5,032 Results for

Network Security Jobs in Springfield, VA

Jobs

Open Talent Network: Senior Network/Security Engineer Ad Hoc

Mc Lean, VA

Remote

$153,000–$187,000 / year

We partner with these agencies to build new capabilities, deliver products, establish data as a strategic asset for informed decision-making, modernize legacy systems, and build the digital service infrastructure necessary to scale their mission impact. Experience with Palo Alto, panorama OS (PAN-OS), Firewalls, SIEM, Security Configuration Management (SCM), migration, security and compliance, RBAC and access models, Data Loss Prevention (DLP), Strata Cloud Manager.

30+ days ago

Network Security Engineer (Firewall & Vulnerability Management) - Enterprise Firewall Engineering/Check Point, Endpoint Security Administration 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.

3 days ago

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.

3 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

Sr. Network Engineer (Cisco & Network Security) Themis Insight

Fort Meade, MD

Provides assistance in all aspects of network management from network design through implementation, maintenance, and upgrading of existing networks; Analyzes design, specifications, and related documents; Implements communication system requirements to support the distributed functionality of a software engineering environment; Analyzes network characteristics (e.g. Implement specific network solutions to support server requirements to include load-balancing, VPN's, firewall contexts, Traffic Shapping Voice over IP (VOIP), GRE Tunneling, IP Security (IPSec) IP Encryption and Media over IP (MoIP), and network address translation (NAT) where appropriate.

14 days ago

Networking Security Engineer (R-00236) True Zero Technologies

Ashburn, VA

Full time

PWS minimum certifications: CompTIA Security+ and Network+; Cisco CCST Networking or Cybersecurity or CCENT; Palo Alto PCCSA; Juniper JNCIA-Junos; and AWS Cloud Practitioner. Our culture and commitment have been recognized through numerous accolades, including being named one of the Best Places to Work in 2023 in two categories (“Prosperous and Thriving” ($5MM–$50MM in gross revenue) and “Mid-Atlantic Region” (DC, DE, MD, NC, VA, WV)), and again in 2025 as a Best Places to Work honoree.

7 days ago

Senior Network Security Engineer :: Bethesda, MD (Remote) ARK SOLUTIONS, INC

Bethesda, MD

Remote

Seeking for a Senior Network Security Engineer to design and implement next-gen firewall management solutions for our global networks, ensuring compliance and security at every level. Proficiency in installing, configuring, and troubleshooting firewall management tools (e.g., Palo Alto Panorama, Firemon, Checkpoint MDS).

29 days ago

Senior Network Security Engineer CACI

Columbia, Maryland

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. We’re looking for an experienced Senior Network Security Engineer who is ready to bring deep technical expertise, curiosity, and a commitment to excellence to our high‑impact programs.

30+ days ago

Network Security Engineer CACI

Columbia, Maryland

30+ days ago

Sr Security Engineer, Network, Leo Security Amazon.com Inc

Arlington, VA

When you"re not responding to active events, you will be evaluating Leo"s network security posture end-to-end: identifying architectural weaknesses, proposing new detection initiatives, and driving cross-team programs that raise the bar across every site type. Amazon Leo is a constellation of Low Earth Orbit satellites that will provide low-latency, high-speed broadband network connectivity to unserved and underserved communities around the world.

30+ days ago

Networking Security Engineer II CACI

Columbia, Maryland

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. Bachelor’s degree in Communications Engineering, Computer Engineering, Computer Science, Electrical Engineering, Information Systems, Mathematics, or related disciple from an accredited college or university is required.

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.

3 days ago

Cloud Network Security Engineer Revolutional, LLC

Washington, DC

$175,000–$200,000 / year

As a Cloud Network Security Engineer you will: Configure and maintain core hybrid and multi-cloud networking components, virtual networks, gateways, and site-to-site or dedicated circuit connections (e.g., Azure VNets/ExpressRoute/Virtual WAN, AWS VPCs/Transit Gateways), along with DNS, IP address management, load balancing, and private connectivity to platform services. This is a senior, hands-on ownership role: the engineer will serve as the primary technical bridge between the customer's on-premises network team and Revolutional's cloud/platform team, taking day-to-day responsibility for configuration, troubleshooting, firewall policy, and lifecycle management of hybrid, multi-cloud network infrastructure.

