Principal Network Security Engineer Alarm.com IncorporatedPrincipal Network Security EngineerTysons Corner, VA$167,500–$185,250 / yearWe collect and use those categories of Personal Information about you for human resources and other business management purposes, including identifying and evaluating you as a candidate for potential or future employment or future positions, recordkeeping in relation to recruiting and hiring, conducting criminal background checks as permitted by law, conducting analytics, and ensuring compliance with applicable legal requirements and Company policies. The categories of Personal Information that we may collect include your name, government-issued identification number(s), email address, mailing address, other contact information, emergency contact information, employment history, educational history, criminal record, and demographic information.
Sr Network Engineer - (No Remote) Bella Information Systems, LLCSr Network Engineer - (No Remote)DC, DCRemoteThe Senior Network Engineer will work on site & lead customer network and system engineering functions to maintain, modify, and enhance customer network capabilities and services. You will be part of a talented team of engineers that demonstrate superb technical competency, delivering mission critical infrastructure and ensuring the highest levels of availability, performance and security.
Principal Network Security Engineer Alarm.comPrincipal Network Security EngineerTysons, VirginiaWe collect and use those categories of Personal Information about you for human resources and other business management purposes, including identifying and evaluating you as a candidate for potential or future employment or future positions, recordkeeping in relation to recruiting and hiring, conducting criminal background checks as permitted by law, conducting analytics, and ensuring compliance with applicable legal requirements and Company policies. The categories of Personal Information that we may collect include your name, government-issued identification number(s), email address, mailing address, other contact information, emergency contact information, employment history, educational history, criminal record, and demographic information.
Network Engineer- Expert TalentOpsNetwork Engineer- ExpertHerndon, VirginiaThe ideal candidate has extensive hands-on experience with Cisco routing and switching, secure networking, RF communications, network security, and the design of complex voice and data networks within highly secure environments. The Network Engineer will design, integrate, deploy, and support secure enterprise and field-based communications systems spanning LAN, MAN, WAN, voice, video, RF, satellite, cellular, microwave, and other network technologies .
Senior Network Engineer TalentOpsSenior Network EngineerAnnapolis Junction, MarylandThe ideal candidate will bring deep experience supporting LAN/CAN/WAN environments, network architecture, network performance optimization, secure communications, dataflow management, and mission-focused infrastructure. This role is responsible for network services across the full lifecycle, including design, implementation, administration, testing, deployment, maintenance, optimization, and modernization of existing networks.
Network Engineer TalentOpsNetwork EngineerAnnapolis Junction, MarylandThe ideal candidate will bring deep experience supporting LAN, CAN, and WAN environments, along with the ability to design and maintain secure, high-performing network architectures that support mission operations. Implement network solutions supporting server requirements, including load balancing, VPNs, firewall contexts, traffic shaping, VoIP, GRE tunneling, IPSec, IP encryption, Media over IP, and NAT.
Network Engineer – VDI Security / Network Infrastructure TalentOpsNetwork Engineer – VDI Security / Network InfrastructureChantilly, VirginiaThis role supports technical risk assessment and mitigation activities across a broad range of enterprise technologies, including IT systems and networks, mobile and wireless networks, cloud-based computing, network management platforms, communication protocols, scripting and programming products, configuration scripts, and IT hardware and software products. The Network Engineer will manage the security and performance of a virtual desktop infrastructure environment, including networking components, firewall policies, VPNs, network segmentation, and endpoint policy enforcement.
NewNetwork Engineer Amatriot Group, LLCNetwork EngineerChantilly, VA$75,000–$85,000 / yearThe Network Engineer provides guidance to the Network/Server Lead, supports infrastructure planning and implementation, participates in site surveys and installations, and helps ensure supported networks operate with maximum performance, reliability, and availability. This role supports IP networks, WANs, Cisco switches and routers, servers, network-related inventory, site deployments, technical documentation, Tier III issue resolution, and customer reporting.
NewInformation Technology Specialist (Network) United States ArmyInformation Technology Specialist (Network)Washington, DC$51,417–$148,226 / yearSuperior Academic Achievement is based on: (1) Class Standing - You must be in the upper third of the graduating class in the college, university, or major subdivision, such as the College of Liberal Arts or the School of Business Administration, based on completed courses; OR (2) Grade-Point Average (G.P.A.) - You must have a grade-point average of either (a) 3.0 or higher out of a possible 4.0 ("B" or better) as recorded on your official transcript, or as computed based on 4 years of education, or as computed based on courses completed during the final 2 years of the curriculum; or (b) 3.5 or higher out of a possible 4.0 ("B+" or better) based on the average of the required courses completed in the major field or the required courses in the major field completed during the final 2 years of the curriculum. (2) Customer Service - Works with clients and customers (that is, any individuals who use or receive the services or products that your work unit produces, including the general public, individuals who work in the agency, other agencies, or organizations outside the Government) to assess their needs, provide information or assistance, resolve their problems, or satisfy their expectations; knows about available products and services; is committed to providing quality products and services.
NewNetwork Engineer The MITRE CorporationNetwork EngineerMclean, VA$173,200–$216,500 / yearNetwork Implementation & Validation: Configure, deploy, test, and validate enterprise network infrastructure and security services across IPv4/IPv6, LAN/WAN, campus, branch, data center, and cloud environments, including routing, switching, VLANs, VRFs, BGP, OSPF, SDN, SD-WAN, DNS, DHCP, NAT, load balancing, firewalls and ACL policy enforcement, network segmentation, SASE, network orchestration, policy-as-code, and Zero Trust architecture. Experience should include high-bandwidth, low-latency network design for large-scale east-west traffic patterns, fabric architectures such as leaf-spine, and technologies such as high-speed Ethernet and/or InfiniBand, RDMA/RoCE, network segmentation, load balancing, resiliency, and performance testing to support AI/ML training and inference workloads.
