Cyber Security Engineer III System OneCyber Security Engineer IIISpringfield, VA$135,000–$135,000 / hourThe ideal candidate will have hands on experience in incident response, CSOC or SOC operations, digital forensics, malware analysis, indicator development, and cyber incident reporting within a DoD, Intelligence Community, or federal cyber environment. • Experience supporting cyber incident response, CIRT, CSOC, SOC, DFIR, threat hunting, or defensive cyber operations.
NewData Security Engineer System OneData Security EngineerVienna, VAProvide technical guidance and collaboration with other Cyber Security Engineers supporting technologies within designated area of focus (Data Scanning). Establish and maintain supporting documentation (architecture/data flow diagrams, runbooks, ServiceNow tickets, user stories and tasks).
NewSr Cloud Security Engineer PlanIT GroupSr Cloud Security EngineerFalls Church, VAExperience: 8+ years in a technical Cybersecurity Engineering role, with at least 4 years focused on large-scale cloud or hybrid environments, and a portfolio of projects where AI or Machine Learning was directly applied to solve security or operational scaling problems. • API-First Automation: Deep expertise in building "glue code" that connects disparate COTS and custom applications via secure, automated APIs to streamline cross-functional business activities.
Systems Admin/Cyber Security Engineer System OneSystems Admin/Cyber Security EngineerVienna, VARemoteThe engineer works closely with cyber teams, manages ticket queues, performs access reviews, responds to audits, and contributes to documentation while supporting Agile/Kanban workflows and enterprise security initiatives. We are looking for candidates with 7-10 years of experience as a Systems Administrator with strong Linux/Windows administration, cybersecurity operations, patch management, automation, networking, and enterprise change management experience.
Senior Network Engineer (CCIE) – Security System OneSenior Network Engineer (CCIE) – SecurityAlexandria, VA$230,000–$270,000 / yearThe ideal candidate will bring deep hands-on experience designing, securing, optimizing, and troubleshooting complex network environments while also serving as a technical leader and trusted advisor to government stakeholders. The Senior Network Engineer / Security SME will provide expert-level network engineering, security architecture, and operational support across enterprise and tactical networks.
NewIT- Cyber Security Architect/ Engineer III PlanIT GroupIT- Cyber Security Architect/ Engineer IIIFalls Church, VASecuring AI Workflows: Design security frameworks for the end-to-end AI lifecycle, including securing data ingestion, protecting model weights, and implementing "Guardrail" architectures for Large Language Models (LLMs). • AI-Enhanced Pipeline Security: Architect and maintain automated CI/CD pipelines that utilize AI/ML models for static and dynamic analysis (SAST/DAST) to identify complex vulnerabilities that traditional rule-based tools miss.
Data Automation Engineer Big Impact Tech (BIT)Data Automation EngineerWashington, DCFull timeThe ideal candidate will design, develop, and maintain automated data pipelines, workflows, and integration solutions that improve operational efficiency, data quality, and reporting capabilities. We deliver mission-focused solutions in digital transformation, cloud technologies, cybersecurity, enterprise platforms, and program management.
AWS Cloud Security Engineer System OneAWS Cloud Security EngineerMcLean, VARemoteSupport alignment with security and compliance frameworks such as CIS Benchmarks, NIST, HIPAA, FedRAMP, and SOC 2. • Assist with incident detection, investigation, response, and audit trail maintenance across AWS accounts and services. • Strong hands-on knowledge of AWS services, including EC2, S3, RDS, Lambda, ECS/EKS, CloudFront, Route 53, IAM, CloudTrail, AWS Config, and KMS.
Junior Linux Systems Engineer (RHEL/Clearance) JobotJunior Linux Systems Engineer (RHEL/Clearance)Manassas, VA$80,000–$100,000 / yearInformation collected and processed as part of your Jobot candidate profile, and any job applications, resumes, or other information you choose to submit is subject to Jobot's Privacy Policy, as well as the Jobot California Worker Privacy Notice and Jobot Notice Regarding Automated Employment Decision Tools which are available at jobot.com/legal. Integrating and testing software deliveries, verifying bug fixes, and performing regression testing across multiple hardware and operating system configurations.
