- The Senior Network Administrator NAC ARP Guard is responsible for end to end ownership of Network Access Control built on ARP Guard tooling including greenfield installs configuration baselining policy design production administration high availability clustering incident response troubleshooting periodic audits and secure decommissioning
- The role interfaces closely with security endpoint server and service desk teams to ensure only compliant identified and authorized devices connect to the network while maintaining user experience and uptime SLAs
- Key Responsibilities
- 1 NAC Installation Core Configuration ARP Guard
- 2 Policy Enforcement Segmentation
- 3 High Availability Clustering Scalability
- 4 Operations Monitoring Maintenance
- 5 Troubleshooting Incident Response
- 6 Security Compliance
- 7 Network Administration Core Complementary Skills
- 8 Decommissioning Lifecycle Management
- Required Skills Qualifications
- 6 years overall network administration with at least 3 years focused on NAC ARP Guard in production
- Hands on with ARP Guard components policy creation enforcement modes and HA setups
- Strong understanding of L2 L3 networking VLANs STP trunking ARP DHCP routing basics multicast IGMP
- Working knowledge of switch OS Cisco Aruba Juniper or equivalent WLAN controllers and Windows Linux endpoints
- Experience integrating with identity stores AD LDAP SIEM and ITSM tools ServiceNow Remedy Jira
- Proficiency in change incident problem ITIL and disciplined documentation
- Preferred Skills
- Experience with 802
- 1X EAP TLS RADIUS and certificate lifecycle
- Scripting automation Python PowerShell Bash for bulk operations and reporting
- Exposure to zero trust segmentation approaches and NAC alternatives
- Certifications Preferred
- Network CCNA CCNP JNCIA JNCIS Aruba ACNSA ACSP or equivalent
- Security ITIL Security CySA ITIL Foundation
- Behavioral Competencies
- Customer first mindset strong ownership and urgency
- Excellent written and verbal communication across technical and non technical stakeholders
- Analytical detail oriented and calm under pressure
- Shift Availability
- Business hours with on call rotation for critical incidents
- Availability for planned change windows DR HA tests and audits
Domain->Network->Data networking Access technologies,Domain->Network->Data networking WLAN Protocols & Standards,Domain->networking->Cisco certifications,Domain->Networking->Cisco - WLAN controllers,Technology->Architecture->Architecture - ITIL,Technology->Infrastructure Security->Network Access Control (NAC),Technology->Infrastructure-Server Administration->LDAP Server