NewSystems Administrator - AWS LeidosSystems Administrator - AWSColumbia, MarylandThe ideal candidate brings deep hands-on Linux administration experience and is comfortable supporting mission-critical Development, Test, and Production environments using command-line tools, system logs, automation, and established change-management processes. The Linux Systems Administrator will serve as a senior technical resource responsible for system configuration, automation, security hardening, vulnerability remediation, monitoring, troubleshooting, and continuous improvement of Linux-based infrastructure and operational practices.
NewSystems Administrator LeidosSystems AdministratorColumbia, MarylandThe ideal candidate brings deep hands-on Linux administration experience and is comfortable supporting mission-critical Development, Test, and Production environments using command-line tools, system logs, automation, and established change-management processes. The Linux Systems Administrator will serve as a senior technical resource responsible for system configuration, automation, security hardening, vulnerability remediation, monitoring, troubleshooting, and continuous improvement of Linux-based infrastructure and operational practices.
Senior System Administrator AeroVironment IncSenior System Administratorjessup, MD$170,000–$220,000 / yearDetermination of official compensation or salary relies on several factors including, but not limited to, level of position, job responsibilities, geographic location, scope of relevant work experience, educational background, certifications, contract-specific affordability, organizational requirements, alignment with local internal equity as well as alignment with market data. Agencies of the U.S. Department of Defense and allied military services use the company's hand-launched UAS to provide situational awareness to tactical operating units through real-time, airborne reconnaissance, surveillance, and target acquisition.
Senior Linux Systems Administrator LeidosSenior Linux Systems AdministratorAnnapolis Junction, MarylandThe ideal candidate brings deep hands-on Linux administration experience and is comfortable supporting mission-critical Development, Test, and Production environments using command-line tools, system logs, automation, and established change-management processes. The Linux Systems Administrator will serve as a senior technical resource responsible for system configuration, automation, security hardening, vulnerability remediation, monitoring, troubleshooting, and continuous improvement of Linux-based infrastructure and operational practices.
Senior Linux Systems Administrator - Quality Assurance LeidosSenior Linux Systems Administrator - Quality AssuranceLaurel, MarylandThe Leidos Intel Sector combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations, and decision analytics to support Intelligence Community customers as they address evolving national security challenges. As a Senior Linux Systems Administrator – Quality Assurance, you will leverage your experience to resolve complex operational issues, improve Linux platform reliability, and ensure systems remain ready to support testing, deployment, and mission execution.
Sr. Windows Systems Administrator TS/SCI Poly LeidosSr. Windows Systems Administrator TS/SCI PolyAnnapolis Junction, MarylandThis role also includes supporting server, router, and firewall configuration, as well as performing security management and application performance optimization activities in an environment made up of VMware server hosts, Windows and Linux guest servers, and Virtual Desktop Infrastructure (VDI). • Managing Information Assurance Vulnerability Alerts (IAVAs) and system security scanning in accordance with applicable System Security Plans, ensuring vulnerabilities are identified and remediated quickly and accurately.
Linux Systems Administrator - Quality Assurance LeidosLinux Systems Administrator - Quality AssuranceLaurel, MarylandThe Leidos Intel Sector combines technology-enabled services and mission software capabilities in the areas of cyber, logistics, security operations, and decision analytics to support Intelligence Community customers as they address evolving national security challenges. August 18, 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.
Cloud Systems Administrator/AWS Solutions Architect Concept Solutions LLCCloud Systems Administrator/AWS Solutions ArchitectWashington, DC$110,000–$119,000 / yearDesign, build, and optimize automated CI/CD deployment pipelines (using AWS CodePipeline, AWS CodeBuild, GitLab CI, GitHub Actions, or Azure DevOps) to run automated SAST/DAST security scans, manage Amazon ECR container images, and execute zero-downtime releases. Hybrid Cloud Network Management: Architect and maintain dedicated private fiber setups via AWS Direct Connect, encrypted fallback connections using AWS Site-to-Site VPN, centralized multi-VPC routing with AWS Transit Gateway, and bi-directional name resolution via Amazon Route 53 Resolver (Inbound/Outbound endpoints).
System Administrator AeroVironment IncSystem AdministratorAnnapolis Junction, MD$150,000–$175,000 / yearDetermination of official compensation or salary relies on several factors including, but not limited to, level of position, job responsibilities, geographic location, scope of relevant work experience, educational background, certifications, contract-specific affordability, organizational requirements, alignment with local internal equity as well as alignment with market data. Agencies of the U.S. Department of Defense and allied military services use the company's hand-launched UAS to provide situational awareness to tactical operating units through real-time, airborne reconnaissance, surveillance, and target acquisition.
Network Infrastructure Specialist CACINetwork Infrastructure SpecialistReston, VirginiaThis requisition supports multiple experience levels—from technicians and administrators responsible for day-to-day network operations to engineers and architects designing enterprise routing, switching, firewall, wireless, and cloud networking solutions. Successful candidates will collaborate across infrastructure, cybersecurity, systems engineering, and operations teams to deliver secure, resilient, and scalable network services supporting domestic and international missions.