Network Administrator

About the role

MANTECH is seeking a motivated, customer‑oriented Network Administrator to join our team in Doral, FL. This position follows a Panama Schedule with rotating day and night shifts and requires flexibility to work days, nights, weekends, and holidays.

Key responsibilities

• Manage and administer enterprise routers, switches, firewalls, and network infrastructure across mission networks.
• Develop, implement, and enforce network security policies, profiling rules, and guest access workflows within Cisco ISE.
• Troubleshoot complex network connectivity issues, authentication failures, and access control policy enforcement points.
• Conduct routine system maintenance, vulnerability patching, firmware updates, and baseline configuration management for network devices.
• Collaborate with cross‑functional engineering teams, cybersecurity staff, and site leadership to maintain optimal network uptime and security compliance.
• Maintain accurate technical documentation, network diagrams, baseline configurations, and operational inventories.

Required profile

• Bachelor’s degree in a related field with 5+ years of network administration experience (or equivalent education/experience combinations).
• 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).
• Hands‑on experience with network device configuration, patch management, and baseline configuration controls.
• Experience creating, maintaining, and communicating complex IT documentation and network diagrams.

Required skills

• Cisco ISE
• Enterprise routing and switching
• 802.1X authentication
• RADIUS/TACACS+ protocols
• Network Access Control (NAC)
• Network device configuration
• Patch management
• Baseline configuration management
• Technical documentation
• Network diagramming