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Network Security Engineer; SASE​/ZTNA

Job in Falls Church, Fairfax County, Virginia, 22042, USA
Listing for: General Dynamics Information Technology
Full Time position
Listed on 2026-03-05
Job specializations:
  • Engineering
    Cybersecurity, Systems Engineer
Salary/Wage Range or Industry Benchmark: 81600 - 110400 USD Yearly USD 81600.00 110400.00 YEAR
Job Description & How to Apply Below
Position: Network Security Engineer (SASE/ZTNA)

Job Qualifications

  • Netskope
  • Netskope Security Cloud
  • Zero Trust

Type of Requisition:
Regular

Clearance Level Must Currently Possess:
None

Clearance Level Must Be Able To Obtain:
None

Public Trust/Other

Required:

NACI (T1)

Job Family:
Cyber and IT Risk Management

Certifications:

None

Experience:

7+ years of related experience

US Citizenship

Required:

No

Position Summary

We are looking for a Network Security Engineer to support the advancement of our secure access infrastructure and play a key role in managing and modernizing our security operations. The individual will play a significant role in transitioning from a legacy Cisco Secure Client environment to a modern, cloud-native SASE (Secure Access Service Edge) architecture, with a strong focus on Zero Trust Network Access (ZTNA).

If you are a skilled network engineer with a passion for SASE, ZTNA, and automation, we encourage you to apply and help drive our organization’s secure and efficient future.

Key Responsibilities
  • Implementation & Maintenance:
    • Assist in deploying and managing SASE/SSE components, including Secure Web Gateways (SWG), Cloud Access Security Brokers (CASB), Firewall-as-a-Service (FWaaS), SD-WAN, and Zero Trust Network Access (ZTNA).
  • Modernizing Access:
    • Support the migration from legacy Cisco Secure Client environments to identity‑centric Zero Trust models, ensuring a smooth transition and troubleshooting any challenges.
  • Automation & Integration:
    • Write and understand API scripts (e.g., Python, Power Shell, Bash) for automating manual tasks, pulling security telemetry, and integrating Netskope or other cloud‑native services.
  • Advanced Network Troubleshooting:
    • Routing & Proxy:
      Diagnose and resolve traffic flow issues, PAC file misconfigurations, transparent proxies, and SSL inspection challenges.
    • Protocol Analysis:
      Utilize Wireshark or tcpdump to troubleshoot complex network paths, including latency, packet loss, and SSL/TLS issues.
    • Connectivity:
      Resolve issues involving VLANs, NAT, 802.1X supplicants, DNS, and SaaS/COTS applications.
    • SD‑WAN Integration:
      Collaborate on integrating SD‑WAN with SASE platforms for secure traffic steering and optimal performance.
  • Infrastructure Monitoring & Health:
    • Manage and monitor network health using SNMP, SIEM, Grafana, and syslog tools.
    • Troubleshoot network connectivity issues within Docker/Linux environments.
  • Cloud Security Support:
    • Maintain firewall policies across AWS, Azure, and GCP while managing API‑based security integrations with products such as Netskope.
Required Qualifications
  • 5+ years in Network/VPN Engineering.
  • 2+ years hands‑on experience with SASE/ZTNA platforms and Cloud services.
  • Strong critical thinking and problem‑solving skills.
  • Effective communication and teamwork abilities.
  • Fast learner with the ability to adapt to evolving technologies.
  • Solid understanding of SD‑WAN integration with SSE/SASE frameworks.
  • Deep understanding of Windows 10/11 network behaviors and troubleshooting on client‑side devices.
  • Strong knowledge of routing protocols, PAC file configuration, and proxy architecture concepts.
  • Hands‑on experience with Cisco Secure Client (Any Connect), firewalls, and 802.1X authentication protocols.
  • Proficiency in tools such as SNMP, SIEM, Grafana, and Docker troubleshooting for monitoring operational health.
  • Hands‑on expertise with solutions such as Netskope, Zscaler, or Palo Alto Networks Prisma Access.
  • Strong experience with scripting and automation using Python, Power Shell, or Bash.
Preferred Qualifications
  • Certifications such as CCNP Security, NSE4, Zscaler Certified Cloud Engineer, or equivalent.
  • Familiarity with secure Dev Ops principles and CI/CD in cloud environments.
  • Experience securing hybrid cloud workloads across AWS, Azure, and Google Cloud.
Job Benefits
  • Competitive compensation and benefits package.
  • Opportunity to work on cutting‑edge SASE/ZTNA solutions and architectures.
  • Collaborative environment fostering professional growth and innovation.

The likely salary range for this position is $81,600 - $110,400. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this…

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