579 system administrator jobs found

Description SAIC is seeking a skilled and motivated System Administrator to join our team onsite in Colorado Springs and will play a key role in managing and advancing our IT infrastructure within a Department of Defense (DoD) environment. In this role, you will be responsible for maintaining robust, secure, and high-performing systems that support mission-critical operations. The ideal candidate brings hands-on experience with enterprise virtualization platforms (Nutanix, VMware, and/or Proxmox), Windows Server administration, and a working knowledge of DoD security compliance standards. You are someone who takes ownership, communicates clearly across teams, and thrives in a regulated, security-first environment. Responsibilities: Install, configure, and maintain Windows Server environments, including Active Directory, Group Policy, and user permissions management. Manage and optimize on-premises Type 1 hypervisor platforms (Nutanix, VMware, Proxmox) to ensure high...

Description SAIC is currently seeking a motivated and experienced System Administrator to join our team at the Pentagon in Arlington, VA. Shift Schedule: Monday-Friday, 6:00 AM to 6:00 PM core hours with occasional after - hours onsite work to support a NIPR and SIPR environment. Responsibilities: Manage currently supported and subsequent Windows Server Operating Systems on virtual operating environments, providing technical oversight and consultation services. Perform complex system administration and security engineering efforts, STIG remediation, advanced GPO implementation and system upgrades. Research and resolve performance, capacity, and other server - related issues. Provide mentorship and guidance to junior systems administrators and other IT staff. Improve efficiencies by documenting and standardizing support processes while capturing and developing best practices. Provide support for the escalation and communication of statuses to leadership to include the...

Description SAIC is seeking a C2SET/Kubernetes/LINUX System Administrator to support our Collaborative Operations for Battlespace Architecture (COBRA) program out of Osan Air Base (Pyeongtaek, Korea). All Qualified candidates MUST possess IAT LvII (ie. Sec+) Certification and an active Secret clearance. Job Duties/Responsibilities: The contractor shall perform the full range of Kubernetes system administration & LINUX system administration to include: Kubernetes system administration. This includes the ability to install, configurate & troubleshoot. LINUX server operation system administration. This includes the ability to install, configurate & troubleshoot. C2SET is specialized Modelling & Simulation (M&S) software that you will be responsible for learning how to install, configure, operate & troubleshoot. C2SET is Kubernetes based M&S software, you will be responsible for the following: Interacting with users and other M&S software...

Description Team SAIC is currently seeking a motivated and experienced Infrastructure System Administrator to join our team at the Pentagon in Arlington, VA. The candidate will be responsible for designing, building, operating, and sustaining highly available server environments. The position oversees InfoScale cluster deployments, failover and recovery capabilities, and enterprise server administration. Responsibilities: Prioritize the work of infrastructure engineers supporting high-availability, server, and lab environments. Plan, build, configure, and maintain InfoScale clusters supporting key strategic partners in the NCR. Develop, execute, document, and improve failover, failback, disaster-recovery, and continuity procedures. Manage physical and virtual servers, including operating-system administration, patching, performance monitoring, capacity planning, and lifecycle replacement. Operate and maintain a test lab that mirrors relevant production configurations...

Position Summary Odyssey Systems has an exciting opportunity for a Senior Network Engineer / System Administrator supporting the 782nd Test Squadron on TMASIII at Eglin AFB, FL.   As the System Administrator, you will serve as the principal technical authority for information systems operations, cybersecurity, and information assurance within classified, mission‑critical environments. You will lead implementation of security controls, oversee compliance activities, direct vulnerability management efforts, and support the evolution of automation hardware and software infrastructure.   This is a full‑time position located at Eglin Air Force Base, Florida. Responsibilities Duties include, but not limited to:  Serve as the principal technical authority for information systems operations, cybersecurity, and information assurance. Lead the design, implementation, and continuous improvement of security controls for...

Description SAIC is seeking a skilled and motivated System Administrator in Colorado Springs, CO to join our team and play a key role in managing and advancing our IT infrastructure within a Department of Defense (DoD) environment. In this role, you will be responsible for maintaining robust, secure, and high-performing systems that support mission-critical operations. The ideal candidate brings hands-on experience with enterprise virtualization platforms (Nutanix, VMware, and/or Proxmox), Windows Server administration, and a working knowledge of DoD security compliance standards. You are someone who takes ownership, communicates clearly across teams, and thrives in a regulated, security-first environment. Responsibilities: Install, configure, and maintain Windows Server environments, including Active Directory, Group Policy, and user permissions management. Manage and optimize on-premises Type 1 hypervisor platforms (Nutanix, VMware, Proxmox) to ensure high availability...

