Senior Network Infrastructure Engineer

2 weeks ago

palakkad, India beBeeSecurity Full time

Job Title:Network Security ArchitectAbout the Role:We are seeking a skilled Network Security Architect to lead our team in designing and implementing secure corporate network infrastructure. This role requires expertise in Cisco ISE, DNA Center, SD-Access, LAN/WAN, wireless networks, and 802.1X protocols.The ideal candidate will have hands-on experience with ISE portals, certificate management, upgrade procedures, regulatory compliance, and security patching. Strong automation skills using Python, Ansible, REST APIs are also essential.Key Responsibilities: Design, implement, and maintain secure corporate network infrastructure prioritizing security, reliability, and scalability. Lead Cisco ISE deployments and architecture design expert in RADIUS/802.1X authentication, EAP-TLS, TrustSec policies, TACACS, and AAA configuration on NADs. Oversee and tune guest/sponsor portals, BYOD onboarding, and custom portal solutions for secure and flexible network access. Plan, document, and execute Cisco ISE upgrades, patch management, gold star release evaluation, and regulatory compliance. Integrate network systems with Azure/Intune, Active Directory, and third-party ecosystems for device identity/posture, application access, and security controls. Manage end-to-end certificate lifecycle for network services, ISE portals, and device authentication (CSR generation, CA signing, binding, backups, expiry management). Administer TACACS for secure device management and policy-based access to network infrastructure. 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. Implement and support SD-Access solutions, including segmentation, policy deployment, and campus fabric operations. Troubleshoot complex wireless and wired network issues, conduct log analysis, resolve authentication failures, and optimize LAN/WAN performance. Collaborate in global network deployments, change management, and incident response—manage project documentation and coordinate across international teams and time zones.Required Skills and Qualifications: Advanced proficiency in Cisco ISE administration, DNA Center, SD-Access, LAN/WAN, wireless networks, and 802.1X protocols. Deep understanding of RADIUS, EAP-TLS, TrustSec, TACACS, AAA policies, and NAD configuration. Hands-on experience with ISE portals, certificate management, upgrade procedures, regulatory compliance, and security patching. Familiarity with ITSM tools (JIRA, Freshworks/Freshservice, ServiceNow) and cloud integration (Azure, AWS). Proven automation skills using Python, Ansible, REST APIs; experience integrating with ITSM tools (JIRA, Freshworks/Freshservice, ServiceNow) and cloud platforms (Azure, AWS). Certifications: CCNP Security, CCIE, or equivalent.Bonus Points:5+ years network/security engineering experience, 3+ years in secure Cisco environments.

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