Network L3 Engineer Routing & Switching

We are seeking a highly experienced Network L3 Engineer - Routing & Switching with strong expertise in enterprise networking, SD-Access, and Cisco technologies. The role involves advanced network design, troubleshooting, and development of lab frameworks for IoT integration and validation.

Location & Work Mode

• Location: New York
• Work Mode: Hybrid (3 days/week onsite)
• Condition: Onsite requirement applies post Background Check (BGC)

Experience Required

• 8-10+ years of experience in enterprise networking
• Senior-level expertise in Routing & Switching

Technical Skills

Core Networking

• Strong expertise in Routing & Switching (L2/L3)
• Deep knowledge of protocols:
  • BGP, OSPF, Spanning Tree Protocol (STP)
  • Multicast (IGMPv2/v3, PIM, RP - Static & Anycast)

Networking Platforms

• Hands-on experience with:
  • Cisco ISR, ASR1K, ASR9K
  • Catalyst 9K, Nexus 9K
  • Arista switches and platforms

SDN & Advanced Networking

• SD-Access (SDA) - Mandatory
• Cisco DNA Center (DNAC) - Mandatory
• VXLAN - Mandatory
• Knowledge of:
  • SD-WAN
  • DMVPN
  • IPSEC
  • MACSEC

Security & Access Control

• Cisco ISE (Identity Services Engine)
• 802.1X / NAC (Network Access Control)
• TrustSec & network segmentation
• TACACS+, DNS, DHCP

Automation & Tools

• Ansible (Preferred)
• Network automation exposure

Infrastructure

• Cabling & optics:
  • 10G / 25G / 40G / 50G / 100G
  • Breakout cables and panels

Experience & Domain Knowledge

• Strong hands-on experience in enterprise network environments
• Experience with IoT deployments and communication protocols
• Expertise in troubleshooting network connectivity for IoT devices/sensors
• Proven experience in SD-Access deployment and support

Certifications

• Cisco CCIE (Lab Certification) - Mandatory

Roles & Responsibilities

Network Engineering

• Design, configure, and troubleshoot enterprise network infrastructure
• Implement and manage Routing & Switching environments
• Deploy and maintain SD-Access and VXLAN-based networks

IoT & Lab Development

• Develop lab frameworks to integrate IoT endpoints with enterprise networks
• Identify communication scenarios between edge and endpoint devices
• Validate:
  • Hardware platforms
  • Software features
  • Endpoint functionality

Testing & Validation

• Design and execute tests for:
  • Data collection
  • Aggregation
  • Analytics capabilities
• Oversee network validation and certification activities

Security & Segmentation

• Implement NAC, TrustSec, and network segmentation
• Configure 802.1X authentication and access control policies

Collaboration & Governance

• Work with cross-functional technical teams and stakeholders
• Provide documentation, reporting, and status updates
• Ensure adherence to quality and delivery timelines

Soft Skills

• Strong communication skills (written & verbal)
• Excellent stakeholder coordination
• Ability to work in a collaborative, fast-paced environment