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# Senior Cisco Identity Services Engine (ISE) Engineer **

- **Company:** Cgi Inc.
- **Location:** Washington, DC, United States
- **Experience:** Expert
- **Salary:** $110,100.0
- **Contract:** Permanent contract
- **Skills:** IEEE 802.1X, Active Directory, Amazon Web Services, Information Systems, Computer Networks, Software Debugging, Domain Name System (DNS), Python (Programming Language), Packet Analyzer, Network Administration, Node.Js, Public Key Infrastructure, Ansible, Software Engineering, Systems Integration, Software Vulnerability Management, Wireless Access Point, Wireless Networks, Identity Services Engine, Network Access Control, System Availability, Firewalls (Computer Science), Information Technology, Restful APIs, Terraform, Splunk, Cisco Switches, Cisco, Servicenow
- **Published:** October 31, 2026
- **Apply:** https://www.careerbuilder.com/job-details/senior-cisco-identity-services-engine-ise-engineer-washington-dc--2e658b88-b378-488b-a650-28b372706baa

## About the Role

Cisco Network Systems, Cisco Network Systems, Software Development, Software Engineering, CGI (Common Gateway Interface), Network Access Control (NAC), Financial Services, Network Administration/Management, Tuition Fees, High Availability, 5+ years of hands-on experience administering and troubleshooting Cisco ISE 3.x in distributed, multi node enterprise environments.

. Thorough understanding of network access control (NAC), AAA, 802.1X, RADIUS, EAP/EAP TLS, and certificate based wired and wireless authentication.

. Experience managing ISE authentication and authorization policies, policy sets, identity sources, Active Directory group mappings, and security group-based access controls.

. Practical knowledge of enterprise PKI, including certificate chains, CA trust, renewals, replacements, and their impact on endpoint authentication.

. Ability to independently execute ISE upgrades, patches, node maintenance, and vulnerability remediation while maintaining platform availability.

. Strong troubleshooting skills using ISE Live Logs, packet captures, debug output, and Splunk to trace authentication failures and identify root causes.

. Experience owning ServiceNow production changes, including risk assessments, implementation steps, validation, rollback procedures, and post change documentation.

. Working knowledge of Cisco Catalyst switching, enterprise wireless, DNS, firewall connectivity, and syslog integrations.

. Experience supporting infrastructure migrations, node deployment and retirement, high availability, and configuration lifecycle management.

. Ability to coordinate major incident resolution, work with Cisco TAC, document corrective actions, and guide other engineers.

Desired Skillset:

. Experience in financial services or another highly regulated enterprise environment.

. Familiarity with AWS and hybrid infrastructure supporting enterprise network and identity services.

. Experience with REST APIs, Python, Ansible, Terraform, or similar tools for operational automation.

. Experience connecting Splunk monitoring and alerts to ServiceNow incident workflows.

. CCNP Security, CCNP Enterprise, or relevant Cisco ISE training.

Educational Requirements:

Bachelor''s degree in computer science, Information Systems, or a related field.

Cisco certifications and ISE specific training are preferred, not required.

Skills:

 * Cisco
 * Ansible
 * Python
 * Splunk
 * Terraform

## Description

CGI is seeking a Senior Cisco Identity Services Engine (ISE) Engineer to lead the operation, maintenance, and support of an enterprise network access control platform in a large financial services environment., This hands-on role supports secure wired and wireless access, certificate-based authentication, identity integrations, and the availability of a distributed, highly available ISE environment.

You will independently manage platform upgrades, certificate renewals, policy changes, vulnerability remediation, and infrastructure migrations. Responsibilities include troubleshooting complex authentication failures, resolving production incidents, and managing changes through ServiceNow with clear implementation, validation, and rollback plans.

The role works closely with network, wireless, endpoint, security, and infrastructure teams, as well as Cisco TAC. Strong technical ownership, sound production judgment, and clear communication are essential. Scheduled evening and weekend maintenance work is required as needed.