Senior engineer responsible for administering, upgrading, patching, troubleshooting, and deploying Cisco ISE in enterprise environments. Manages authentication, authorization, NAC, certificates, PKI, Active Directory integration, HA, monitoring, and security remediation. Handles ServiceNow change management, implementation and rollback planning, major incidents, root-cause analysis, Cisco TAC cases, infrastructure migrations, and integrations with network, firewall, DNS, SIEM, and automation platforms.
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.
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