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Network Security Jobs in Triangle, VA

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Senior Security Engineer-Network Security Assessment & Post-Quantum Cryptography (PQC) - Hybrid ATD Technology LLC

Suitland, MD

$180,000–$230,000
Quick Apply

Analyze cryptographic implementations key-exchange, digital-signature, and cipher-suite selections; certificate and PKI dependencies; key management and HSM integration; and FIPS 140-2/140-3 validated modules to identify components that rely on quantum-vulnerable public-key algorithms (RSA, Diffie-Hellman, ECDH, ECDSA). Assess the impact of PQC requirements on network implementations, including larger keys and signatures affecting packet size, fragmentation, MTU, and handshake latency; hardware, ASIC, and crypto-accelerator constraints; hybrid key-establishment options; and certificate-chain and protocol interoperability.

1 day ago

Network Security Engineer Twitter

Washington, DC

$100,000–$258,000 / year

Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. ITAR REQUIREMENTS: To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State.

9 days ago

Network Engineer – VDI Security / Network Infrastructure TalentOps

Chantilly, Virginia

This 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.

30+ days ago

Cisco Network Security Engineer/ Senior Consultant Deloitte

Washington, DC

$105,400–$207,800 / year

3+ years of experience with Cisco Identity Services Engine (ISE) 802.1X Network Access Control (NAC), guest lifecycle management, profiling policies, TrustSec segmentation, and Cisco Firepower capabilities including intrusion prevention system (IPS), malware protection, Uniform Resource Locator (URL) filtering, Domain Name System (DNS)-based security, Secure Sockets Layer/Transport Layer Security (SSL/TLS) decryption, and cloud firewall deployments in Amazon Web Services (AWS), Microsoft Azure, or Google Cloud Platform (GCP). 5+ years of experience designing, deploying, and managing Cisco Firepower Threat Defense (FTD) and Firepower Management Center (FMC) in enterprise environments, including physical appliances, virtual instances, and cloud-delivered Firewall Management Center (cdFMC).

13 days ago

Network Security Engineer SpaceXSI

Washington, DC

$100,000–$258,000 / year

Our teams are building the full Super Intelligence stack: from our Colossus supercomputers, to Grok models, to our suite of applications, including Grok Bot, Grok Build, Grok Imagine, Grok Voice, and X. To conform to U.S. Government export regulations, applicant must be a (i) U.S. citizen or national, (ii) U.S. lawful, permanent resident (aka green card holder), (iii) Refugee under 8 U.S.C. § 1157, or (iv) Asylee under 8 U.S.C. § 1158, or be eligible to obtain the required authorizations from the U.S. Department of State.

Today

Cyber Network Security Architecture - Senior Manager Deloitte

Mclean, VA

$163,400–$322,100 / year

8+ years of experience in the design and architecture of enterprise-level technical stacks, including VPNs, CDN solutions, Load Balancers, Subnetting, Next-Generation firewall design, and highly scalable security solutions like Secure Access Service Edge (SASE) technologies. Our purpose comes through in our work with clients that enables impact and value in their organizations, as well as through our own investments, commitments, and actions across areas that help drive positive outcomes for our communities.

17 days ago

Sr. Network Security Engineer III (6852) MetroStar Systems

Washington, DC

$207,000–$320,000 / year

Demonstrated subject matter expertise designing, implementing, and managing next-generation firewalls, VPN solutions, intrusion prevention systems, and network access control platforms. Our team is responsible for designing, operating, and hardening complex security environments, and you'll play a critical role in strengthening, scaling, and protecting these environments while enabling secure mission delivery across the organization.

19 days ago

5Yrs Senior Network Security Engineer with cisco exp - Onsite GoIntellects

Washington, District of Columbia

$50–$55 / hour

Job Type: Full-time Experience: Bachelor’s degree in IT or related field or equivalent: 4 years (Preferred). install, maintenan of n/w systems including LANs, WANs: 4 years (Preferred).

17 days ago

Network Security Engineer (Firewall & Vulnerability Management) Peraton

Washington, D.C.

