Network EngineerConfidential • Gurgaon / Gurugram
Network Engineer
Confidential • Gurgaon / Gurugram
30+ days ago
Job descriptionDesign 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. 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. 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. Build asset lifecycle strategies (EOL / EOS planning, firmware governance). Architect CMDB structures for enterprise network assets. Create automation for asset discovery and compliance reporting. Architect L2 / L3 networks (HSRP / VRRP, OSPF, BGP, VPC, FabricPath, VXLAN). Design and deploy datacenter solutions (spine-leaf, Nexus 9k / 7k). Perform deep analysis of STP, convergence, load-balancing, multicast. Lead major migrations and network refresh projects. Develop automation using Python, Ansible, REST APIs, Netmiko, NAPALM. Build custom scripts for configuration deployment, compliance checks, and reporting. Create CI / CD pipelines for network automation. Architect scalable and redundant DHCP architectures. Troubleshoot complex relay, failover, and IPAM integration. Maintain network intrusion prevention systems. Tune signatures, configure IPS policies, and reduce false positives. Analyze attack patterns, perform RCA, and support SOC teams. Architect enterprise wireless deployments (RF design, surveys, FlexConnect, HA SSO). Troubleshoot advanced RF issues (co-channel interference, power / channel planning). Integrate wireless with ISE (central / web auth, profiling, posture). Mentor L1 / L2 teams. Handle major incidents and bridge calls. Work with vendors (Cisco / TAC, Fortinet Support) for escalations. Prepare HLD / LLD documents, SOPs, MOPs. Upto 14 years relevant experience of enterprise network engineering experience. CCNP / CCIE (Enterprise / Security) Fortinet NSE4–NSE7 Cisco ENCOR / ENARSI CWNP (for wireless roles)'
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)
Cisco ThousandEyes
Fortinet — FortiGate / FortiAnalyzer / FortiManager
IT Asset Management
LAN & Datacenter Switching (Cisco / Brocade / Nexus)
Scripting & Automation
DHCP / DNS Architect-Level Responsibilities
NIPS
Cisco WLC & Wireless
Soft Skills & Leadership
Experience
Certifications preferred :
Skills Required
Tcp / ip, Routing Protocols, Network Security, Cisco Ios, Bgp
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Network Engineer • Gurgaon / Gurugram
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