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Network Security Jobs in Ashburn, VA

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Endpoint Security Engineer III - Nessus CACI International Inc

Springfield, VA

$75,200–$158,100 / year

Working knowledge of maintaining Enterprise Cyber Security Engineering requirements utilizing all or some of the following tools: Tenable Suite that include Security Center, Nessus Scanners, Nessus Manager with hands-on administrator experience. Pay Range: There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications.

30+ days ago

Senior Cloud Platform Security Engineer CoStar Group Inc

Arlington, VA

Cloud Security and Guardrails: Enforce security posture across AWS, GCP, and Azure through preventative controls (SCPs, organization policies, IAM guardrails) and detective controls (Wiz, native cloud security services). Our product platform security engineering group builds and operates centralized controls using infrastructure as code, scripting, and API integrations to scale security across all web applications in a consistent manner.

30+ days ago

Information System Security Engineer Markon Solutions

Chantilly, VA

$150,000–$180,000 / year

Develop and maintain cybersecurity documentation supporting RMF and Assessment & Authorization (A&A) activities, including System Security Plans (SSPs), Security Assessment Reports (SARs), Plans of Action and Milestones (POA&Ms), risk assessments, and related artifacts. Our growing reach extends across 17 states, 116 countries, and 5 continents, where our team of dynamic professionals collaborates to deliver unparalleled program and project management services.

30+ days ago

Information System Security Engineer Markon

Chantilly, Virginia

$150,000–$180,000 / year
Full time

30+ days ago

Security Engineer (Infrastructure) gTANGIBLE Corporation

Arlington, Virginia

Maintains and stays current with in-depth technical knowledge of operating system security testing tools in use by the Information Assurance & Cybersecurity Division ( IAD ) , and testing techniques in general, to perform automated security testing, manual validation of automated results, and manual configuration validation of items not covered by automated testing, of operating systems on servers, workstations, appliances, and other similar assets. The Secur ity En gineer (Infrastructure) supports this Transportation Security Administration Information Technology (TSA IT) Task Order (TO) by conducting Infrastructure Security Testing to include Operating System (OS), database, Network Fabric assets and Wireless Communications.

30+ days ago

Network Architect SME Ignite IT

Washington, DC

Quick Apply

Support implementation, testing, migration, and stabilization, and troubleshoot complex cross-domain problems, communicating root cause, options, and corrective actions. Demonstrated experience producing technical network designs and supporting implementation, testing, troubleshooting, and operational transition.

30+ days ago

Network & Cloud Engineering Intern Commonwealth of Virginia

Fairfax, VA

Preferred Qualifications: Coursework, labs, projects, or certifications involving AWS, Azure, Cisco networking, Linux, Python, PowerShell, Terraform, or cybersecurity; CompTIA Network+, Security+, AWS Cloud Practitioner, Cisco CCST/CCNA, or progress toward a comparable credential; Experience with a help desk, student technology team, research lab, makerspace, internship, military service, or technical student organization; and. Working under the direction of the Network & Cloud Engineer or another designated technical lead, the intern gains applied experience with enterprise networking, cloud administration, cybersecurity, monitoring, documentation, and technical customer support.

30+ days ago

Senior Information Systems Security Officer (ISSO) Quantum Sky

Washington, Washington, DC

$135,000–$150,000 / year
Full time

Strong written and verbal communication skills with experience developing technical documentation, presenting complex security and privacy concepts to technical and non-technical audiences, and building trusted relationships with Contracting Officer Representatives (CORs), government leadership, and cross-functional stakeholders. Develop, maintain, and present security authorization packages and supporting documentation in accordance with client requirements and NIST SP 800-53, including SSPPs, RARs, SAPs, SARs, POA&Ms, contingency and incident response plans, SOPs, configuration management plans, STIG deviations, and related artifacts.

11 days ago

Senior Applied Scientist, Leo Security Amazon.com Inc

Herndon, VA

The Engineering and R\&D team within this organization builds the platforms and tooling the security pillar teams operate on, moving security operations from manual triage to correlation-based detection, automated response, and agentic AI. Design and implement scalable, production-grade neurosymbolic systems that integrate symbolic reasoning over graph-based knowledge representations with LLM agents to deliver reliable, verifiable security outcomes.

10 days ago

Data Center Security Specialist, AMER East, AWS DC Security-VAR Amazon.com Inc

Manassas, VA

We pioneered cloud computing and never stopped innovating - that's why customers from the most successful startups to Global 500 companies trust our robust suite of products and services to power their businesses. We support all AWS data centers and all of the servers, storage, networking, power, and cooling equipment that ensure our customers have continual access to the innovation they rely on.

6 days ago

Security Analyst [U.S. Citizenship, Secret or Top Secret Clearance Required] Via Logic

Ashburn, Virginia

pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]"> About Via Logic. Via Logic LLC is an information technology partner supporting mission-driven work across DevSecOps, cloud engineering, cybersecurity, data science, and national security analytics for federal and commercial clients.

