Linux / Unix Systems Administrator Jobs in Virginia

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Systems Administrator - GNOC

ManTech

Quantico, Virginia, USA

Full-time

ManTech seeks a GNOC Systems Administrator to help support our current Marine Corps Systems Command, Program Manager Intelligence & Cyber Operations Contract in Stafford, VA. Responsibilities include but are not limited to: Maintain a 24/7 presence to manage an entire domain with over 40 garrison and tactical sites.Work will be in shifts to include nights, weekends, and up to 12-hour workdays with a changing/rotating schedule.Assist in administering and maintaining Windows servers, Windows work

Systems Administrator

Apex Systems

Fort Belvoir, Virginia, USA

Full-time

Job#: 2068763 Job Description: CANDIDATES MUST HOLD AN ACTIVE TS/SCI CI POLY AND BE ABLE TO WORK SHIFT WORK TO BE CONSIDERED FOR THE ROLE Systems Administrator Location: Ft. Belvoir, VA Clearance required: TS/SCI with ability to obtain a POLY Shift: See Below $70-$90 an hr/W2 At the dawn of a new space age, Lockheed Martin is a pioneer, partner, innovator, and builder. Our amazing people are on a mission to make a difference in the world and every day we use our unique skills and experience

Senior Systems Administrator

ManTech

Chantilly, Virginia, USA

Full-time

ManTech seeks a motivated, career and customer-oriented Senior Systems Administrator to join our team in Herndon, VA. The Senior Systems Administrator will be responsible for building, maintaining, and optimizing virtualized infrastructures ensuring seamless operations across Windows server environments, networking, and enterprise platforms. Responsibilities include but are not limited to: Design, build, configure, maintain, & troubleshoot VMware virtual infrastructures to ensure high availalbi

Senior Systems Administrator

ICF

Reston, Virginia, USA

Full-time

ICF is looking for a System Administrator to work with an Agile team to deliver value quicky, confidently, inexpensively, and securely. This position requires an active Department of Defense Top Secret (or higher) security clearance. Working at ICF means applying a passion for meaningful work with intellectual rigor to help solve the leading issues of our day. Smart, compassionate, innovative, committed, ICF employees tackle unprecedented challenges to benefit people, businesses, and government

Systems Administrator

Lockheed Martin Corporation

Springfield, Virginia, USA

Full-time

Job Description Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more - we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We're creating future-ready solutio

Junior Systems Administrator

Akima, LLC

Alexandria, Virginia, USA

Full-time

Tuvli is seeking a highly motivated, self-directed individual to fill the role of a Junior Systems Administrator for our existing government client in the Alexandria, VA area. Responsibilities Deploy, manage, maintain, and support Microsoft Windows (all versions), Active Directory, local applications, servers, workstations and related technologiesRespond to monitored alerts, emails, and work orders to quickly identify trouble source and implement resolutionConduct system audits and data backups

Senior Systems Administrator

ManTech

Chantilly, Virginia, USA

Full-time

ManTech seeks a motivated, mission-oriented Senior Systems Administrator to join our team in Chantilly, VA. As the Senior Systems Administrator, you will be responsible for providing a full range of Tier 2/3 IT support services and expertise to customer activities. You will play a key role in the management, optimization, and troubleshooting of our VMware virtualized environment and Active Directory infrastructure, ensuring seamless and reliable operations for the organization. You will demon

Systems Administrator Intern - Summer 2025

CACI International, Inc.

Remote

Part-time

Systems Administrator Intern - Summer 2025 Job Category: Intern/Co-op Time Type: Part time Minimum Clearance Required to Start: TS/SCI Employee Type: Part-Time On-Call Percentage of Travel Required: Up to 10% Type of Travel: Continental US * * * The Opportunity: CACI is seeking a motivated and tech-savvy intern to join our Service Desk team on the F3I program. This internship offers a unique opportunity to gain hands-on experience in IT support and systems administration. This position w

Systems Administrator I

Thermo Fisher Scientific

Remote or Middleton, Wisconsin, USA

Full-time

Work Schedule Standard (Mon-Fri) Environmental Conditions Adherence to all Good Manufacturing Practices (GMP) Safety Standards, Some degree of PPE (Personal Protective Equipment) required (safety glasses, gowning, gloves, lab coat, ear plugs etc.) Job Description Summarized Purpose: Join Thermo Fisher Scientific Inc. as a Systems Administrator I. Work in a dynamic and innovative environment. Ensure system stability and efficient performance. Impact the success of analytical software and dedi

Senior Systems Administrator

Leidos

Lorton, Virginia, USA

Full-time

The Multi Domain Solutions Division at Leidos is looking for a Senior Systems Administrator to support a fast-paced program with the Air Force Life Cycle Management Center. This role involves supporting the delivery of comprehensive IT and support services to ensure mission success while adhering to DoD standards and regulations. The Senior Systems Administrator will ensure accounts for the enterprise solution are created and managed across multiple classification levels. Primary Responsibiliti