$135,000–$216,000 / year
Full time

Serving as the single dedicated technical engineering resource , the selected candidate will independently execute ten security improvement projects spanning vulnerability management, endpoint protection, patch management, firewall and network security, identity and access management, and security governance. Responsibilities extend beyond identifying vulnerabilities and recommending corrective actions to directly implement approved security configuration changes, executing technical remediation, optimizing security platforms, and delivering measurable improvements to the organization's security posture.

1 day ago

Security Operations Center (Soc) Network Engineer/Systems Integrator - Secret Clearance - Naples, Italy Deloitte

Rosslyn, VA

$113,000–$188,400 / year

This position will eventually roll into a SOC Analyst position which requires a familiarity with Network monitoring tools, Windows, and Linux operating systems (OS) mechanics including filesystem structures, disk and memory forensics, cyber aware Operational Technology or Control Systems operators, commonly used mechanisms for maintaining security persistence, privilege escalation, and lateral data movement, operating system log analysis, and triaging suspicious file artifacts for unusual behavior. Our Hybrid Cloud Infrastructure offering provides specialized engineering capabilities to design, implement, manage, and operate hybrid cloud environments, modernize networks and AI infrastructure from the core to the edge, and incubate new infrastructure and device services to help clients stay ahead with the latest technology advances.

19 days ago

Counsel, Consumer Protection and Network Security Policy Verizon Communications Inc

Washington, DC

$161,000–$280,000 / year

Verizon seeks a technically-sophisticated attorney to join its policy organization's Regulatory Affairs team, which handles advocacy efforts across jurisdictions on various issues, including infrastructure, cybersecurity, privacy, artificial intelligence, public safety, transactions, net neutrality, consumer protection, and wireless spectrum. This position will focus on government policy initiatives relating to robocalls/robotexts, fraud/scam mitigation, network security/resilience, and consumer protection, including Telephone Consumer Protection Act issues.

27 days ago

Senior Network Resident Engineer – Enterprise Security & Switching (Top Secret) Jobot

Alexandria, VA

$140,000–$190,000 / year
Quick Apply

Information 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. You'll support client engineers on new deployments, act as the primary contact for operational issues, troubleshoot firewall, routing, and switching problems, and work cases with the manufacturer's support center through to resolution.

6 days ago

Deputy Network Operations Security Center (NOSC) Manager Leidos

Fort Belvoir, Virginia

The I3TS program provides enterprise-wide IT support to enable the Defense Threat Reduction Agency’s (DTRA) Information Management & Technology Directorate (J6) 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. September 3, 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.

2 days ago

Network Security Systems Instructor IV OBXtek Inc

Springfield, VA

4+ years of technical skills and experience of installing, programming, troubleshooting, and repairing any of the following Network Security Systems: command line interface-based IT equipment, electronic systems, IoT devices, network-based CCTV, computer network equipment, installation of infrastructure, copper and fiber optic communication and signal wiring, enterprise managed networking hardware, and software configuration. The instructor must be an excellent communicator and possess solid technical skills in any of the following Network Security Systems (NSS) disciplines: High-Definition Security Video Systems, Data Center Configuration and Management, or Cyber Security Countermeasures.

6 days ago

Data Analyst (Network Security) Noblis

Washington, Washington, DC

$115,500–$180,525 / year
Full time

Compensation at Noblis is determined by various factors, including but not limited to, the combination of education, certifications, knowledge, skills, competencies, and experience, internal and external equity, location, clearance level, as well as contract-specific affordability, organizational requirements and applicable employment laws. The ideal candidate will have experience working with network and security data, using scripting languages and advanced Excel capabilities to identify anomalies, validate information accuracy, and support cybersecurity decision-making.

1 day ago

Senior Network Security Engineer Foris DAX MT Ltd

Washington, DC

$120,000–$150,000 / year

Maintain Multi-Vendor Security & Perimeter Solutions: Responsible for the configuration, maintenance, and optimization of FortiGate Firewalls (On-Prem & AWS), Cisco ASA Firewalls, and Akamai WAF / Anti-DDoS solutions protecting core endpoints. Responsibilities: Act as Escalation Point of Contact: Serve as the primary Level 3 escalation point for resolving complex network infrastructure, routing, and security configuration issues across both on-premise Data Centers and AWS environments.

