System Administrator Level 2 - (Linux, Unix, Windows) AkinaSystem Administrator Level 2 - (Linux, Unix, Windows)Annapolis Junction, MarylandConfigures and manages Linux, Unix, and Windows operating systems and installs/loads operating system software, troubleshoots, maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance. Configure and manage Linux, Unix, and Windows (or other applicable) operating systems and installs/loads operating system software, troubleshoot, maintain integrity of and configure network components, along with implementing operating systems enhancements to improve reliability and performance.
System Administrator, Level 2 Avalore, LLCSystem Administrator, Level 2Annapolis Junction, MDConfigures and manages UNIX and Windows operating systems and installs/loads operating system software, troubleshoots, maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance. Configure and manage UNIX and Windows (or other applicable) operating systems and installs/loads operating system software, troubleshoot, maintain integrity of and configure network components, along with implementing operating systems enhancements to improve reliability and performance.
System Administrator 2 InterImageSystem Administrator 2Fort Meade, MarylandConfigures and manages UNIX and Windows operating systems and installs/loads operating system software, troubleshoots, maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance. Configure and manage UNIX and Windows (or other applicable) operating systems and installs/loads operating system software, troubleshoot, maintain integrity of and configure network components, along with implementing operating systems enhancements to improve reliability and performance.
Principal System Administrator Themis InsightPrincipal System AdministratorFort Meade, MDConfigures and manages UNIX and Windows operating systems and installs/loads operating system software, troubleshoots, maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance. Configure and manage UNIX and Windows (or other applicable) operating systems and installs/loads operating system software, troubleshoot, maintain integrity of and configure network components, along with implementing operating systems enhancements to improve reliability and performance.
Sr. System Administrator Themis InsightSr. System AdministratorFort Meade, MDConfigures and manages UNIX and Windows operating systems and installs/loads operating system software, troubleshoots, maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance. Configure and manage UNIX and Windows (or other applicable) operating systems and installs/loads operating system software, troubleshoot, maintain integrity of and configure network components, along with implementing operating systems enhancements to improve reliability and performance.
System Administrator 2 - (UNIX, Windows, AWS) AkinaSystem Administrator 2 - (UNIX, Windows, AWS)MarylandConfigures and manages UNIX and Windows operating systems and installs/loads operating system software, troubleshoots, maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance. Configure and manage UNIX and Windows operating systems and install/load operating system software, troubleshoot, maintain integrity of and configure network components, along with implementing operating systems enhancements to improve reliability and performance.
System Administrator, Level 2 AvaloreSystem Administrator, Level 2Annapolis Junction, MarylandConfigures and manages UNIX and Windows operating systems and installs/loads operating system software, troubleshoots, maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance. Configure and manage UNIX and Windows (or other applicable) operating systems and installs/loads operating system software, troubleshoot, maintain integrity of and configure network components, along with implementing operating systems enhancements to improve reliability and performance.
SYSTEM ADMINISTRATOR – DevOps/AWS - 10 yrs of Experience - TS/SCI w/Poly clearance is required - TB - 0659 Halogen Engineering GroupSYSTEM ADMINISTRATOR – DevOps/AWS - 10 yrs of Experience - TS/SCI w/Poly clearance is required - TB - 0659Annapolis Junction, Annapolis JunctionConfigures and manages UNIX and Windows operating systems and installs/loads operating system software, troubleshoots, maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance. Provide Tier 1 (Help Desk) and Tier 2 (Escalation) problem identification, diagnosis and resolution of problems (U) Provide support to IT systems including day-to-day operations, monitoring and problem resolution for all of the client/server/storage/network devices, mobile devices, etc.
SYSTEM ADMINISTRATOR – Linux/RHEL - 15 yrs of Experience - TS/SCI w/Poly clearance is required - TB - 0446 Halogen Engineering GroupSYSTEM ADMINISTRATOR – Linux/RHEL - 15 yrs of Experience - TS/SCI w/Poly clearance is required - TB - 0446Annapolis Junction, Annapolis JunctionConfigures and manages UNIX and Windows operating systems and installs/loads operating system software, troubleshoots, maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance. Provide Tier 1 (Help Desk) and Tier 2 (Escalation) problem identification, diagnosis and resolution of problems (U) Provide support to IT systems including day-to-day operations, monitoring and problem resolution for all of the client/server/storage/network devices, mobile devices, etc.
System Administrator L1 UnisitySystem Administrator L1Annapolis Junction, MarylandConfigures and manages Linux, Unix, and Windows operating systems and installs/loads operating system software, troubleshoot, maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance. Provides support to IT systems including day-to-day operations, monitoring and problem resolution for all of the client/server/storage/network devices, mobile devices, etc.
TOC Engineer General Dynamics Information TechnologyTOC EngineerBethesda, MarylandAuthor reports, participate in incident review meetings, facilitate active problem management activities, routinely follow up on long-term problems, prepare data for status/findings presentations, prepare flowcharts and draft process documents for team activities. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available.
