June 16, 2026For 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.
Experience evaluating enterprise network architectures and developing improvement plans across LAN, WAN, WLAN, routing, switching, firewalls, VPN, proxies, security stacks, software-defined networking, and cloud-connected environments.
May 26, 2026For 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
June 16, 2026For 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.
Experience evaluating enterprise network architectures and developing improvement plans across LAN, WAN, WLAN, routing, switching, firewalls, VPN, proxies, security stacks, software-defined networking, and cloud-connected environments.
ul>This position requires at least 8+ years’ experience supporting networking for DoD Command and Control Systems such as Multisource Correlator Tracker (MSCT), Common Aviation Command and Control System (CAC2S), Air Defense System Integrator (ADSI), or Theater Battle Management Core System (TBMCS). Arcticom, LLC provides network and systems administration, enterprise architecture and resource planning, certification and accreditation, software design, programming, maintenance of telecommunications and land mobile radio equipment and systems, help desk support and IT transformation services among other services.
June 24, 2026For 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
May 21, 2026For 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
p>(Group Profile/Link to Group page) - https://www.leidos.com/capabilities/digital-modernization. Proven expertise with Generative AI infrastructure, including: Production-ready Retrieval-Augmented Generation (RAG) pipelines, Scalable vector databases (e.g., Pinecone, Weaviate, Milvus, FAISS, or managed services) with indexing, clustering, and optimized retrieval, GPU/TPU compute clusters, managed container orchestration (Kubernetes/EKS/AKS/GKE), and auto-scaling for large language model (LLM) workloads.
April 24, 2026For 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
June 22, 2026For 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. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.
Springfield, VA30+ days ago
5+ years of hands-on systems administration of Microsoft SQL Server (2016 - 2022) and enterprise server applications, specializing in Windows Server Failover Clustering (WSFC), Always On Availability Groups, SQL Server Management Studio (SSMS). 3+ years of experience managing SQL Server integrated within a Microsoft AD domain and forest, including service account security (gMSAs), Kerberos constrained delegation (SPNs), and DNS/DHCP configurations for multi-subnet clusters.
The Navy Integrated Training Environment (NITE) System Administrator is responsible for administration, maintenance, and cybersecurity defense of all Navy Enterprise Tactical Training Network (NETTN) client and server infrastructure used to support enterprise-wide modeling and simulation applications and services for the NITE. Our capabilities range from C5ISR, AI and Big Data, cyber operations and synthetic training environments to fleet sustainment, environmental remediation and the largest family of unmanned underwater vehicles in every class.
Fort Meade, MD30+ days ago
This role requires a strong understanding of various operating systems, networking principles, virtualization technologies, and cybersecurity best practices to ensure the reliability, availability, and integrity of mission-critical systems. Our capabilities range from C5ISR, AI and Big Data, cyber operations and synthetic training environments to fleet sustainment, environmental remediation and the largest family of unmanned underwater vehicles in every class.
Fort Meade, MD30+ days ago
This role requires a strong understanding of various operating systems, networking principles, virtualization technologies, and cybersecurity best practices to ensure the reliability, availability, and integrity of mission-critical systems. 3 years relevant experience with Bachelors in related field; 1 year relevant experience with Masters in related field; or High School Diploma or equivalent and 7 years relevant experience.
Springfield, VA30+ days ago
System Administrator: 3 years relevant experience with Bachelors in related field; 1 year relevant experience with Masters in related field; or High School Diploma or equivalent and 7 years relevant experience. This position is part of our Cyber and Intelligence division, which plays a critical role in supporting Enterprise-Level Security and Modernization efforts across IT infrastructure, cybersecurity, physical facilities, and personnel operations.
Fort Belvoir, VA30+ days ago
Implementing and maintaining the organization's cybersecurity toolsets, such as endpoint security solutions (ESS), malware protection, network detection & response (NDR), and endpoint detection & response (EDR) . As a Cyber Tools Administrator, you'll play a pivotal role in protecting our digital assets and strengthening our security posture through proactive monitoring, analysis, and implementation of cutting-edge security solutions.
Springfield, VA30+ days ago
Office SharePoint Server (MOSS) and Outlook Web Apps (OWA) 10 provide an enterprise platform 10 share and manage content, knowledge, and applications to empower teamworks quickly find information, and be able to collaborate across the organization. 5 years relevant experience with Bachelors in related field; 3 years relevant experience with Masters in related field; 0 years experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 9 years relevant experience.