30+ days ago

Sr Network Security Specialist, Leo Security Amazon.com Inc

Herndon, VA

1 day ago

Principal Network Security Engineer Leidos Holdings Inc

Odenton, MD

$116,350–$210,325 / year

The successful candidate serves as a technical leader and subject matter expert - assessing the current security architecture, defining the controls and segmentation model the enterprise needs, building practical implementation plans with realistic risk and rollback provisions, and directing a team of engineers to deliver them under aggressive timelines. Duties include providing specifications for network security architecture, evaluating and recommending new technologies to enhance current capabilities, performing needs assessments, and directing the installation, configuration, testing, and tuning of network security infrastructure.

21 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).

15 days ago

Cyber Palo Alto Networks Security Engineer/ Senior Consultant, Strategy, Growth, and Transformation Deloitte Touche Tohmatsu Ltd

Washington, DC

$105,400–$207,800 / year

30+ days ago

Cyber Zscaler Network Security Engineer / Senior Consultant, Strategy, Growth, And Transformation Deloitte

Mclean, VA

$105,400–$207,800 / year

1+ years of experience designing, deploying, and managing Zscaler Cloud Connector, including deployment within cloud environments (AWS, Azure, and/or GCP), workload-to-internet and workload-to-workload traffic inspection, and integration with cloud-native networking constructs (e.g., VPCs, VNets, Transit Gateways). 5+ years of hands-on experience designing, deploying, and managing Zscaler Private Access (ZPA), including application segment configuration, access policies, connector deployment, and zero trust network access (ZTNA) architectures replacing legacy VPN infrastructure.

3 days ago

Network Security Engineer Guidepoint Security LLC

Silver Spring, MD

Network Security Engineers interact daily with a wide variety of industry leading network security products including, but not limited to, firewalls, Intrusion prevention systems, full packet capture solutions, mail gateways, advanced malware defense systems, and TLS inspection solutions. With more than 800 vetted technology vendor partnerships and deep practitioner expertise across every major cybersecurity domain, GuidePoint serves more than half of the U.S. Government's cabinet-level agencies across Civilian, DoD, and Intelligence Community segments, as well as Federal System Integrators and major defense prime contractors.

30+ 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

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Network Security Jobs in Springfield, VA

Open Talent Network: Senior Network/Security Engineer Ad Hoc

Network Security Engineer (Firewall & Vulnerability Management) - Enterprise Firewall Engineering/Check Point, Endpoint Security Administration Peraton

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

Network Security Engineer Agile Defense

Sr. Network Engineer (Cisco & Network Security) Themis Insight

Networking Security Engineer (R-00236) True Zero Technologies

Senior Network Security Engineer :: Bethesda, MD (Remote) ARK SOLUTIONS, INC

Senior Network Security Engineer CACI

Network Security Engineer CACI

Sr Security Engineer, Network, Leo Security Amazon.com Inc

Networking Security Engineer II CACI

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

Cloud Network Security Engineer Revolutional, LLC

Sr Network Security Specialist, Leo Security Amazon.com Inc

Principal Network Security Engineer Leidos Holdings Inc

Cisco Network Security Engineer/ Senior Consultant Deloitte

Cyber Palo Alto Networks Security Engineer/ Senior Consultant, Strategy, Growth, and Transformation Deloitte Touche Tohmatsu Ltd

Cyber Zscaler Network Security Engineer / Senior Consultant, Strategy, Growth, And Transformation Deloitte

Network Security Engineer Guidepoint Security LLC

Network Engineer – VDI Security / Network Infrastructure TalentOps

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