Advanced Network Security Specialist

3 days ago

davangere, India beBeeNetworkSecurity Full time

Network Security EngineerAbout the Role:We are seeking a seasoned Network Security Engineer to lead our team in designing and implementing secure network infrastructure. The ideal candidate will have expertise in Cisco ISE administration, DNA Center, SD-Access, LAN/WAN, wireless networks, and 802.1X protocols.Key Responsibilities:Design and Implement Secure Network Infrastructure: Develop and deploy secure network architecture prioritizing security, reliability, and scalability.Cisco ISE Deployments and Architecture: Lead expert in RADIUS/802.1X authentication, EAP-TLS, TrustSec policies, TACACS, and AAA configuration on NADs.Guest/Sponsor Portal Management: Oversee and tune guest/sponsor portals, BYOD onboarding, and custom portal solutions for secure and flexible network access.Upgrade and Patch Management: Plan, document, and execute Cisco ISE upgrades, patch management, gold star release evaluation, and regulatory compliance.Integration with Cloud and IT Systems: Integrate network systems with Azure/Intune, Active Directory, and third-party ecosystems for device identity/posture, application access, and security controls.Certificate Lifecycle Management: Manage end-to-end certificate lifecycle for network services, ISE portals, and device authentication (CSR generation, CA signing, binding, backups, expiry management).TACACS Administration: Administer TACACS for secure device management and policy-based access to network infrastructure.Automation and Workflow Creation: Automate network management with Python, Ansible, and REST APIs; create workflows with Cisco DNA Center (DNAC), automate inventory sync with CMDB (Freshworks, ServiceNow), and ensure API governance.SD-Access Implementation: Implement and support SD-Access solutions, including segmentation, policy deployment, and campus fabric operations.Troubleshooting and Optimization: Troubleshoot complex wireless and wired network issues, conduct log analysis, resolve authentication failures, and optimize LAN/WAN performance.Required Skills and Qualifications:Expertise in Cisco ISE Administration: Advanced proficiency in Cisco ISE administration, DNA Center, SD-Access, LAN/WAN, wireless networks, and 802.1X protocols.Deep Understanding of Security Protocols: Deep understanding of RADIUS, EAP-TLS, TrustSec, TACACS, AAA policies, and NAD configuration.Hands-on Experience with Certificate Management: Hands-on experience with ISE portals, certificate management, upgrade procedures, regulatory compliance, and security patching.Familiarity with ITSM Tools: Familiarity with ITSM tools (JIRA, Freshworks/Freshservice, ServiceNow) and cloud integration (Azure, AWS).Proven Automation Skills: Proven automation skills using Python, Ansible, REST APIs; experience integrating with ITSM tools (JIRA, Freshworks/Freshservice, ServiceNow) and cloud platforms (Azure, AWS).

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