Senior Cisco ISE Network Engineer

General information

Requisition #

R71680

Locations

USA-FL-Doral

Posting Date

11/05/2026

Security Clearance Required

Top Secret

Remote Type

Onsite

Time Type

Full time

Description & Requirements

Shape the future of defense with MANTECH! Join a team dedicated to safeguarding our nation through advanced tech and innovative solutions. Since 1968, we've been a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact. Dive into exciting opportunities in Cybersecurity, IT, Data Analytics and more. Propel your career forward and be part of something extraordinary. Your journey starts now-protect and innovate with MANTECH!

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.

MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.