Sr Network Security Engineer

Arena Technical Resources, LLC (ATR)
Falls Church, VA

Overview

Job Title: Sr Network Security Engineer
Job Location: Falls Church, Virginia
Eligibility/Clearance: Required to obtain a Public Trust Clearance

Job Description

Advance your career while impacting our national security in cyber as a Sr. Network Security Engineer. Here, technologists have many paths to grow a meaningful career supporting cyber missions and operations across the federal government.

Responsibilities

  • Lead the design, configuration, and deployment of Cisco Identity Services Engine (ISE) for network access control.
  • Manage and implement network access policies using Cisco Secure Client and Microsoft native supplicants for both wired and wireless authentication.
  • Test and deploy posture assessment for endpoints to ensure compliance with security policies.
  • Troubleshoot and resolve network access issues related to 802.1X authentication and posture assessment.
  • Configure and manage network devices to enforce access control policies.
  • Work closely with the network and security teams to ensure seamless integration of network access control solutions.
  • Develop and maintain detailed documentation of configurations, processes, and procedures.
  • Provide training and knowledge transfer to internal teams as needed.
  • Stay up-to-date with the latest industry trends and technologies related to network access control and security.

Requirements

  • Minimum of 5 years of experience in network engineering and security, with a focus on network access control.
  • Expertise in configuring and managing Cisco Identity Services Engine (ISE).
  • Proficiency in using Cisco Secure Client and Microsoft native supplicants for 802.1X authentication.
  • Experience with both wired and wireless network authentication and posture assessment.
  • Strong understanding of network security principles and best practices.
  • Excellent troubleshooting and problem-solving skills.
  • Strong communication and documentation skills.
  • Relevant certifications (e.g., CCNP, CCIE, JNCIP, JNCIE or other Cisco and Juniper security certifications) are preferred.

Desired Qualifications

  • Experience with other network access control solutions.
  • Familiarity with endpoint security and compliance management.
  • Knowledge of scripting and automation tools.
  • Experience with Riverbed Profiler and analyzing NetFlow data is a plus.

Education

Bachelor’s degree in Computer Science, Information Technology, or a related field.

ATR is an Equal Opportunity Employer (EOE) who will provide equal employment opportunity to employees and applicants for employment without regard to race, ethnicity, religion, color, sex, pregnancy, national origin, age, veteran status, ancestry, sexual orientation, gender identity or expression, marital status, family structure, genetic information, or mental or physical disability.

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Posted 2026-01-14

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