Senior Cisco Identity Services Engine (ISE) Engineer

Role: Senior Cisco Identity Services Engine (ISE) Engineer Location: Washington, DC (Onsite) Type: Full-Time

Required Experience

• 10–15 years of Network/Security Engineering experience.
• Strong hands-on experience with Cisco ISE 3.x in large enterprise environments.
• Experience with Cisco ISE upgrades, patching, troubleshooting, administration, and multi-node deployments .
• Strong knowledge of 802.1X, RADIUS, EAP/EAP-TLS, NAC, AAA, Authentication & Authorization Policies .
• Experience with Active Directory integration, Security Groups, and Identity Sources .
• Strong understanding of PKI and Certificate Management , including server certificates, CA chains, certificate renewals, thumbprints, and certificate-based authentication.
• Experience with Cisco ISE vulnerability remediation, security patching, and production support .
• Hands-on experience with packet captures, ISE logs, authentication troubleshooting, and root cause analysis .
• Experience integrating Cisco ISE with:
• Cisco Catalyst
• Meraki
• Firewalls
• F5
• DNS
• Splunk/SIEM platforms

ServiceNow & Change Management

• Experience creating and managing ServiceNow Change Requests .
• Ability to write implementation, validation, rollback, and risk assessment plans.
• Experience executing:
• ISE upgrades and patching
• Certificate renewals
• DNS changes
• Policy updates
• Security group changes
• New integrations
• Infrastructure migrations

Incident & Support Experience

• Strong troubleshooting experience across: Endpoint → Switch/AP → ISE → Active Directory → Authorization Policy → Network Access
• Experience with major incidents, RCA, and Cisco TAC case management.
• Ability to diagnose authentication, authorization, certificate, and connectivity issues.

Infrastructure & Automation

• Experience with:
• Cisco ISE migrations and node deployments
• High Availability (HA) environments
• Splunk monitoring and alerting
• ServiceNow integrations
• Preferred experience with:
• Python
• Ansible
• Terraform
• REST APIs
• CI/CD Automation

Preferred Qualifications

• CCNP Enterprise / CCNP Security or equivalent.
• Experience with Cisco Catalyst, Meraki, Enterprise Wireless, Active Directory, PKI, Splunk, and ServiceNow.
• Experience in highly regulated enterprise environments.