Senior Network Security Engineer

About This Opportunity

Our talent team is representing a confidential federal technology services organization seeking a Senior Network Security Engineer to join their mission-critical infrastructure team. This remote-eligible role (US-based) offers the opportunity to architect and implement advanced network security solutions in a high-availability government environment.

You'll serve as a technical anchor driving network modernization efforts, transitioning legacy architectures to secure, cloud-integrated Trusted Internet Connection (TIC) 3.0 frameworks. This position requires a proactive problem-solver comfortable working in a high-tempo, availability-first environment supporting national security initiatives.

Responsibilities

• Design, configure, and maintain geographically distributed network perimeters; architect secure site-to-site IPsec VPN tunnels and engineer the transition from TIC 2.0 colocation centers to cloud-integrated TIC 3.0 secure overlays
• Perform expert-level administration, configuration, and troubleshooting of enterprise firewall and switching infrastructure including Palo Alto Networks Next-Generation Firewalls, Fortinet FortiGate appliances, Juniper and Brocade switches
• Maintain network configuration baselines using Infrastructure as Code (IaC) techniques; collaborate with development teams to write and execute Ansible playbooks and GitLab CI/CD pipelines for automation of VLAN assignments, port configuration, and dynamic DNS controls
• Utilize packet brokers and monitoring tools to analyze network flows, detect anomalous lateral movement, and integrate out-of-band probing utilities for continuous perimeter performance tracking
• Develop and maintain comprehensive documentation of network cabling, IP addresses, MAC addresses, and VLAN assignments; generate dynamic topology maps and automate configuration drift audits
• Collaborate with ISSO and Vulnerability Assessment Teams to run network scans, analyze results, apply Security Technical Implementation Guides (STIGs/CIS), and execute remediation activities
• Configure and maintain High-Availability (HA) firewalls, diagnose active-active split-brain states, and participate in 24/7 on-call rotation with strict one-hour response windows for service-impacting events

What We're Looking For

Required Qualifications:

• Bachelor's degree in Computer Science, Computer Systems Engineering, Cybersecurity, or related field with 5+ years of direct Systems or Network Engineering experience; OR Associate's degree with 8+ years of experience; OR 11+ years of relevant experience with no degree
• Minimum 3 years hands-on administration of Palo Alto Networks firewalls (PAN-OS) and Juniper core switching infrastructure (Junos OS) in an enterprise environment
• In-depth technical mastery of BGP routing (including BGP Anycast configurations and route-withdrawal failover scripts), OSPF, and IPsec VPN tunneling
• Proven working knowledge of federal security compliance standards including FISMA, NIST Risk Management Framework (RMF) SP 800-53 Rev. 5, and CISA Zero Trust guidelines
• Must be US citizen with current/active Secret clearance

Highly Desired:

• Professional security certifications: ISC2 CISSP, ISSAP, Cisco CCIE Security, CCDE, CCAr, or ISC2 CCSP
• Active CCNA or advanced Palo Alto or Juniper-equivalent certifications
• Experience scripting in Python or Bash and building custom Ansible playbooks for network configuration management
• Experience with secure transit gateways and VPC routes in AWS or Azure environments

How We Work With You

Candidates apply directly through Get A Job.ai. Our recruiting team will conduct an initial screening to understand your background and career goals. Qualified candidates will then be submitted to our client for consideration. Please do not attempt to contact the client directly, as all communication must flow through our talent team to ensure a professional and coordinated process.

Pay

Compensation details will be discussed during the screening process based on your experience, certifications, and the specific requirements of the final placement.

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