NOC Support Engineer Inmarsat Government, IncNOC Support EngineerReston, VAFull timeLeveraging an industry-leading scalable, multi-band network infrastructure, Inmarsat Government offers a suite of managed network services and end-to-end communication solutions to support users on land, at sea and in the air, even in the world’s most remote regions. The NOC Support Engineer is responsible for maintaining, modifying, and managing the NOC's software and monitoring infrastructure, including hardware and software applications used to monitor and manage Inmarsat Government's global MPLS and SATCOM networks.
SPOC Engineer Inmarsat Government, IncSPOC EngineerReston, VAFull timeThese activities may be under guidance or instruction from management/support personnel or conducted directly by the individual and will include routine on-station operational tasks on the satellites and Ground Control System (GCS), special activities in response to non-nominal conditions, off-line support functions, together with first level trouble shooting and anomaly resolution of the satellites and GCS. Leveraging an industry-leading scalable, multi-band network infrastructure, Inmarsat Government offers a suite of managed network services and end-to-end communication solutions to support users on land, at sea and in the air, even in the world’s most remote regions.
NewSenior Specialist, Information Security Systems Engineering L3Harris TechnologiesSenior Specialist, Information Security Systems EngineeringChantilly, VA$106,500–$196,500 / yearAssist in systems/software engineering functions, to include creation of data flow diagrams, interface control documents, perform trade studies, and Static Application Security Testing (SAST) for Application Security and Development Secure Technical Implementation Guide (STIG) compliance using tools such as Fortify/Coverity and Gitlab as part of a DevSecOps Continuous Integration/Continuous Deployment (CI/CD) Pipeline, and generation of summary reports. Perform skills in implementing/assessing security controls, to include writing system security categorization memorandum, recommending appropriate security control overlays, define security control baseline based on defined system security categorization and approved security overlays, and apply security controls to computing/network nodes and verify implementation of security controls.
Network Engineer II Company ConfidentialNetwork Engineer IIReston, VAFull timeProvide assistance and oversight for all information systems operations activities, including computer and telecommunications/communications operations, data entry, data control, LAN/MAN/WAN administration and operations support, operating systems programming, system security policy procedures, and/or web strategy and operations. Perform a variety of systems engineering tasks and activities that are broad in nature and are concerned with major systems design, integration, and implementation, including, hardware, software, budgetary, and support facilities and/or equipment.
NewLead, Software Engineer L3Harris TechnologiesLead, Software EngineerHerndon, VAPlease click here for the E-Verify Poster in English or Spanish. In addition to technical contributions, this position conducts the day‑to‑day software lead activities by providing technical guidance, assigning tasks, reviewing and approving formal documentation, and estimating labor, tools, and other resources to meet budget and schedule commitments.
NewIT - Information Security/Privacy Analyst II PlanIT GroupIT - Information Security/Privacy Analyst IIReston, VACollaborate with security engineers, compliance officers, and business managers to ensure policies are both technically sound and operationally practical. • The enforced dress code is business casual, i.e., collared shirt with slacks for men, no skirts above the knee for women.
NewSenior Network Engineer SONA Networks, LLCSenior Network EngineerWashington, DCContractorThe position is responsible for managing Cisco-based networking environments including Cisco Catalyst and Nexus platforms, wireless networks, ISE, and IPS, while ensuring high availability, security compliance, and continuous operations. This role supports the stability, performance, and security of enterprise and data center network infrastructure.
NewSenior Communications Security (COMSEC) Engineer LeidosSenior Communications Security (COMSEC) EngineerFort Belvoir, VA$92,300–$166,850The 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 . Experience in network and network security design where under general direction, manages the design, installation and support of LAN/WAN based networks and security components such as routers, switches and firewalls, and datacenter equipment .
Hybrid Cloud Engineer ECLAROHybrid Cloud EngineerWashington DC, DCli>Cloud Operations & Reliability: Experience designing highly available systems using Azure-native tools for monitoring, backup, disaster recovery, and cost optimization. Virtualization & Core Infrastructure: Deep expertise in VMware (vSphere, ESXi, NSX, vCenter, SRM) and enterprise compute, storage, networking, and Active Directory.
