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Fort Belvoir, Virginia

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Today

We are looking for a Systems Administrator to join our team. *This position requires an ACTIVE TOP SECRET CLEARANCE What You'll Be Doing: Administering sensitive operational and developmental networks and systems supporting mission needs. Managing Windows Active Directory environments, hypervisors, Linux and Windows virtual machines, and Apache web servers. Operating and maintaining AWS cloud instances in support of program infrastructure. Managing and securing network firewalls to protect sen

Full-time

Systems Administrator

Fort Belvoir, Virginia

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Today

Oneida Technical Solutions, LLC (OTS), was founded in 2014 and quickly established itself as a reliable partner capable of providing a variety of information technology and cyber solutions across highly complex, highly regulated and highly secure environments, including the U.S. Department of Defense (DoD), healthcare, higher education, law enforcement, retail, casino gaming and more. Our innovative cyber capabilities and programs have made us trusted partners for IT modernization projects, imp

Full-time

USD 90,000.00 - 100,000.00 per year

Systems Administrator

Lorton, Virginia

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Today

Job Title: Systems Administrator Work Location: Onsite; Lorton, VA. Alpha Omega is seeking a qualified Systems Administrator in support of our DHS ICE customer. Alpha Omega is Seeking a multi-discipline IT professional with primary responsibility for Microsoft SQL administration and Windows systems administration. The ideal candidate will manage, optimize, and troubleshoot SQL environments while also supporting automation and systems operations through advanced PowerShell scripting. Key Respo

Full-time

USD 70,000.00 - 130,000.00 per year

Systems Administrator

Falls Church, Virginia

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Today

Type of Requisition: Pipeline 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: IT Infrastructure and Operations Job Qualifications: Skills: Business Continuity, Critical Systems, Enterprise IT Certifications: None Experience: 3 + years of related experience ship Required: Yes Job Description: Advance your career while impacting our national security in cyber as Systems Administrator

Full-time

USD 111,155.00 - 150,385.00 per year

Systems Administrator (5832)

Arlington, Virginia

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Today

Old Harbor Solutions, a subsidiary of Three Saints Bay, LLC, and a Federal Government contractor industry leader, is seeking a System Administrator to join our team in Arlington, VA. Position Responsibilities: Provide information technology support, development, maintenance and technical competency in all aspects of information management;Make recommended changes based on research and developments in the field of information technology (IT);Analyze data extracted from queried reports for staff

Full-time

USD 110,000.00 - 115,000.00 per year

Linux Systems Administrator

Arlington, Virginia

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Today

BCMC is supporting a U.S. Government customer to provide support for onsite incident response to civilian Government agencies and critical asset owners who experience cyber-attacks, providing immediate investigation and resolution. Contract personnel perform investigations to characterize the severity of breaches, develop mitigation plans, and assist with the restoration of services. We are seeking a Technical Engagement Network (TEN) Lab Manager with experience in Linux, Splunk and Ansible Syst

Full-time

Systems Administrator

Washington, District of Columbia

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Today

Location: Pentagon, Arlington, VA Clearance: Active Top Secret (TS) REQUIRED Certification: DoD 8140/8570 IAT Level II or Above REQUIRED Position Overview GES is seeking a Systems Administrator to support secure system operations within a high-visibility Pentagon environment. Key Responsibilities Install, configure, and maintain servers and network systems Manage Active Directory, DNS, DHCP, and virtualization platforms Perform system monitoring, backups, and log reviews Apply patches and mai

Full-time

Systems Administrator

Washington, District of Columbia

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Today

TMB has an exciting opportunity for a Systems Administrator (IT Specialist) to provide contractor support to the Team Ship Front Office within the PAE Maritime Organization. This role supports Navy ship acquisition programs by ensuring secure, reliable, and compliant IT systems in classified and unclassified environments. The ideal candidate is an IT professional with 4-10 years of systems administration experience, looking to support mission-critical Navy programs while working closely with go

Full-time

USD 80,000.00 - 110,000.00 per year

Systems Administrator

Washington, District of Columbia

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Today

Company Overview At ValidaTek, we modernize and optimize IT services to solve some of the most critical challenges facing federal civilian and defense agencies. From customers to partners to top-talent employees, ValidaTek puts people first, empowering them to exceed expectations and transform government organizations. Our success starts and ends with our people, so we built a company where great people can do great things, with the resources and autonomy to make decisions that transform organi

Full-time

USD 100,000.00 - 120,000.00 per year

Systems Administrator

Washington, District of Columbia

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Today

Overview The Systems Administrator is responsible for day-to-day management, maintenance, and support of the organization's IT infrastructure, including servers, virtualization, and other critical systems. This role involves configuring, troubleshooting, and ensuring the reliability, security, and performance of systems and services. The Systems Administrator will collaborate with other staff and departments to deliver optimal support and contribute to ongoing IT projects. Work Location: Washi

