Senior Network Infrastructure Specialist

2 weeks ago

shimoga, India beBeeEngineering Full time

Job Description:We are seeking a seasoned Network Security Engineer to lead our network infrastructure design, implementation, and maintenance efforts.Key Responsibilities:Design, implement, and maintain a robust corporate network infrastructure prioritizing security, reliability, and scalability.Lead the deployment of Cisco ISE solutions, including RADIUS/802.1X authentication, EAP-TLS, TrustSec policies, TACACS, and AAA configuration on Network Access Devices (NADs).Oversee the tuning of 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 cloud platforms like Azure/Intune, Active Directory, and third-party ecosystems for device identity/posture, application access, and security controls.Manage the end-to-end certificate lifecycle for network services, ISE portals, and device authentication (Certificate Signing Request generation, CA signing, binding, backups, expiry management).Administer TACACS for secure device management and policy-based access to network infrastructure.Automate network management using Python, Ansible, and REST APIs; create workflows with Cisco DNA Center (DNAC), automate inventory sync with Configuration Management Databases (CMDB) like Freshworks or ServiceNow, and ensure API governance.Implement and support Software-Defined Access (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 IT Service Management (ITSM) tools like JIRA, Freshworks/Freshservice, ServiceNow, and cloud integration with Azure, AWS.Proven automation skills using Python, Ansible, REST APIs; experience integrating with ITSM tools and cloud platforms.Strong troubleshooting, documentation, and time zone coordination abilities; effective communication with cross-functional and global teams.Preferred Qualifications:5+ years network/security engineering experience, 3+ years in secure Cisco environments.Certifications: CCNP Security, CCIE, or equivalent.

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