NewDevSecOps Engineer CredenceDevSecOps EngineerMcLean, VAThe position focuses on enabling reliable and scalable software delivery by building and optimizing CI/CD pipelines, infrastructure automation, and deployment workflows, while improving developer experience, release velocity, application quality, and system reliability across multi-stack environments. This role supports a variety of modern applications, including backend services, frontend applications, and data pipelines, with a strong emphasis on pipeline engineering, Infrastructure as Code (Terraform), and cloud-native deployments.
NewLead, Systems Engineer - Mission Protection L3Harris TechnologiesLead, Systems Engineer - Mission ProtectionSpringfield, VAPlease click here for the E-Verify Poster in English or Spanish. The ideal candidate demonstrates strong leadership, technical depth in threat-informed engineering, and the ability to integrate Mission Protection requirements into operational planning, system architecture, and lifecycle activities.
NewSenior Field Engineer Sparks GroupSenior Field EngineerSterling, VAThis role is ideal for a hands-on engineer with strong PLC/HMI programming experience who enjoys field work, troubleshooting complex systems, and traveling to customer sites throughout the U.S. and occasionally internationally. Responsibilities: • Program, troubleshoot, and commission PLC- and HMI-based control systems utilizing RSLogix 500, RSLogix 5000, Studio 5000, and FactoryTalk View platforms.
NewSenior Python Full Stack Engineer Vaco LLCSenior Python Full Stack EngineerMcLean, VA$130,000–$150,000Determining compensation for this role (and others) at Vaco by Highspring depends upon a wide array of factors including but not limited to: the individual’s skill sets, experience and training; licensure and certification requirements; office location and other geographic considerations; other business and organizational needs. Vaco by Highspring values a diverse workplace and strongly encourages women, people of color, LGBTQ+ individuals, people with disabilities, members of ethnic minorities, foreign-born residents, and veterans to apply.
NewSpecialist, Software Engineer (Embedded Software) L3Harris TechnologiesSpecialist, Software Engineer (Embedded Software)Herndon, VAWith customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security. L3Harris Technologies is an agile global aerospace and defense technology innovator, delivering end-to-end solutions that meet customers’ mission-critical needs.
Network Engineer MANTECHNetwork EngineerJoint Base Andrews, MDOccasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and or virtual communication, which may involve delivering presentations. High School Diploma or GED with 7+ years of progressively responsible experience in Network Engineering, Network Analysis, or a related technical discipline.
NewIT - Systems Engineer II PlanIT GroupIT - Systems Engineer IIWashington, DCThe selected candidate needs to have the necessary skills to provide technical assistance at the customer's physical premises to install, move, troubleshoot, repair, modify, and assist with any issue that may arise with telecommunications and related equipment, wiring, circuits, connections, as well as supporting networking and telephone/data communication services. Responsibilities:Overseeing the day-to-day activities related to installation, verification and maintenance of telecommunications equipment, network ports, ethernet and optical Fiber cabling, IP networks.
NewSpecialist, Systems Engineer - Watch Officer L3Harris TechnologiesSpecialist, Systems Engineer - Watch OfficerSpringfield, VA$90,500–$168,500 / yearActively participate in daily operations stand-up meetings to provide updates on ongoing activities, highlight key operational priorities, and address any challenges or risks impacting mission success. Possess knowledge of, or experience with, space operations, including managing and monitoring satellite systems, performing telemetry analysis, and conducting mission-critical activities such as orbital adjustments, payload operations, and anomaly resolution.
NewNetwork Development Engineer LeidosNetwork Development EngineerArlington, VA$59,150–$106,925Bachelor’s degree in engineering or related field with 2+ years of prior relevant experience or a master’s degree with at least a year experience in one of these areas: computer engineering, software engineering, test engineering or related field. A Network Development Engineer (NDE) designs, builds, and automates large-scale data networks, focusing on scalability, reliability, and performance.
NewNetwork Storage Engineer System OneNetwork Storage EngineerWashington, DC$64–$64 / hourMaintain reliable, secure, and high-performing SAN network operations across enterprise data center services and storage-dependent platforms. Provide senior-level administration and engineering support for SAN fabric infrastructure and core network connectivity supporting the SEC ISS environment.
