Specialist Network Engineer - Cisco Security

About this role

The Specialist Network Engineer - Cisco Security is responsible for designing, implementing, and supporting enterprise network security solutions with a primary focus on Cisco Identity Services Engine (ISE) and Cisco Firepower technologies (FTD & FMC). The role involves managing network access control (NAC), authentication services, firewall policies, VPN solutions, and advanced threat protection to ensure secure and reliable enterprise infrastructure operations. The engineer works closely with network, infrastructure, and security teams to deploy and optimize security controls across wired, wireless, and remote access environments. Key responsibilities include configuring Cisco ISE for authentication, authorization, posture assessment, and device profiling, as well as administering Cisco Firepower firewalls, IPS, AMP, and URL filtering features.
The role also includes monitoring security infrastructure, troubleshooting complex network security issues, performing system upgrades, and responding to security incidents. Additionally, the engineer is responsible for maintaining security documentation, enforcing organizational security standards, and contributing to continuous improvement initiatives to strengthen the company’s overall security posture. The ideal candidate should possess strong hands-on experience with Cisco security technologies, enterprise networking concepts, and security best practices.
Responsibilities:
Cisco ISE (Identity Services Engine) Administration
Design, deploy, and maintain Cisco ISE solutions for Network Access Control (NAC)
Configure and manage AAA services using:
802.1X
MAB
TACACS+
Manage and support:
Guest access portals
BYOD onboarding
Posture assessment policies
Integrate Cisco ISE with Active Directory and identity management systems
Troubleshoot authentication and authorization issues across wired and wireless environments
Define and enforce access control policies based on user roles, device profiling, and security posture
Cisco Firepower (FTD & FMC) Management
Manage Cisco Firepower (FTD & FMC) environments
Firewall policies
Site-to-site & remote access VPNs
Monitor security features like IPS, AMP, URL Filtering
Perform upgrades, patching, and security monitoring
Security Operations
Monitor and troubleshoot network security issues
Support incident response and root cause analysis
Ensure infrastructure availability and compliance
Documentation & Continuous Improvement
Maintain documentation of security configurations, policies, and operational procedures
Contribute to the development of network security standards and best practices
Identify opportunities to improve security posture, operational efficiency, and infrastructure resilience

Our Culture & Code of Conduct:
At ZainTECH, we take pride in a culture built on collaboration, innovation, and uncompromising integrity. We are looking for individuals who share these values and are committed to customer-centricity and ethical excellence. All employees are expected to uphold our Code of Conduct, which serves as a guiding framework for responsible behavior across everything we do — from how we work with each other to how we engage with clients and partners globally.
Requirements
Bachelor’s degree in Computer Science, Information Technology, or related field, or equivalent experience
3–5+ years of experience in network security or security engineering roles
Hands-on experience with Cisco ISE and Cisco Firepower (FTD & FMC) technologies
Experience supporting enterprise-scale network security environments and NAC solutions
Strong understanding of TCP/IP networking, VLANs, routing, switching, and security architectures
Experience with VPN technologies, firewall policy management, and security monitoring/log analysis
Knowledge of enterprise security best practices, access control frameworks, and incident troubleshooting