Principal Windows Systems Administrator Jobs

101 - 120 of 1,743 Jobs

Server Administrator (Systems Specialist)Job Title - Server Administrator (Systems Specialist)

HAYSCompany Name - HAYS

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Florida, USA

Contract

Server Administrator (Systems Specialist) - Contract - Clearwater, FL - $45.00 - $50.00/hr The final salary or hourly wage, as applicable, paid to each candidate/applicant for this position is ultimately dependent on a variety of factors, including, but not limited to, the candidate's/applicant's qualifications, skills, and level of experience as well as the geographical location of the position. Applicants must be legally authorized to work in the United States. Sponsorship not available. Ou

DevOps Engineer/Systems AdministratorJob Title - DevOps Engineer/Systems Administrator

SNI TechnologyCompany Name - SNI Technology

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Centennial, Colorado, USA

Contract

Job Details SNI Technology's client is actively seeking to hire an IT DevOps Engineer for an exciting 3-month, contract-to-hire opportunity located in Centennial, CO! Please note this is a hybrid work environment requiring 3 days onsite per week (2 days remote/work from home). Summary We are seeking a mid-level IT professional for a hybrid role combining responsibilities in Systems Administration and Data Warehouse/Python development. This position supports core IT infrastructure, including Li

IT Systems Administrator- Secret Required- Onsite in Orlando, FLJob Title - IT Systems Administrator- Secret Required- Onsite in Orlando, FL

Lockheed Martin CorporationCompany Name - Lockheed Martin Corporation

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Orlando, Florida, USA

Full-time

Job Description Are you ready to invent the future? Lockheed Martin is on a journey of digital transformation as we leverage our data, modernize our processes and advance technology to maintain our position as the world's Aerospace and Defense leader. We are leveraging emerging, digitally-enabled capabilities to lower cost, speed up development time and create disruptive solutions to best serve our customers and stakeholders. We're bringing the 4th Industrial Revolution to every role in the com

Systems Administrator Expert - Backup and ConfigurationJob Title - Systems Administrator Expert - Backup and Configuration

General DynamicsCompany Name - General Dynamics

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Washington, District of Columbia, USA

Full-time

Type of Requisition: Regular Clearance Level Must Currently Possess: None Clearance Level Must Be Able to Obtain: None Public Trust/Other Required: None Job Family: Systems Administration Job Qualifications: Skills: Backup and Recovery (Software), Computer Backups, Information Technology (IT) Systems Certifications: None Experience: 15 + years of related experience ship Required: Yes Job Description: Systems Administrator Expert - Backup and Configuration Transform technology into oppor

Systems AdministratorJob Title - Systems Administrator

Robert HalfCompany Name - Robert Half

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Franklin, Wisconsin, USA

Full-time

Description We are looking for a Senior Systems Administrator to join our team in Franklin, Wisconsin. This Contract-to-Permanent position offers an exciting opportunity to manage and optimize IT infrastructure, including both cloud and on-premises systems. The ideal candidate will bring extensive expertise in enterprise environments, a strong focus on automation, and a commitment to ensuring security and scalability. Responsibilities: Design, implement, and maintain IT infrastructure, includin

Systems AdministratorJob Title - Systems Administrator

General DynamicsCompany Name - General Dynamics

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Bluemont, 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: EMC Storage Area Network (SAN) Administration (Inactive), Unix System Administration, Windows System Administration Certifications: None Experience: 5 + years of related experience ship Required: Yes Job Description: Transform technology into o

Platform Systems Engineer/Architect, Associate PrincipalJob Title - Platform Systems Engineer/Architect, Associate Principal

American Systems CorporationCompany Name - American Systems Corporation

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Arlington, Virginia, 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. THIS POSITION INCLUDES A $5,000 SIGN-ON BONUS! Responsibilities As an Associate Principal Platform Systems Engineer/Architect, you will: Design, develop, and maintain scalable, secure computing platforms across cloud and on-pre

Systems AdministratorJob Title - Systems Administrator

American Systems CorporationCompany Name - American Systems Corporation

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Chantilly, Virginia, 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.This position is on site, Monday - Friday from 11am to 7pm, at a medical system testing facility in Chantilly VA. Responsibilities Support engineering solutions and provide hands-on customer support Engage face to face and virtual

Systems AdministratorJob Title - Systems Administrator

General Dynamics Information TechnologyCompany Name - General Dynamics Information Technology

