CISCO Nexus Admin - Network Engineer (Chennai)

Company: WillWare Technologies Role: CISCO Nexus Admin - L3/L2 Network Engineer - Enterprise Connectivity (SDN / Security / Wireless) Experience: 7+ Years Location: Chennai, Bangalore, Hyderabad, Pune, Noida, Gurugram, Mumbai Work Mode: Hybrid Job Description: Mandatory Skills: CISCO Nexus Admin . Primary Skill - Cisco Nexus admin, L2/L3 switching & routing, CCNA / CCNP Enterprise certification, Cisco ISE, Cisco SD-Access, and Catalyst Center Secondary Skill - Network security and firewall technologies , FortiGate Firewalls - Firewall policies, VPNs, routing, multi-VDOM. L3/L2 Network Engineer - Enterprise Connectivity (SDN / Security / Wireless) Role Overview: As an L3/L2 Network Engineer, you will be responsible for the implementation, monitoring, and troubleshooting of enterprise connectivity solutions across campus and data center environments. You will support software-defined networking, security infrastructure, and cloud-integrated services to ensure reliable, secure, and scalable operations. This role focuses on day-to-day operations, incident resolution, and network performance optimization, while collaborating with engineering, security, and operations teams to maintain a reliable and resilient enterprise network ecosystem. Key Responsibilities Operations & Support - Monitor and maintain enterprise network infrastructure across campus and data center environments - Perform L2/L3 troubleshooting of network, security, and connectivity issues - Ensure adherence to incident management and escalation processes Incident & Problem Management - Diagnose and resolve: - Network outages and performance issues - Routing, firewall, wireless, and SDN-related incidents - Conduct root cause analysis (RCA) and support problem management activities - Work on major incidents in coordination with cross-functional teams Network Monitoring & Performance - Monitor network health using tools and dashboards (Catalyst Center, FortiAnalyzer, etc.) - Identify performance bottlenecks and implement optimization measures - Ensure high availability and uptime of services Configuration & Change Management - Execute network configurations and changes in line with change management processes - Assist in deployment and validation of network upgrades and enhancements - Maintain configuration standards and documentation Security & Compliance - Support implementation of: - Firewall policies - Network segmentation - Identity and access control (ISE) - Ensure compliance with enterprise security standards Collaboration & Continuous Improvement - Work closely with: - Architects and engineering teams for implementation - Security teams for compliance - Operations teams for service continuity - Contribute to automation and process improvement initiatives Technology Stack / Scope Cisco SD-Access - Troubleshooting SDA fabric, VXLAN overlays, SDA policies Catalyst Center (DNA Center) - Network monitoring, provisioning support, assurance workflows NDFC (Nexus Dashboard Fabric Controller) - Monitoring and troubleshooting VXLAN EVPN data center fabrics Cisco ISE - AAA troubleshooting, endpoint profiling issues FortiManager - Firewall configuration management and policy updates FortiAnalyzer - Log monitoring, reporting, and security analysis FortiGate Firewalls - Firewall policies, VPNs, routing, multi-VDOM BGP Routing - Monitoring and troubleshooting eBGP/iBGP Aruba Wireless - APs, controllers, SSIDs, ClearPass integration (L3_L2 Netw.eer - JD 1 | Word) Required Skills & Qualifications Technical Skills - Strong experience in: o Enterprise networking (L2/L3 switching & routing) o Network troubleshooting and incident resolution - Knowledge of: o SDN concepts and Cisco SD-Access o Routing protocols (BGP, OSPF - preferred) o Network security and firewall technologies o Wireless networking (Aruba preferred) Platform Expertise - Hands-on experience with: o Cisco SD-Access and Catalyst Center o Cisco ISE o Fortinet stack (FortiGate, FortiManager, FortiAnalyzer) o Data center networking (VXLAN/EVPN exposure preferred) Additional Skills Basic scripting/automation (Python or similar - preferred) - Understanding of cloud networking concepts (AWS/Azure - preferred) - Familiarity with ITSM tools (e.g., ServiceNow) Experience Requirements - L2 Engineer: 3-5 years of experience in enterprise networking - L3 Engineer: 5-8+ years of experience with advanced troubleshooting and escalation handling - Proven experience in: o Supporting enterprise or data center networks o Handling major incidents and critical issues Behavioral & Soft Skills - Strong problem-solving and analytical skills - Effective communication and stakeholder coordination - Ability to work in 24x7 support environments - Proactive mindset with focus on continuous improvement Preferred Certifications - Cisco (CCNA / CCNP Enterprise) - Fortinet NSE certificati