Senior Enterprise Network Security Specialist

2 days ago

guntur, India beBeeSecurity Full time

Network Security Engineer PositionWe are seeking a highly skilled Network Security Engineer to join our team. The successful candidate will be responsible for designing, implementing, and maintaining corporate network infrastructure with a focus on security, reliability, and scalability.Key Responsibilities: Design and implement secure network architectures prioritizing data protection and compliance.Lead the deployment of Cisco ISE solutions and architect design for RADIUS/802.1X authentication, EAP-TLS, TrustSec policies, TACACS, and AAA configuration on NADs.Oversee guest/sponsor portals, BYOD onboarding, and custom portal solutions for secure and flexible network access.Plan, document, and execute 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.Engage with InfoSec and IT operations for policy compliance, risk mitigation, and collaborative integration projects.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).Strong troubleshooting, documentation, and time zone coordination abilities; effective communicator 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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