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Bluemont, Virginia, USA

Full-time

Network & Systems AdministratorJob Title - Network & Systems Administrator

SNI TechnologyCompany Name - SNI Technology

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Colorado Springs, Colorado, USA

Contract

Job Details SNI Technology's top client located in Colorado Springs, CO is seeking to hire a talented IT Network & Systems Administrator for an exciting contract-to-hire opportunity! Please note this is a full-time, 40-hour-per-week position with a hybrid work environment (i.e., 1 week onsite, 1 week remote rotating schedule) working out of their Colorado Springs office location. NO C2C or recruiters please. The Network & Systems Administrator is a key member of the project team who implements

Systems AdministratorJob Title - Systems Administrator

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

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Aurora, Colorado, USA

Full-time

**Requires a Security Clearance (Please do not apply if you don't have a clearance.)** Top Skills' Details 1. 5+ years of experience with Red Hat Enterprise Linux (RHEL) server administration in an SCI classified environment 2. VMware and ESXi (6.x or higher) configuration and management experience 3. Group Policies (GPOs) experience; Active Directory management experience 4. Active Security Clearance: TS with SCI and full scope Poly 5. Must have a DOD 8570 IAT Level 2 baseline certification (ex

Systems AdministratorJob Title - Systems Administrator

Credence Management SolutionsCompany Name - Credence Management Solutions

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McLean, Virginia, USA

Full-time

Overview Credence is one of the largest privately held technologies services company in the country, repeatedly recognized as a top place to work, and have been on the Inc. 5000 Fastest Growing Private Companies list for the last 12 years. We practice servant leadership and believe that by focusing on the success of our clients, team members, and partners, we all achieve greater success. At Credence, we support our clients' mission-critical needs, powered by technology. We provide cutting-edge s

Senior Systems AdministratorJob Title - Senior Systems Administrator

Robert HalfCompany Name - Robert Half

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Des Moines, Iowa, USA

Full-time

Description Location: Hybrid position (remote with limited on-site work as needed - must reside in Iowa). Salary: $115,000 - $125,000 We are seeking a Senior Systems Administrator to join our premier client's dynamic IT team! This critical role involves providing advanced support for on-premises and cloud-based solutions, ensuring systems operate securely, reliably, and efficiently. As the Senior Systems Administrator you'll play a key role in managing infrastructure, monitoring performance, a

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

General DynamicsCompany Name - General Dynamics

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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 AdministratorJob Title - Systems Administrator

LeidosCompany Name - Leidos

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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

IT Systems AdministratorJob Title - IT Systems Administrator

Postman, Inc.Company Name - Postman, Inc.

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Boston, Massachusetts, USA

Full-time

Who Are We? Postman is the world's leading API platform, used by more than 40 million developers and 500,000 organizations, including 98% of the Fortune 500. Postman is helping developers and professionals across the globe build the API-first world by simplifying each step of the API lifecycle and streamlining collaboration-enabling users to create better APIs, faster. The company is headquartered in San Francisco and has an office in Bangalore, where it was founded. Postman is privately held,

Linux Systems Administrator (Onsite) (DoD Secret Clearance)Job Title - Linux Systems Administrator (Onsite) (DoD Secret Clearance)

RTX CorporationCompany Name - RTX Corporation

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Cedar Rapids, Iowa, USA

Full-time

Date Posted: 2025-07-07 Country: United States of America Location: RIA32: Cedar Rapids, IA 400 Collins Road NE , Cedar Rapids, IA, 52498-0505 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 We have an immediate career growth opportunity with our DT - Information Workplace Services team for a talented Linux Sy

Systems Administrator IVJob Title - Systems Administrator IV

Robert HalfCompany Name - Robert Half

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Washington, District of Columbia, USA

Contract

Description We are looking for an experienced Systems Administrator IV to join our team in Washington, District of Columbia. In this long-term contract position, you will manage and optimize complex IT systems and infrastructures, ensuring their efficient operation and compliance with industry standards. This role offers an exciting opportunity to apply advanced technical knowledge to solve challenging issues and contribute to the success of large-scale projects. Responsibilities: Oversee the i

NAVAIR Systems AdministratorJob Title - NAVAIR Systems Administrator

American Systems CorporationCompany Name - American Systems Corporation

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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

Systems AdministratorJob Title - Systems Administrator

General DynamicsCompany Name - General Dynamics

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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