Job Description

Salary: $230,000 - 290,000 per year Requirements:

• Active Top Secret security clearance with SCI eligibility.
• Security+ certification and at least one platform-specific security credential such as PCNSE, Fortinet NSE, or a Cisco security certification.
• DoD 8140 certification relevant to the 441 Network Operations Specialist role, such as Network+, Security+, Cloud+, SSCP, CASP+, CISSP, or CCNP Security.
• Over 10 years of experience in network engineering, with a focus on enterprise network security infrastructure.
• Proven expertise in designing, implementing, and managing next-generation firewalls, VPN solutions, intrusion prevention systems, and network access control platforms.
• Hands-on experience securing network perimeters and internal segments, including policy design and threat mitigation strategies.
• Operational experience in deploying and managing firewall rule sets, VPN tunnels, and security policies in mission-critical settings.
• Proficient in using at least one enterprise security platform, such as Palo Alto Networks, Fortinet, or Cisco technologies.
• Direct experience with Cisco ISE and Cisco ASA environments.
• Familiarity with IDS and IPS solutions and endpoint configuration hardening in secure environments.
• Experience with Zero Trust architectures and identity-centric networking.
• Ability to begin contributing immediately in a high-stakes operational environment.
• Willingness to act as critical personnel during emergencies or operational interruptions.

• Design, deploy, and manage firewalls, VPNs, IDS/IPS, and NAC solutions in essential operational environments.
• Enhance security at network perimeters and within internal segments using multi-layered defense strategies.
• Act promptly in response to security incidents, vulnerabilities, and urgent operational demands.
• Support efforts for continuous security enhancements and improvements of network infrastructure.
• Engage in Agile processes, technical planning, and discussions related to security risks.
• Articulate security impacts, risks, and mitigation strategies effectively to both technical and non-technical stakeholders.
• Propose and implement improvements in security architecture and operations.
• Act as a hands-on subject matter expert, able to contribute from day one with little onboarding required.
• Foster a high level of trust and confidence with clients through dependable and secure service delivery.
• Employ creativity and sound engineering judgment to create practical, mission-driven security solutions.
• Oversee the design, implementation, and management of advanced firewalls, VPN systems, IPS, and network access control technologies.
• Secure network perimeters and internal segments through effective policy design, segmentation, and threat mitigation.
• Configure and manage firewall rules, VPN connections, and security policies in critical environments.
• Operate at least one enterprise-level security platform such as Palo Alto Networks, Fortinet, or Cisco technologies.
• Manage Cisco ISE and Cisco ASA environments effectively.
• Deploy and oversee IDS and IPS solutions, alongside endpoint configuration hardening in secure settings.
• Promote Zero Trust frameworks and identity-oriented network security models.
• Contribute actively from the outset in high-pressure operational contexts.

• Cloud
• Cisco
• Firewall
• Support
• Network
• Security
• VPN
• AI

More:

We are looking for a Sr. Network Security Engineer III to enhance the security of mission-critical enterprise networks within a federal environment, located onsite in Washington, DC. This full-time, permanent position offers a competitive salary ranging from $230,000 to $290,000 per year, along with a comprehensive benefits package. Our company values transparency and a strong commitment to positively impacting the lives of our employees and the communities we serve. Join our team as we work collaboratively to ensure secure mission delivery across the organization.

last updated 13 week of 2026

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