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Network Security Engineer

Holistic Partners, Inc

Bethesda · Hybrid Contract Senior Today

About the role

Position Summary

We are seeking an experienced Network Security Engineer to support and enhance enterprise network security operations in a 24/7 environment. This role focuses on the design, implementation, and maintenance of firewall and VPN technologies, with an emphasis on Cisco-based solutions. The ideal candidate will play a key role in modernizing network security infrastructure while ensuring high availability, performance, and compliance.

Core Responsibilities

  • Manage and support Cisco ASA firewall environments across enterprise LAN/WAN networks
  • Design, configure, and maintain network security solutions, including:
    • Cisco ASA Firewalls
    • Cisco VPN technologies
    • Cisco AnyConnect
    • Cisco ACS
    • Gigamon tools
    • RSA security solutions
  • Troubleshoot and resolve complex network security, firewall, and connectivity issues
  • Collaborate with cross-functional IT teams to align security strategies and operational goals
  • Participate in project planning, execution, and delivery of network security initiatives
  • Work with third-party vendors for hardware/software support and issue resolution
  • Drive continuous improvement and modernization of network security infrastructure

Required Qualifications

Education

  • Bachelor’s degree in Computer Science, Information Systems, or equivalent experience

Experience

  • 8+ years of experience in network security engineering
  • Hands-on experience with:
    • Cisco ASA Firewalls
    • VPN technologies
    • Cisco AnyConnect
    • Cisco ACS
    • Gigamon
  • Experience supporting enterprise-level data center environments
  • Proven experience with mid-to-large scale Cisco firewall deployments

Certifications

  • CCNA or CCNA Security (required)
  • CCNP or CCNP Security (preferred)
  • CCIE (highly preferred)

Key Skills & Competencies

  • Strong communication skills (written and verbal)
  • Ability to explain complex technical concepts to both technical and non-technical stakeholders
  • Strong collaboration and leadership abilities within technical teams
  • Ability to manage multiple priorities in a fast-paced environment

Preferred Qualifications

  • Experience with Cisco Wireless LAN Controllers
  • Familiarity with Forescout security solutions
  • Experience configuring Cisco switches and ASA devices
  • Knowledge of 802.1X authentication
  • Experience with network segmentation (VLANs, MPLS)
  • Multi-OS support experience: Windows, Linux, macOS, iOS
  • Familiarity with ServiceNow and Visio

Skills

802.1XCisco ACSCisco ASACisco AnyConnectCisco switchesCisco VPNCisco Wireless LAN ControllersForescoutGigamonLinuxmacOSMPLSNetwork securityRSAServiceNowVLANsVisioVPNWindows

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