Systems Administrator III

Sierra Nevada Corporation

Remote or Sparks, Nevada, USA

Full-time

Do you have an eye for detail and a passion for developing innovation solutions? Join our team! As a Systems Administrator , you will be using your skills and expertise to assist in the analysis, development, and configuration of our existing software and systems that address business requirements and processes. You'll be responsible for evaluating the interface between hardware and software, operational requirements, and characteristics of our systems, establishing and documenting system parame

Senior Systems Administrator

Leidos

Lorton, Virginia, USA

Full-time

Description The Multi Domain Solutions Division at Leidos is looking for a Senior Systems Administrator to support a fast-paced program with the Air Force Life Cycle Management Center. This role involves supporting the delivery of comprehensive IT and support services to ensure mission success while adhering to DoD standards and regulations. The Senior Systems Administrator will ensure accounts for the enterprise solution are created and managed across multiple classification levels. Primary Re

Systems Analyst/Administrator

Navigant Consulting

Springfield, Virginia, USA

Full-time

Job Family: Data Science & Analysis Travel Required: None Clearance Required: Active Top Secret SCI (TS/SCI) What You Will Do: The Systems Analyst (also known as Systems Administrator or Data Analyst) will support a large IC Agency's CIO-T office with managing enterprise level data systems to include conducting analytics for insight and creating more efficient ways of accessing the data. Regular duties will include: Design, deploy, configure, secure, monitor, and manage a variety of cloud-ba

Senior Systems Administrator

ManTech

Chantilly, Virginia, USA

Full-time

ManTech seeks a motivated, mission-oriented Senior Systems Administrator to join our team in Chantilly, VA. As the Senior Systems Administrator, you will be responsible for providing a full range of Tier 2/3 IT support services and expertise to customer activities. You will play a key role in the management, optimization, and troubleshooting of our VMware virtualized environment and Active Directory infrastructure, ensuring seamless and reliable operations for the organization. You will demon

Systems Administrator

Leidos

Chantilly, Virginia, USA

Full-time

Looking for an opportunity to make an impact? At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers' 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. The Leidos National Security Sector (NSS) combines technology-enabled services and mission software capabilities in th

Systems Administrator 2

Nightwing

Remote or 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 Systems Sustainment Administrator - Day

SAIC

Suffolk, Virginia, USA

Full-time

Job ID: 2502770 Location: SUFFOLK, VA, US Date Posted: 2025-03-05 Category: Information Technology Subcategory: IT Systems Engineer Schedule: Full-time Shift: Day Job Travel: Yes, 25 % of the Time Minimum Clearance Required: Secret Clearance Level Must Be Able to Obtain: None Potential for Remote Work: No Description SAIC is looking for a Senior Systems Engineer to serve as a Senior Systems Administrator with experience in US Navy IT networks to support the sustained operation and mai

Senior Systems Sustainment Administrator - Evening

SAIC

Suffolk, Virginia, USA

Full-time

Job ID: 2502771 Location: SUFFOLK, VA, US Date Posted: 2025-03-05 Category: Information Technology Subcategory: IT Systems Engineer Schedule: Full-time Shift: Evening Job Travel: Yes, 25 % of the Time Minimum Clearance Required: Secret Clearance Level Must Be Able to Obtain: None Potential for Remote Work: No Description SAIC is looking for a Senior Systems Engineer to serve as a Senior Systems Administrator with experience in US Navy IT networks to support the sustained operation and

Systems Sustainment Administrator - Day

SAIC

Suffolk, Virginia, USA

Full-time

Job ID: 2502774 Location: SUFFOLK, VA, US Date Posted: 2025-03-05 Category: Information Technology Subcategory: IT Systems Engineer Schedule: Full-time Shift: Day Job Travel: Yes, 25 % of the Time Minimum Clearance Required: Secret Clearance Level Must Be Able to Obtain: None Potential for Remote Work: No Description SAIC is looking for a Systems Engineer to serve as a Systems Administrator with experience in US Navy IT networks to support the sustained operation and maintenance of a

Systems Sustainment Administrator - Evening

SAIC

Suffolk, Virginia, USA

Full-time

Job ID: 2502776 Location: SUFFOLK, VA, US Date Posted: 2025-03-05 Category: Information Technology Subcategory: IT Systems Engineer Schedule: Full-time Shift: Evening Job Travel: Yes, 25 % of the Time Minimum Clearance Required: Secret Clearance Level Must Be Able to Obtain: None Potential for Remote Work: No Description SAIC is looking for a Systems Engineer to serve as a Systems Administrator with experience in US Navy IT networks to support the sustained operation and maintenance o