Springfield, VA30+ days ago
5 years relevant experience with Bachelors in related field; 3 years relevant experience with Masters in related field; 0 years experience with PhD or Juris Doctorate in related field; or High School Diploma or equivalent and 9 years relevant experience. Our workforce includes skilled tradespeople; artificial intelligence, machine learning (AI/ML) experts; engineers; technologists; scientists; logistics experts; and business administration professionals.
Assist the Mission Coordinator in working with the Marine Enterprise Training Network (MTEN) and Navy Continuous Training Environment (NCTE) local and remote operators and engineers, and external Joint Live Virtual Constructive (JLVC) teams to coordinate and plan systems and personnel support for events. The C2 Systems Integrator works onsite at the Marine Corps Base Quantico, Virginia supporting Naval Surface Warfare Center- Corona (NSWC-Corona) in providing LVC training for US Marin Corps and reports directly to the LVC Mission Coordinator.
Springfield, VA30+ days ago
Systems Administrator 4: 10+ years relevant experience with Bachelors; 8 years relevant experience with Masters in related field; or High School Diploma or equivalent and 14 years relevant experience. Systems Administrator 3: 6+ years relevant experience with Bachelors; 4 years relevant experience with Masters in related field; or High School Diploma or equivalent and 10 years relevant experience.
Springfield, VA30+ days ago
Lead solution design and requirement decomposition, translating mission/business needs into technically sound ServiceNow designs (data model, workflows, integrations) . Experience translating business requirements into technical stories and acceptance criteria, facilitating requirements gathering sessions with stakeholders, and documenting users stories, functional requirements, process flows, and acceptance criteria.
The Carnegie Endowment for International Peace, a global network of policy research centers, is seeking a full-time Cybersecurity and Network Administrator (CNA) to manage and secure its technology infrastructure and equip staff withcybersecurity best practices. The CNA will work under the supervision of the Senior Technology and Cybersecurity Manager andwill also work closely with Carnegie's outsourced Tier 3 network engineers to ensure that all infrastructure systems are performing as expected.
Fort Belvoir, Virginia30+ days ago
Primary focus will be on, handling internal projects for operations, supporting driving time-sensitive initiatives, supports ITIL service area activities (problem management, incident management, service request fulfillment, etc.) and specific tasks to a successful conclusion, operations management, configuration/change management, service level agreements (SLA). The I3TS program provides enterprise-wide IT support to enable DTRA’s Information Management & Technology Directorate (ITD) to consolidate, modernize, and continuously innovate the delivery of IT services and mission capabilities to DTRA’s internal and external mission partners operating in CONUS and OCONUS locations.
Troubleshoot network connectivity issues, including WAN circuits, equipment failures, router/switch configurations, firewall ACLs, VoIP device setup, and cryptographic device/keying material. Operate, monitor, and maintain local area networks (LAN), wide area networks (WAN), and virtual private networks (VPN) to ensure smooth, reliable performance.
Our robust portfolio of offerings across the defense, space, intelligence, and civilian markets includes secure high-end solutions in mission IT, enterprise IT, engineering services, and professional services. Required Certification:
- IAT Level II Certification equivalent or higher per DoD 8570/DoD 8140 (CompTIA Security+ CE, CCNA Security, GICSP, GSEC, SSCP, etc.).
Our team is at the cutting edge of Security Engineering, Computer Network Operations (CNO), Mission Software, SIGINT, and advanced analytics-delivering solutions that directly support critical national security missions. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
Arlington, VA30+ days ago
Experience designing, supporting, and troubleshooting high-bandwidth, low-latency multi-site networks, including Cisco routing/switching, Cisco ISE, firewalls, VPNs, optical transport, and high-capacity data circuits (Juniper and Ciena experience strongly valued). As a Lead Network Administrator working for AMERICAN SYSTEMS in a high-performance computing environment, you will: Architect and engineer high-bandwidth, low-latency inter-site network solutions connecting geographically dispersed HPC sites.
Sterling, Virginia30+ days ago
Daily tasks include, but are not limited to: Plan network configurations for integration into the network, using knowledge of the performance characteristics of the systems being added to the network and the specifications for network interfaces to ensure effective integration and optimal network performance.
The Network Administrator (NA) collaboratively works closely with the leadership, CPM/CPO, FE SRE and Product Team (Platform) to design, engineer, install, operate, and maintain the terrestrial, satellite, and WAN/MAN/LAN networks and communication systems.
