Haystack
← Back to Jobs
Technology
CS

Network Security Engineer

CSZNet, IncWashington, DC🇺🇸United StatesPosted Sep 29, 2026

Quick Overview

Seniority
Mid Senior
Work mode
Hybrid
Location
Washington, DC, United States
Posted
Yesterday

Job Description

The Network Security Engineer II supports the ongoing design, implementation, operation and security of the agency' network and the supporting security infrastructure. 

  • Experience building large scale, multi-site network architectures 
  • Experience with secure remote access/WAN technologies (IPsec, VPN, etc.) 
  • Knowledge of network-based and system-level attacks and mitigation methods 
  • Experience with firewalls: Cisco Firepower (NGFW) or Cisco ASA Firewalls; 
  • Experience with security routing protocols
  • 4+ years of experience in the development, configuration, installation, and maintenance of networked systems including LANs, WANs and Telephony Systems
  • Experience with network standards, protocols, and procedures
  • Experienced in network architecture and topology, including transmissions protocols, broadcasting, switching, control, and management
  • Experience in performing routing networking configuration management functions.
  • Experienced in network systems management methods including end-to -end systems performance monitoring.
  • Certification in network or system administration is highly desired, such as CCNA, CCNP, CCIE, CISSP, MCSE, MCSA

Technical Skills:Security: Cisco Firepower (Next generation firewall), Cisco ASA Firewalls, Cisco ISE 2.0 and above (Identity Services Engine), Cisco NGFW (Next Generation Firewall), Cisco AMP (Advanced Malware Protection), Cisco Firepower. 

Similar jobs