Overview LMI is seeking an experienced Appian System Administrator to support Army CPE, ES2, AT&R in the sustainment and enhancement of the Army Contract Writing System (ACWS). ACWS is built on the Appian Platform. The Appian System Administrator will support platform configuration, environment operations, application deployments, access administration, monitoring, troubleshooting, and system reliability across ACWS environments.   LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed. Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed.    Leveraging our mission-ready technology and solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration, LMI serves the...

Description SAIC is seeking a highly experienced System Administrator Expeditionary Systems (OpAI) to contribute to the integration of AI capabilities into expeditionary systems, including sensor kits, UxS, C2, and TAK. The successful candidate will play a key role in maintaining the capabilities of expeditionary systems running innovative and cutting-edge technologies. Daily tasks can vary from hands on keyboard to technical discussions, including but not limited to, troubleshooting network connectivity issues, updating software on edge servers, applying Operating System updates to Linux systems, testing machine learning capabilities, and managing delivery of hardware and software to operational forces. THIS IS AN ONSITE ROLE IN SAN DIEGO, CA. WITH UP TO 15% OF TRAVEL INVOLVED JOB DUTIES: Collaborate with cross-functional teams to understand and address the Navy's operational challenges integrating artificial intelligence into expeditionary systems Build and maintain...

Description Description: SAIC has an immediate opening in Virginia Beach, VA (Dam Neck Naval Base) for a Cryptologic Information Technology System Administrator position that performs system administration and maintenance on cryptologic systems used in a training environment. This full-time position is located in Virginia Beach and includes support to other training locations. Support to other sites will be primarily virtual (distance support) but may include travel to Jacksonville FL, Pensacola FL, Everett WA, Pearl Harbor HI, and Yokosuka Japan. Travel is anticipated to be less than 10%. To ensure the systems and training equipment are available for training sites' scheduled courses and other training staff needs, the system administrator may be required to respond to trouble calls outside of normal working hours, although this is not common and is typically scheduled in advance. Job Duties: The Cryptologic IT System Administrator will maintain and perform system...

Basic Qualifications Master's degree. Bachelor's degree in a specialized area or equivalent relevant experience is required; plus, a minimum of 2 years of relevant experience.   CLEARANCE REQUIREMENTS: Current or active Department of Defense Top Secret clearance with SCI eligibility required with ability to obtain a Polygraph is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required.   Responsibilities for this Position   Join the dynamic SPRINT Next Team as a Linux Systems Administrator - Service Desk specializing in Red Hat and PitBull technologies. PitBull is a highly secure operating system designed for environments that require strict security controls and data protection....

Basic Qualifications Master's degree, plus 3 years of relevant experience. Bachelor's degree in a specialized area or equivalent relevant experience is required; plus, a minimum of 5 years of relevant experience.   CLEARANCE REQUIREMENTS: Current or active Department of Defense Top Secret clearance with SCI eligibility required with ability to obtain a Polygraph is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required . Responsibilities for this Position J oin the dynamic SPRINT Next Team as a Linux Systems Administrator specializing in Red Hat and PitBull technologies with an emphasis on web servers, databases, and cloud-based infrastructure knowledge. What You'll Experience Hands-on...

Basic Qualifications Education Requirements: Bachelor's degree in Computer Science, a related field or equivalent combination of education and relevant work experience is required plus a minimum of 8 years of relevant experience; or Master's degree plus 6 years of relevant experience.   Clearance Requirements: Department of Defense Secret security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required.     Responsibilities for this Position Put your engineering talent to the ultimate test. At General Dynamics Mission Systems, we create the technologies, products and services that help our service members, intelligence analysts and first responders keep our nation safe. The work we do is...

Description: WHAT WE'RE DOING Lockheed Martin, Rotary Mission Systems Cyber & Intelligence invites you to step up to one of today’s most daunting challenges: the use of advanced electronics to undermine our way of life. As a cyber security professional at Lockheed Martin, you’ll protect the networks that our citizens and the world depend upon each minute: Financial assets. Healthcare information. Critical infrastructure. Hazardous materials. The uninterrupted flow of energy that keeps modern life moving. Here, you’ll work with cybersecurity experts on the forefront of threat protection and proactive prevention. In this fast-paced, real-world environment, you’ll draw on all your education and experience as well as the resources of Lockheed Martin to keep the threats at bay. THE WORK In this role you will: • Serve as the senior system administrator with extensive experience supporting Windows‑based desktops, laptops, and virtual server environments. • Manage and maintain...

