Senior Cyber Security Engineer; Cisco ISE​/Network Security Security Clearance

Position: Senior Cyber Security Engineer (Cisco ISE / Network Security) with Security Clearance
Senior Cyber Security Engineer (Cisco ISE / Network Security) – TS/SCI CI Poly Required

Location:

Chantilly, VA

Employment Type:

Full-Time Security Clearance:
Active TS/SCI with CI Polygraph Required

Position Overview We are seeking a Senior Cyber Security Engineer with expertise in network security, access control technologies, and Cisco Identity Services Engine (ISE) to support a highly secure enterprise environment. This position plays a critical role in protecting enterprise infrastructure by implementing and maintaining advanced network access controls, security policies, and cybersecurity solutions. The ideal candidate will possess a strong background in network security engineering, Cisco technologies, cybersecurity operations, and enterprise security architecture.

Key Responsibilities
• Design, implement, and maintain enterprise network security solutions.

• Configure, administer, and optimize Cisco Identity Services Engine (ISE) environments.

• Support Network Access Control (NAC) initiatives and policy enforcement.

• Analyze network traffic and security events to identify threats and vulnerabilities.

• Perform vulnerability assessments and security analysis using industry-standard tools.

• Support cybersecurity compliance requirements and security engineering initiatives.

• Collaborate with infrastructure, networking, and cybersecurity teams to implement secure solutions.

• Troubleshoot and resolve complex network security and access control issues.

• Develop and maintain technical documentation, architecture diagrams, and operational procedures.

• Support continuous monitoring, incident response, and security operations activities.

Required Qualifications
• Bachelor's degree and 5+ years of cybersecurity or network security engineering experience (or additional relevant experience in lieu of degree).

• Hands-on experience administering and supporting Cisco Identity Services Engine (ISE).

• Experience with Network Access Control (NAC) technologies and 802.1X authentication.

• Strong understanding of TCP/IP networking, routing, switching, and network security principles.

• Experience with firewalls, intrusion prevention systems (IPS), and enterprise security technologies.

• Experience performing vulnerability assessments and security analysis.

• Familiarity with Linux and Windows operating systems.

• Strong troubleshooting and analytical skills.

• DoD 8570 IAT Level II certification (Security+ or equivalent) or ability to obtain within six months.

Preferred Qualifications
• Experience supporting Comply-to-Connect (C2C) initiatives.

• Experience with Cisco networking technologies and enterprise architecture.

• Experience with Nessus, Nmap, and vulnerability management programs.

• Knowledge of Zero Trust principles and network segmentation strategies.

• Experience supporting classified environments.

• Cisco certifications (CCNA, CCNP, or related certifications). Clearance Requirement Active TS/SCI clearance with CI Polygraph is required. Why Apply? This position offers the opportunity to support advanced cybersecurity and network security initiatives within a mission-focused environment while working with enterprise-scale infrastructure, modern security technologies, and critical national security programs.