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Senior Network Security Engineer

TECKNOMIC LLCWashington, DC🇺🇸United StatesPosted Sep 25, 2026

Quick Overview

Seniority
Mid Senior
Work mode
Hybrid
Location
Washington, DC, United States
Posted
21 hours ago

Job Description

About This Role

The DC Office of the Chief Financial Officer (OCFO) is seeking a Senior Network Security Engineer to support the ongoing design, implementation, operation, and security of the OCFO network and its supporting security infrastructure. You will configure and secure network appliances, monitor and defend the perimeter, resolve complex technical issues, and provide network design services in compliance with OCFO security standards. This is a hybrid role in Washington, DC for candidates local to the DMV area, with regular onsite reporting as project needs require.

Responsibilities

  • Support the design, implementation, operation, and security of the OCFO network and supporting security infrastructure
  • Monitor and analyze traffic patterns, identify network problems, and recommend improvements for optimal performance, reliability, and stability
  • Configure routers, switches, firewalls, and other appliances in compliance with OCFO security standards
  • Monitor perimeter security measures to prevent breaches and safeguard information from unauthorized access; stay current on the latest threats, worms, and malware
  • Resolve complex technical issues escalated to the Network Engineer level with appropriate urgency; coordinate solutions and communicate results
  • Provide network design services and coordinate with the Infrastructure Services Group on scope, timing, and technical approach for network changes
  • Manage production and disaster recovery networks and security; ensure adherence to network policies and procedures
  • Perform forensic and packet analysis; configure and operate network security-focused monitoring and logging systems

Qualifications

  • 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, and with security routing protocols
  • 4 plus years across networked systems (LANs, WANs, telephony), network standards/protocols, network architecture and topology, routing configuration management, and network systems management (end-to-end performance monitoring)
  • Local to the DMV area and able to report onsite in Washington, DC as required
  • Preferred: certification in network or system administration such as CCNA, CCNP, CCIE, CISSP, MCSE, or MCSA

Required Skills

  • Network architecture and topology design across multi-site LAN/WAN and telephony environments
  • Routing, switching, and network configuration management, with end-to-end performance monitoring
  • Network security engineering: perimeter defense, threat mitigation, and safeguarding against unauthorized access
  • Firewall configuration and operation (next-generation firewalls) in compliance with security standards
  • Secure remote access and WAN technologies (IPsec, VPN) and security routing protocols
  • Forensic and packet analysis; security-focused monitoring and logging systems
  • *Software / tools:* Cisco Firepower (NGFW), Cisco ASA, Cisco ISE 2.0+, Cisco AMP; routers, switches, IPsec/VPN

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