NewSenior Network Engineer CCNP System OneSenior Network Engineer CCNPAlexandria, VA$180,000–$210,000 / hourProvide executive-level government agency support related to designing, deploying, and ensuring efficient and optimal operation of business-critical enterprise and network environments. Translate stakeholder and Government requirements into network solutions, modifications, and support upgrades (network reconfiguration, hardware and software acquisitions, installation, and testing).
AWS Cloud Network Engineer System OneAWS Cloud Network EngineerMcLean, VARemoteResponsibilitiesDesign, implement, and manage secure, scalable network infrastructure across on-premises and AWS cloud environments, applying cloud networking best practices to support connectivity, interoperability, and operational performance. Knowledge of cloud networking and routing including VPCs, subnetting, security groups, route tables, peering connections, Direct Connect, IPv4, IPv6, VPN, firewalls, Route 53, MTIPS, and IPsec.
Manufacturing Engineer II (VA) GCR Professional ServicesManufacturing Engineer II (VA)Chantilly, VirginiaContractorYou will collaborate with cross-functional teams, including design engineers, production personnel, and quality assurance, to optimize manufacturing operations and drive continuous improvement initiatives. As a Manufacturing Engineer, your primary responsibility will be to develop and improve manufacturing processes and systems to ensure the efficient and cost-effective production of defense and aerospace products.
NewSenior Specialist, Systems Engineer - User Acceptance Tester L3Harris TechnologiesSenior Specialist, Systems Engineer - User Acceptance TesterSpringfield, VAPlease click here for the E-Verify Poster in English or Spanish. The successful candidate will support a high performing team of Government and Contractor professionals by testing software releases to ensure they function correctly, documenting failed test cases, and documenting any changes or updates needed to existing procedures.
New(DoD SkillBridge), Specialist, Integration & Test Engineer L3Harris Technologies(DoD SkillBridge), Specialist, Integration & Test EngineerHerndon, VAPlease click here for the E-Verify Poster in English or Spanish. BS/BA (or equivalent) in Optical, Electrical, Computer Engineering, Computer Science, Information Technology or related field, and minimum 6 years Software or systems experience or Graduate’s degree and 4 years software or systems experience.
Senior Network Engineer (CCIE) – Wireless SME System OneSenior Network Engineer (CCIE) – Wireless SMEAlexandria, VA$170,000–$240,000 / yearThe Senior Network Engineer, Wireless SME provides expert-level engineering, architecture, and operational support across enterprise and tactical networks, with specialized responsibility for secure, enterprise-grade wireless infrastructure. Deep expertise with enterprise wireless networking, RF design, wireless LAN controllers, access point deployments, and Wi-Fi troubleshooting.
NewSenior Specialist, Integration & Test Engineer L3Harris TechnologiesSenior Specialist, Integration & Test EngineerChantilly, VAPlease click here for the E-Verify Poster in English or Spanish. Experience explaining complex technical topics to different audiences, whether that's fellow engineers, program managers, or customer leadership.
NewSenior Platform Engineer System OneSenior Platform EngineerWashington, DCWe're seeking a talented Platform Engineer to help architect, deploy, and manage our AWS and on-premises platforms while supporting emerging AI capabilities, modern containerized workloads, and enterprise virtualization environments. • Manage Kubernetes fleet operations across AWS EKS, on-premises Mirantis Kubernetes Engine (MKE), and VMware vSphere with Kubernetes (VKS).
NewSystem/DevSecOps Engineer NuAxis InnovationsSystem/DevSecOps EngineerWashington DC, DCThis role collaborates with Product Owners, Federal Project Managers (FPMs), Business Analysts, Solution Architects, UX/UI Designers, QA Engineers, and DevSecOps teams to deliver end-to-end solutions across the full software development lifecycle. The Senior Full Stack Developer is responsible for designing, developing, integrating, and supporting secure, scalable, and high-performing enterprise web applications using modern cloud-native technologies.
NewLead Security Systems Technician Active Security Consulting LLCLead Security Systems TechnicianDulles, VAActive Security designs, develops, implements, and sustains advanced C5ISR and security solutions to enhance defense and mission capabilities, addressing threats across physical, electronic, cyber, and communications security for commercial and U.S. Government clients. Technical Leadership: Perform complex troubleshooting and diagnostics, including advanced programming and system integration tasks, independently and collaboratively resolving complex issues on-site.