Full-time

USD 108,000.00 - 112,000.00 per year

Systems Administrator

Washington, District of Columbia

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Today

Job Number: R0242727 Systems Administrator The Opportunity: Are you looking for an opportunity to share your experience in Zero T rus t Architectures ( ZTA ) and virtualization to safeguard our nation? As a systems security and network security engineer you can identify the tools and processes needed to assess vulnerabilities and recommend the best solution and security strategy. We need your experience to lead the development and implementation of security solutions that will protect and scale

Full-time

USD 77,600.00 - 176,000.00 per year

Cloud Systems Administrator

Arlington, Virginia

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Today

Our Partner is supporting a U.S. Government customer to provide rapid deployment and management of secure cloud-based engagement kits for cyber incident response and threat hunting operations. Working on this team means directly supporting the nation's cybersecurity defenders by ensuring they have reliable, scalable, and secure cloud infrastructure available within hours of a cyber incident-helping protect America's digital infrastructure when it matters most. Cloud Systems Administrators will m

Full-time

Cloud Systems Administrator

Arlington, Virginia

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Today

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

Full-time

Systems Administrator

McLean, Virginia

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Today

Systems Administrator Application Deadline: 25 June 2026 Department: Data Analysis and Technology Services Employment Type: Full Time Location: McLean, VA Description REQUIRED: Active TS/SCI with Full Scope Polygraph LOCATION: Full-time, onsite in McLean VA We're seeking Systems Administrators who combine strong technical troubleshooting skills with exceptional customer service. In this role, you will support users through email, hotline, and ticketing channels; answer questions about soft

Full-time

Systems Administrator

Washington, District of Columbia

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Today

Overview The System Administrator will be responsible for the installation, configuration, maintenance, and management of the Secure Internet Protocol Router Network (SIPRNet) systems and infrastructure. This role requires an individual with a strong background in network security, system administration, network component configuration and the specific protocols and security measures associated with SIPRNet. This role is 100% onsite at our corporate office in Washington, DC. We offer commuter

Full-time

Cloud Systems Administrator

Arlington, Virginia

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Today

BCMC is supporting a U.S. Government customer to provide rapid deployment and management of secure cloud-based engagement kits for cyber incident response and threat hunting operations. As part of the Engagement Support Services (ESS) contract, this program enables analysts to quickly access the tools and environments they need to investigate cyber threats affecting federal agencies, state and local governments, and critical infrastructure. Working on this team means directly supporting the nati

Full-time

Systems Administrator

Suitland-Silver Hill, Maryland

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Today

Requires ship Yes Employment Term and Type: Regular, Full Time Required Security Clearance: (Minimum for hire) TS/SCI Required Education: (Minimum for hire) Bachelor's Degree in Engineering or engineering discipline; Computer science or IT discipline; Technical discipline Salary Band: $95,000- $125,000 Job Description: FGS, LLC is seeking a motivated System Administrator to support the Office of Naval Intelligence in Suitland, Maryland. We are looking for a capable administrator with expertis

Full-time

USD 95,000.00 - 125,000.00 per year

Systems Administrator

Quantico, Virginia

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Today

Job Description Everforth ECS is seeking a Systems Administrator to work in our Quantico, VA office. Please Note: This position is contingent upon additional funding. Are you ready to play crucial role in supporting cutting-edge technology for federal law enforcement and scientific organizations? ECS is seeking a highly skilled and motivated System Administrator to provide IT services and support for hardware, IT systems, applications, and operational technologies that support mission critic

Full-time

Sr. Appian Systems Administrator

Alexandria, Virginia

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Today

Join us in transforming how technology serves those who serve. At Leidos, we're not just delivering solutions - we're pioneering the future of defense and intelligence technology. Our diverse teams of innovators unite around a singular purpose: empowering our customers to succeed in their critical missions. We believe in leading with integrity, investing in our communities, and building sustainably for tomorrow. Shape the future of digital defense. Our Digital Modernization sector is at the fore

Full-time

USD 92,300.00 - 166,850.00 per year

Systems Administrator - HCI

Springfield, Virginia

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Today

Job ID: 2611689 Location: Springfield, VA, US Date Posted: 2026-04-20 Category: Information Technology Subcategory: Sys Administrator Schedule: Full-Time Shift: Day Job Travel: Yes - 10% of the time Minimum Clearance Required: TS.SCI Clearance Level Must Be Able to Obtain: TS/SCI with Poly Potential for Remote Work: ORA_ON_SITE Description SAIC is seeking a highly motivated and skilled Systems Administrator - HCI (Hyper-Converged Infrastructure) to join our MAJESTIC Joint Program Offic

Full-time

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