Washington, DC15 days ago
NFF is a Cisco Gold Integrator Partner, Splunk Partner, Arista Partner, Cohesity Partner, Apptega Partner, NetApp Gold Partner, VMware Enterprise Partner, Alloterra Labs Partner, Axis Communications Partner, Asimily Partner, Signify Partner, Rapid7 Partner, Foresite Partner, Arctic Wolf Partner, Microsoft Certified Silver Partner, and Dell Solution Provider Partner. Our expertise includes solutions for Artificial Intelligence Enablement, Data Center & Cloud, Intelligent Networks, Secure, Connected IoT Technologies, Professional and Managed Services, Workforce Solutions and Zero Trust Strategies.
li>Conduct Tier I/Tier II technical diagnostics of networks, including server resets (Citrix), SNMPc, pinging servers, user accounts, TAVEE reports, etc.
For our government customers, Tuvli ensures that solutions are strictly aligned with agency processes and desired program outcomes while delivering the best value for technology investments.
Maximus compensation is based on various factors including but not limited to job location, a candidate's education, training, experience, expected quality and quantity of work, required travel (if any), external market and internal value analysis including seniority and merit systems, as well as internal pay alignment. Maximus TCS (Technology and Consulting Services) Internal Job Profile Code: TCS134, T2, Band 5.
Job-Specific Essential Duties and Responsibilities:
- Configure and maintain network devices such as routers, switches, firewalls, load balancers, and VPN concentrators.
Arlington, VA30+ days ago
As part of this task order, Leidos will manage the commercial cloud migration and disestablishment of legacy systems, fully automate the continuous development & continuous integration environment, fourth estate consolidation, professionalize services ITIL/DevSecOps based processes, improve the customer experience 1st call resolution, and achieve development of a service catalog for Defense Working Capital Fund (DWCF) Model. With the CESO program, the Defense Information System Agency (DISA) is looking to transform the existing Secure Web Services (SWS) environment, which provides secure information sharing to the community, into a more mature service offering to meet the DoD and intelligence communities.
Alexandria, Virginia7 days ago
Conduct Tier I/Tier II technical diagnostics of networks, including server resets (Citrix), SNMPc, pinging servers, user accounts, TAVEE reports, etc. For our government customers, Tuvli ensures that solutions are strictly aligned with agency processes and desired program outcomes while delivering the best value for technology investments.
Annapolis Junction , Maryland30+ days ago
As part of (SES) Strategic Business Unit you will be part of a team that designs, engineers, integrates, operates and maintains electronic security services inclusive of intrusion detection, access control, biometric authentication, video surveillance, audio visual, it systems, perimeter defense and command and control systems for federal, local and commercial customers across high-growth markets. Qualifications: Clearance/Citizen Type: Applicants selected will be subject to a government security investigation and must meet eligibility requirements, including U.S. Citizenship, for access to classified information; Active TS/SCI with polygraph is required.
Must maintain a state of travel readiness required to take prompt action on support requests which may require local and/or overnight travel to Government locations (Local short notice travel to customer sites is common, extended overnight and air travel is typically less than 5% per year). The Network Administrator reports to a Team Lead and provides IT Field Operations (ITFO) support for 24x7 LANs and associated applications, peripherals, connectivity, and end-users in a Service Desk supported Tier II environment.
Fort Belvoir, VA30+ days ago
Primary focus will be on, handling internal projects for operations, supporting driving time-sensitive initiatives, supports ITIL service area activities (problem management, incident management, service request fulfillment, etc.) and specific tasks to a successful conclusion, operations management, configuration/change management, service level agreements (SLA). The I3TS program provides enterprise-wide IT support to enable DTRA's Information Management & Technology Directorate (ITD) to consolidate, modernize, and continuously innovate the delivery of IT services and mission capabilities to DTRA's internal and external mission partners operating in CONUS and OCONUS locations.
Quantico, Virginia16 days ago
Designing enterprise networks including LAN, WAN, cloud solutions, software defined networking, load balancing, zero trust, and networking encryption solutions; strong communication skills and ability to provide consultative technical guidance. Ensure technical documentation exists for all systems and is kept up to date to include inventory and patch levels of all systems to include hostnames, property numbers, IP addresses, enclave, number of cores, number of processors, admin passwords, certificates, and service accounts on a monthly interval.
There are multiple factors that are considered in determining final pay for a position, including, but not limited to, relevant work experience, skills, certifications and competencies that align to the specified role, education and certifications as well as contract provisions regarding labor categories that are specific to the position and could fall outside of this range. We have a unified operating model providing technical capabilities and solutions for customers across two main business units:
- National Security – supporting agencies such as the Department of Homeland Security (DHS), Navy, Air Force, Army, and the Department of State (DOS).
