Senior Cisco ISE Network Engineer with Security Clearance

MANTECH seeks a motivated, career and customer-oriented Senior Cisco ISE Network Engineer to join our team in Doral, FL. Responsibilities include but are not limited to:

• Designing, deploying, configuring, and maintaining enterprise Cisco Identity Services Engine (ISE) infrastructure across multi-site mission networks.
• Developing, implementing, and enforcing 802.1X authentication, posture assessment, profiling, and guest access policies.
• Integrating Cisco ISE with Active Directory, PKI infrastructure, network access devices, firewalls, and security operations tools.
• Managing RADIUS and TACACS+ protocols to enforce role-based access control, device administration standards, and network segmentation.
• Conducting software upgrades, patch management, performance tuning, and vulnerability remediation across Cisco ISE nodes.
• Monitoring system health, analyzing network access logs, and resolving complex tier-3 network security and authentication incidents.
• Maintaining comprehensive network documentation, including architecture diagrams, implementation plans, and standard operating procedures.

Minimum Qualifications

• Bachelor's degree in Computer Science, Information Technology, Network Engineering, or a related field with 5+ years of experience in network engineering.
• OR a master's degree and 3+ or more years of relevant experience
• OR an associate's degree and 7+ or more years of relevant experience
• OR a high school diploma and 9+ or more years of relevant experience
• Proven experience configuring, administering, and troubleshooting Cisco Identity Services Engine (ISE) in an enterprise environment. Strong background in enterprise routing, switching, 802.1X authentication, RADIUS/TACACS+ protocols, and network access control (NAC).

Preferred Qualifications

• Cisco Certified Network Professional (CCNP Security) or Cisco Certified Internetwork Expert (CCIE) certification.
• Experience integrating Cisco ISE with Cisco DNA Center, SD-Access, Firepower, or SIEM platforms.
• Prior experience supporting U.S. Military Command operations or Department of Defense enterprise network environments.

Clearance Requirements

• Must hold a current/active top secret security clearance.

Physical Requirements

• Must be able to remain in a stationary position 50%.
• Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
• Frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.