26 days ago

Network Infrastructure Security Engineer AHU Technologies

Washington, District of Columbia

Monitor security measures in place within network perimeter, ensuring breaches do not occur and information is safeguarded from unauthorized access; Proactively oversee the activities involved in quality resolution of complex technical issues, responding with an appropriate sense or urgency to problems escalated to Network Engineer’s level; Coordinate with appropriate personnel to determine positive solutions that increase end user satisfaction, following through to completion, and communicating resolution results; escalate to management any situation that could adversely impact the service provided to the end user; Monitor trends in documented incidents and determine appropriate actions necessary to eliminate future occurrences and improve customer service levels in an appropriate timeframe; Provide network design services. Coordinate with the Infrastructure Services Group staff to establish the scope, timing and technical approach to be used for proposed network changes; Ensure adherence to network policies and procedures; Manage production and disaster recovery networks and security.

30+ days ago

Network Security Engineer Booz Allen Hamilton Inc.

Dahlgren, VA

$69,300–$158,000 / year

We need your experience to develop and implement security solutions that will allow our armed forces to administer modern technologies on tactical and deployed systems in a way that is safe, secure, and hardened while still allowing the overwhelming efficiency that is required for mission success. On our team, you'll troubleshoot and analyze complex challenges for customers using your knowledge of network and cyber security best practices, as well as tools and scripting techniques to automate tasks and improve efficiencies.

25 days ago

Network Security Engineer Agile Defense

Suitland, Maryland

$100,000–$115,000 / year

Eight (8) years of experience in a large government organization with five (5) years in technical leadership, including four (4) years implementing and troubleshooting Cisco ISE with expertise in:o Authentication and authorization policies (RADIUS/TACACS+)o 802.1X/EAP methods for wireless and wired accesso Device profiling, posture checks, and endpoint complianceo Certificate based authentication (EAP TLS) and PKI integrationo AAA integrations for switches, appliances, firewalls, and wireless controllers. Deploy, configure, and maintain Cisco ISE components, including:o Policy Sets, Authorization Profiles, and Authentication Ruleso TACACS+ device administrationo 802.1X for wired and wireless networkso Profiling, posture, and compliance policieso Certificate based authentication and PKI integrations.

30+ days ago

Cyber Palo Alto Networks Security Engineer/ Senior Consultant, Strategy, Growth, And Transformation Deloitte

Mclean, VA

$105,400–$207,800 / year

Configuring and tuning security capabilities including Threat Prevention, intrusion prevention system/intrusion detection system (IPS/IDS), Anti-Spyware, Antivirus, WildFire, Domain Name System (DNS) Security, and Secure Sockets Layer/Transport Layer Security (SSL/TLS) decryption policies. Experience integrating Palo Alto Firewalls and Prisma with SIEM/SOAR platforms (e.g., Splunk, Microsoft Sentinel, Palo Alto XSOAR) via log streaming, API connectors, or syslog for threat detection and incident response workflows.

30+ days ago

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Network Security Jobs in Triangle, VA

Senior Security Engineer-Network Security Assessment & Post-Quantum Cryptography (PQC) - Hybrid ATD Technology LLC

Network Security Engineer Twitter

Network Engineer – VDI Security / Network Infrastructure TalentOps

Cisco Network Security Engineer/ Senior Consultant Deloitte

Network Security Engineer SpaceXSI

Cyber Network Security Architecture - Senior Manager Deloitte

Sr. Network Security Engineer III (6852) MetroStar Systems

5Yrs Senior Network Security Engineer with cisco exp - Onsite GoIntellects

Network Security Engineer (Firewall & Vulnerability Management) Peraton

Security Operations Center (Soc) Network Engineer/Systems Integrator - Secret Clearance - Naples, Italy Deloitte

Counsel, Consumer Protection and Network Security Policy Verizon Communications Inc

Senior Network Resident Engineer – Enterprise Security & Switching (Top Secret) Jobot

Deputy Network Operations Security Center (NOSC) Manager Leidos

Network Security Systems Instructor IV OBXtek Inc

Data Analyst (Network Security) Noblis

Senior Network Security Engineer Foris DAX MT Ltd

Network Infrastructure Security Engineer AHU Technologies

Network Security Engineer Booz Allen Hamilton Inc.

Network Security Engineer Agile Defense

Cyber Palo Alto Networks Security Engineer/ Senior Consultant, Strategy, Growth, And Transformation Deloitte

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