This project will provide IT service desk, systems, network, and security operations support for Federal Prison Industries (UNICOR), supporting end users, Microsoft infrastructure, and mission-critical business systems in hybrid work environments. The Junior Network Administrator ensures that all computers and other devices connected to networks, including routers, hubs and switches, are operating correctly.
div class="content-intro">MKS2 Technologies, LLC, an award-winning high growth small business, creates innovative and customer-centric technology solutions in the areas of Cyber Security, Instructional Design and Training, Software Engineering and IT Support Services to improve the security and well-being of our clients. This position requires a strong understanding of DoD network environments, switch maintenance, network monitoring platforms, vulnerability remediation, and technical documentation supporting network performance, availability, configuration management, and security compliance across enterprise systems.
p>What You Will Do: • Windows and Linux system administration of enterprise wide or program/lab related systems, including setting up new and/or maintaining existing environments • Administration or support of virtualized environments leveraging a range of technologies including VMWare, Hyper-V, Citrix, and Proxmox • Administration or support of enterprise domain environments, including Group Policy, SCCM, PKI, DHCP, and DNS • Basic network administration of network appliances, implementation of new ACLs of VLANs for a given environment • Documenting and reporting of overall system configuration and adherence to any hardening requirements (such as CIS, DISA STIG, NIST, etc) for a given environment and working with Solipsys Cyber Operations group as required for vulnerability mitigations, incident response, and/or compliance efforts • Assisting in implementation and integration of COTS solutions and infrastructure deployments that enhance and address Information Technology related projects to provide new capabilities or services, in addition to management and compliance of existing security technologies deployed throughout the enterprise • Collaborating with team members to leverage skills and knowledge of enterprise IT solutions to develop, and design future technology solutions to ensure they are consistent with enterprise architecture security policies • Staying up to date with current technology innovations. for racking equipment Ability to communicate well in oral and written form Self-driven and highly motivated with strong problem-solving skills Familiarity with Container technologies, Cloud technologies, DevOps concepts, and/or software development experience Proficiency with scheduling and prioritization of workloads based on numerous factors such as schedule, resource availability, and on-demand requests from escalated tickets or emergent requests Proficiency in scripting via bash and/or Powershell A Microsoft Certified Systems Administrator (MCSA), RedHat Certified Systems Administrator (RHCSA), VMWare VCP, or other industry relevant certifications.
This team is at the forefront of Security Engineering, Computer Network Operations (CNO), Mission Software, SIGINT, and advanced analytics, delivering mission-critical capabilities that directly support national security. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
Washington, DC30+ days ago
Location Washington, DC Opening and Closing Dates 03/25/2026 - Open Until Filled Appointment Type Permanent Classification Level/Grade CL 28 Salary $81,906 - $133,178 Announcement Number CFC-2026-04-IT Link to Job Announcement. The Systems & Network Administrator performs routine administration to the servers and implements complex updates, including developing systems documentation and data network security.
p>Active TS/SCI + CI Poly clearance HS, 6-8 years of relevant experience; BS, 0-2 years Network+ or Security+ One of the following network certifications: CCNA (Enterprise or Security for legacy environments) Juniper JNCIA DESIRED QUALIFICATIONS. The Junior Network Administrator, Installation, provides ongoing network support, addresses availability issues, overcomes performance problems, and provides overall level 2 support.
Ft Belvoir, Virginia30+ days ago
Primary focus will be handling internal projects for operations, supporting driving time-sensitive initiatives and ITIL service area activities (problem management, incident management, service request fulfillment, etc.) and specific tasks leading to a successful conclusion of operations evaluation, configuration/change management, and service level agreements (SLA) compliance. The I3TS program provides enterprise-wide IT support to enable DTRA’s Information Management & Technology Directorate (ITD) to consolidate, modernize, and continuously innovate the delivery of IT services and mission capabilities to DTRA’s internal and external mission partners operating in CONUS and OCONUS locations.
The Network Journeyman / Intermediate Administrator will provide daily operational support for network infrastructure, monitoring tools, server systems, and cybersecurity compliance activities. This position requires a strong understanding of DoD network environments, switch maintenance, network monitoring platforms, vulnerability remediation, and technical documentation.
The consultant will be responsible for deployment, administration, troubleshooting, and support of SD-WAN, PKI, secure authentication services, and enterprise network operations. Seeking an experienced Network Administrator to support enterprise network and identity infrastructure modernization initiatives.