29 days ago

Global Program Manager, Data Center Safety, Security, and Environmental Amazon.com Inc

Herndon, VA

You"ll work closely with Learning Experience Design (LXD), Training Operations, regional Cluster Security Managers (CSMs), and field contributors to scale training that is measurably effective. You"ll design, deliver, and continuously improve blended training programs that build capability across Data Security Managers (DSMs) and field teams spanning AMER, APJC, and EMEA.

30+ days ago

Advanced Security System Engineering Manager, ASSET, DC Security- ASSET Amazon.com Inc

Herndon, VA

We pioneered cloud computing and never stopped innovating - that's why customers from the most successful startups to Global 500 companies trust our robust suite of products and services to power their businesses. You'll join a diverse team of software, hardware, and network engineers, supply chain specialists, security experts, operations managers, and other vital roles.

6 days ago

Security Installation Technician UNLIMITED TECHNOLOGY, INC.

Herndon, VA

As a Technician, the successful candidate will need to be hard-working, detail-oriented, highly organized and able to work independently to maintain security hardware in the client's and Unlimited Technology's best interests. We secure the facilities and networks of the world's leading brands and critical infrastructure and are recognized leaders in the physical and IT security, cyber, and managed services industries.

30+ days ago

Applied Scientist, Leo Security Amazon.com Inc

Herndon, VA

Build behavioral and statistical models that baseline normal activity across heterogeneous security telemetry, including specialized industrial-control and factory-floor data sources, so detections extend to new environments with low false-positive rates. The data is unlike anything you have worked with: badge and door-access events, asset movement, network telemetry, and industrial control signals from factories, ground stations, and launch facilities, all of which must be modeled, baselined, and defended.

10 days ago

Lead Security Technician UNLIMITED TECHNOLOGY, INC.

Herndon, VA

30 days ago

Data Center Security Specialist, AMER East Amazon.com Inc

Ashburn, VA

22 days ago

Microsoft Security Active Directory Senior Consultant Deloitte Touche Tohmatsu Ltd

McLean, VA

$105,400–$207,800 / year

Performing and overseeing Active Directory assessments covering domain and forest architecture, domain controllers, Sites and Services, Domain Name System (DNS), Dynamic Host Configuration Protocol (DHCP), replication, trusts, Group Policy, privileged groups, service accounts, authentication protocols, and administrative processes. Experience with enterprise Active Directory services, including domain and forest architecture, domain controllers and replication, DNS, DHCP, Sites and Services, Group Policy, trusts, service accounts, Lightweight Directory Access Protocol (LDAP), and domain or forest recovery.

28 days ago

Network Engineer IV PDS Inc, LLC

Arlington, VA

$80–$85 / hour
Quick Apply

Candidates should also have had significant past experience with, and expertise in many of the following protocols & technologies: DWDM, T1/DS1, DS3, SONET (OC3, OC48), 802.2/3, 802.1d VLANs/STP, IPv4 & IPv6, TCP (internals & flow control), BGP, OSPF, HSRP/GLBP, PIMv2, IGMP, LDP, TACACS, IPSEC & VPNs, Netflow, DNS, HTTP. Experience with the rollout and operations of large DWDM networks and Optical network technologies.

30+ days ago

Security Control Assessor (SCA) Huntington Ingalls Industries Inc

Springfield, VA

$102,831–$150,000 / year

Engineer Info Assurance 3: 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. When extending an offer, HIIs Mission Technologies division takes a variety of factors into consideration which include, but are not limited to, the roles function and a candidates education or training, work experience, and key skills.

30+ days ago

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Network Security Jobs in Ashburn, VA

Endpoint Security Engineer III - Nessus CACI International Inc

Senior Cloud Platform Security Engineer CoStar Group Inc

Information System Security Engineer Markon Solutions

Information System Security Engineer Markon

Security Engineer (Infrastructure) gTANGIBLE Corporation

Network Architect SME Ignite IT

Network & Cloud Engineering Intern Commonwealth of Virginia

Senior Information Systems Security Officer (ISSO) Quantum Sky

Senior Applied Scientist, Leo Security Amazon.com Inc

Data Center Security Specialist, AMER East, AWS DC Security-VAR Amazon.com Inc

Security Analyst [U.S. Citizenship, Secret or Top Secret Clearance Required] Via Logic

Global Program Manager, Data Center Safety, Security, and Environmental Amazon.com Inc

Advanced Security System Engineering Manager, ASSET, DC Security- ASSET Amazon.com Inc

Security Installation Technician UNLIMITED TECHNOLOGY, INC.

Applied Scientist, Leo Security Amazon.com Inc

Lead Security Technician UNLIMITED TECHNOLOGY, INC.

Data Center Security Specialist, AMER East Amazon.com Inc

Microsoft Security Active Directory Senior Consultant Deloitte Touche Tohmatsu Ltd

Network Engineer IV PDS Inc, LLC

Security Control Assessor (SCA) Huntington Ingalls Industries Inc

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