NewCloud Engineer System OneCloud EngineerReston, VARemoteThis role ensures the scalability, reliability, and security of cloud environments while collaborating with cross-functional teams to deliver robust technical solutions. Ideal candidates have hands-on experience with AWS, Azure, or GCP, strong scripting skills, and a solid understanding of DevOps practices and containerization tools like Docker and Kubernetes .
Lead Systems Engineer - AWS Cloud System OneLead Systems Engineer - AWS CloudReston, VA$109.05–$109.05 / hourMentor junior and senior team members, install, tune, upgrade, troubleshoot, and maintain all relevant computer systems including OS administration, user management, and networking. Implement risk and opportunity management plans, assess risks, develop mitigation and disaster recovery plans, and oversee engineering project planning and execution.
AWS Cloud Platform Engineer System OneAWS Cloud Platform EngineerMcLean, VARemoteDevelop and maintain cloud platform services and landing zones, including networking, identity, compute, and storage components. System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America.
NewSenior VMware & Data Center Engineer System OneSenior VMware & Data Center EngineerWashington, DCDemonstrated experience ensuring the reliability, scalability, and efficiency of data center operations, including servers, storage, networking, power, and environmental resource requirements. Use enterprise data center technologies to manage and operate servers, storage, networking, and power systems supporting mission-critical environments within the federal government.
NewJava Software Engineer III - 3 slots System OneJava Software Engineer III - 3 slotsDunn Loring, VARemote$50–$70 / hourSystem One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. ResponsibilitiesEnsure compatibility between equipment and software, analyze operational and system requirements, support design reviews, and present technical briefings.
Storage Engineer The Computer Merchant, LtdStorage EngineerWashington, DC$58–$62 / hourContractorWhile an hourly range is posted for this position, an eventual hourly rate is determined by a comprehensive salary analysis which considers multiple factors including but not limited to: job-related knowledge, skills and qualifications, education and experience as compared to others in the organization doing substantially similar work, if applicable, and market and business considerations. This role architects, implements, and sustains highly available storage platforms supporting mission-critical SEC workloads across primary, alternate, and regional environments.
NewAWS Cloud Infrastructure Engineer System OneAWS Cloud Infrastructure EngineerMcLean, VAThe ideal candidate will have strong hands-on experience with AWS infrastructure, Terraform/IaC, CI/CD pipelines, scripting, secure cloud operations, monitoring/logging, and compliance-aligned engineering practices. Working knowledge of cybersecurity best practices, secure cloud configurations, zero-trust concepts, and compliance frameworks such as NIST, CIS, or ISO 27000.
AWS Cloud Data Engineer System OneAWS Cloud Data EngineerMcLean, VARemotePartner with AWS Cloud DBAs and cross-functional teams to migrate data from legacy applications to AWS while ensuring performance, reliability, and security. Bachelor’s degree in Computer Science, Data Engineering, or a related field; four additional years of relevant experience may be substituted for a degree.
NewSenior Full Stack Engineer - Contract TalentBurst, Inc.Senior Full Stack Engineer - ContractReston, VARemoteThe candidate should have hands-on experience building scalable web applications, implementing automated testing frameworks, working in Agile teams, and contributing across the full software development lifecycle. Collaborate with Product Managers, UX Designers, QA Engineers, and Software Developers throughout the development lifecycle.
Senior System Engineer ARCTICOM LLCSenior System EngineerQuantico, VARemoteul>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.
NewSenior Data Engineer - Palantir Sparks GroupSenior Data Engineer - PalantirMcLean, VAYou’ll work with and guide a multi-disciplinary team of analysts, data engineers, developers, and data consumers in a fast-paced, agile environment. 3+ years of experience designing, developing, operationalizing, and maintaining data applications for reporting and analytics at enterprise scale.
NewSr. Network Engineer LeidosSr. Network EngineerOdenton, MD$92,300–$166,850April 23, 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.12345678910Similar Job SearchesSecurity Manager Jobs in Falls Church, VASecurity Engineer Jobs in Mclean, VASecurity Engineer Jobs in Tysons, VASecurity Engineer Jobs in Arlington, VASecurity Engineer Jobs in Alexandria, VA