Role Summary
The L3 Network Engineer is responsible for advanced troubleshooting, architecture design, complex change execution, platform integration, and optimization across enterprise LAN, WLAN, security, and network management systems. They provide technical leadership, mentor L2 engineers, and drive network improvements.
Key Responsibilities
Cisco DNAC (Design + Assurance + Automation)
- Architect and maintain DNAC infrastructure (clusters, HA, patching).
- Build and optimize network provisioning templates and automation workflows.
- Perform root-cause analysis using DNAC Assurance (RF issues, path trace, latency).
- Lead design of SDA fabrics, segmentation, and policy automation.

Cisco ISE (NAC/EAP-TLS/MDM/RADIUS/TACACS)
- Design and maintain ISE deployment: PSN load balancing, certificates, profiling, posture, SGTs.
- Design 802.1X policies, TrustSec/SGACLs, and multi-node architecture.
- Troubleshoot complex authentication issues, certificate chain failures, posture deviations.
- Integrate ISE with MDM tools (Intune, Workspace ONE, Jamf).




- Manage TACACS for network device access policies.

Cisco ThousandEyes
- Architect and deploy enterprise-level TE Endpoint, Cloud, and Enterprise Agents.
- Design synthetic tests for SaaS, WAN, VPN, and application monitoring.
- Perform deep-dive RCA on packet loss, latency, path-changes and BGP route hops.

Fortinet — FortiGate / FortiAnalyzer / FortiManager
- Architect FortiGate HA, IPSec/SSL VPN, Advanced Routing, SD-WAN.
- Design firewall policies, NAT, UTM, segmentation.
- Perform complex troubleshooting: routing loops, HA failovers, performance issues.
- Build automation scripts via FortiManager APIs.
- Conduct log forensics and incident analysis using FortiAnalyzer.

IT Asset Management
- Build asset lifecycle strategies (EOL/EOS planning, firmware governance).
- Architect CMDB structures for enterprise network assets.
- Create automation for asset discovery and compliance reporting.

LAN & Datacenter Switching (Cis

📌 Network Engineer (Gurugram)
🏢 Velocis Systems Private
📍 Gurugram