Information Systems Security Officer Leidos Holdings IncInformation Systems Security OfficerAshburn, VA$107,900–$195,050 / yearEnsure that assigned systems are operated, maintained, and disposed of in accordance with applicable policies and procedures NIST SP 800-37, Rev 2, Risk Management Framework for Information Systems and Organizations: A System Life Cycle Approach for Security and Privacy, DHS 4300A Policy and Handbook, CBP Information Systems Security Policies and Procedures Handbook (HB 1400-05), and internal CBP (i.e., Office of Information Technology, Security Operations Division, etc.) security policies and practices. Develop, review, maintain, and provide system security documentation for assigned systems, including System Security Plans, Interconnection Security Agreements, Contingency Plans, Plans of Action and Milestones, (POA&M), Waivers, and Exceptions through the DHS FISMA system management tool in use to implement and manage the NIST Risk Management Framework.
System Administrator L3 UnisitySystem Administrator L3Annapolis Junction, MarylandConfigures and manages UNIX and Windows operating systems and installs/loads operating system software, troubleshoots, maintains integrity, and configures network components along with implementing operating systems enhancements to improve reliability and performance. Configure and manage UNIX and Windows (or other applicable) operating systems and installs/loads operating system software, troubleshoot, maintain integrity of and configure network components, along with implementing operating systems enhancements to improve reliability and performance.
Information System Security Professionals ISSO ISSE LeidosInformation System Security Professionals ISSO ISSEAnnapolis Junction, Maryland$131,300–$237,350 / yearOur talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. January 5, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
NewInformation Technology Specialist (Systems Administration/Operating Systems) United States ArmyInformation Technology Specialist (Systems Administration/Operating Systems)Washington, DC$84,109–$109,344 / yearExamples of IT-related experience demonstrating this competency include: solving complex or sensitive problems by developing and proposing strategic alternatives; identifying possible conflicts and shared benefits; helping team anticipate problems and identifying and evaluating potential sources of information; providing feedback and coaching to others to help solve problems; engaging appropriate stakeholders when developing solutions in order to understand and incorporate multiple perspectives and needs; evaluating the effectiveness of decisions and adjusting future decisions as appropriate. Specialized experience would be demonstrated by administering and maintaining enterprise Linux operating systems and associated virtualization platforms; diagnosing and resolving complex system, network, and application issues to ensure high levels of reliability, availability, and security; and providing technical guidance to leadership on the implementation of new systems, enhancement of existing architectures, and adherence to Department of War Information Network cybersecurity policies, IAVA requirements, and organizational policies.
Senior Information System Security Officer LeidosSenior Information System Security OfficerAnnapolis Junction, Maryland$131,300–$237,350 / yearThe selected candidate will act as an ISSO for a large software development program which includes software maintenance and development, IT support (Network/Workstation/Server), systems integration and life cycle support, enterprise application development, network engineering, and information systems security (ISS). Provide support for Information Assurance Vulnerability Alerts (IAVAs) management (initiating IAVA responses and system security scans, completing remediation, extending IAVA patches and security updates to designated sites, etc.).
Cybersecurity Policy Lead gTANGIBLE CorporationCybersecurity Policy LeadWashington, District of ColumbiaA minimum of 15 years of IT cybersecurity experience, including direct support for the US Government and 7 years serving as a Policy Analyst for an enterprise IT systems OR a relevant Master's Degree in IT, Computer Science, Business, or Engineering and 10 years' of IT cybersecurity experience including direct support for the US Government and 5 years serving as a Policy Analyst . Assist with reviewing and interpreting Executive Orders (EOs), OMB memos, Public Law (PL), DHS directives such as Binding Operational Directives (BODs), DHS Undersecretary Memos, NIST SPs, recommended best practices or other external source documents .
System Administrator Level 2-FFPP-8916 Onyx PointSystem Administrator Level 2-FFPP-8916Hanover, MarylandConfigure and manage UNIX and Windows (or other applicable) operating systems and installs/loads operating system software, troubleshoot, maintain integrity of and configure network components, along with implementing operating systems enhancements to improve reliability and performance. -Provide support to IT systems including day-to-day operations, monitoring and problem resolution for all of the client/server/storage/network devices, mobile devices, etc.
Information System Security Professionals Isso Isse Leidos Holdings Inc.Information System Security Professionals Isso IsseFort Meade, MD$131,300–$237,350 / yearOur talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. Apply system security engineering expertise in areas such as system security design, life cycle, risk management, and security testing, using industry system security engineering methodologies.
TOC Engineer GD Information TechnologyTOC EngineerBethesda, MarylandAuthor reports, participate in incident review meetings, facilitate active problem management activities, routinely follow up on long-term problems, prepare data for status/findings presentations, prepare flowcharts and draft process documents for team activities. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available.