Dallas, Texas, USA

Contract

Senior Infrastructure Systems Administrator Contract Length: 12 months + potential extension Location: Dallas, Texas Hybrid (3 days onsite downtown Dallas and related sites within DFW) **Applicants must already be local to the Dallas area** We re looking for a seasoned Senior Infrastructure Systems Administrator to join our client s dynamic Control Systems team. This hybrid role supports critical infrastructure that enables 24/7 utility operations. The ideal candidate should have at least 8+ y