Basic Qualifications Bachelor’s degree in a related specialized area or equivalent is required plus a minimum of 5 years of relevant experience; or Master's degree plus a minimum of 3 years of relevant experience. CLEARANCE REQUIREMENTS: Department of Defense TS/SCI security clearance with Polygraph is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position At General Dynamics Mission Systems, we create the technologies, products and services that help our nation’s heroes keep our nation safe. The work we do is so advanced, we are continuously moving the boundaries of what’s possible. Here you’ll work with the best and your talent will be front and center on projects that...

Basic Qualifications Education Requirements: Bachelor’s degree in Computer Science, a related field or equivalent experience is required plus a minimum of 8 years of relevant experience; or Master's degree plus 6 years of relevant experience. Clearance Requirements: Department of Defense TS/SCI with Polygraph security clearance is required at time of hire. Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Put your engineering talent to the ultimate test. At General Dynamics Mission Systems, we create the technologies, products and services that help our service members, intelligence analysts and first responders keep our nation safe. The work we do is so advanced our teams often redefine what’s...

Description SAIC is currently seeking an experienced Enterprise Computing Applications Monitoring Support (ECAMS) Watch Officer with an Active TS/SCI in support of 24/7/365 operations to join our team at the Pentagon in Arlington, VA. Shift Schedule for this role: 7 p.m.-7 a.m. Thursday - Saturday and every other Wednesday Responsibilities: Provide active onsite operations, monitoring, and troubleshooting of IT systems and subsystems via various tools to support enterprise services to worldwide customer base. Through the use of various IT tools members are expected to identify performance issue, isolate fault(s), correct fault(s), and escalate when necessary within Service Level Agreements. Must be detail oriented and document all worked performed via appropriate ticketing/tracking system Collaborate closely with customers, other teams, and management to resolve incident(s) via verbal and written communications while providing regular updates until...

Description SAIC is seeking a Senior Service Validation and Testing (SVAT) Administrator in Colorado Springs, CO. The Senior Service Validation and Testing (SVAT) Administrator acts as the gatekeeper for IT quality assurance, ensuring that all proposed changes, updates, and new systems meet stringent operational and security standards before entering the production environment. Rooted in ITIL service management principles, this role manages the Test and Integration Laboratory (TIL) and leads the evaluation of system hardening, performance metrics, and configuration compatibility. The incumbent bridges the gap between engineering and operations, guaranteeing that new deployments do not introduce vulnerabilities or instability into the enterprise IT infrastructure. Principal Duties and Responsibilities Service Validation & Testing Lifecycle. Designs, executes, and oversees comprehensive test plans for software patches, system upgrades, and new technology...

Description: Our employees are the core of everything we do, and they are helping the future arrive. As a leading technology innovation company, our team of over 100,000 employees work with our partners around the world to bring the latest technology to our customers’ toughest challenges. Headquartered in Bethesda, MD, Lockheed Martin has employees based in all 50 states and more than 570 facilities that span 70 countries. This Enterprise Operations (EO) position supports the Lockheed Martin Space division located in Denver, CO. The selected candidate will be responsible for providing support to the critical programs under the responsibility of the Space Division. This IT professional will ensure that the Lockheed Martin IT systems are managed, controlled, and compliant with the Corporate Information Protection Manuals (CIPM). This includes upgrades, operations and maintenance, hardware and software installations, and service requests (servers, workstations, containers,...

Description SAIC is hiring a Windows System Administratorto be located inPensacola, FL. This position requires the ability to assist with the architectural, engineering, administration of Windows infrastructure, as well as participate in the change process and incident response processes. The Windows System Administrator will provide: Desktop support of Windows 11 workstations in a Microsoft Active Directory environment. Microsoft Windows Server 2019, 2022, and 2025 support of virtual and physical servers. Management of VMware virtual environments and virtual networking (virtual distributed switches). Basic networking support to include basic troubleshooting. System patching utilizing Windows Server Update Services (WSUS) and Microsoft Endpoint Configuration Manager (MECM). Conduct system backups and restoral utilizing VEEAM. Verification of system vulnerability compliance by reviewing Security Center / Nessus scans. Verification of system configuration compliance with...

Description Team SAIC is currently seeking a motivated and experienced Organizational Messaging System (OMS) System Administrator to join our team at the Pentagon in Arlington, VA. This role is responsible for the daily operation, administration, monitoring, and maintenance of mission-critical defense and enterprise organizational messaging platforms. This role ensures secure, high-availability message routing across classified and unclassified government networks (including SIPRNET and TIPRNET). The successful candidate will blend specialized messaging gateway expertise with core Windows systems administration, virtualization management, enterprise monitoring, and IT Service Management (ITSM) workflows within a high-tempo Network Operations Center (NOC) or Gateway Operations environment. Responsibilities: Administer, configure, and maintain enterprise organizational messaging platforms, such as Automated Message Handling System (AMHS), Enhanced Communications Gateway...