Job Description Senior Network Engineer (L3) / Network Specialist

Position Title

Senior Network Engineer (L3) Enterprise Networking & Security

Location

Noida

Experience

7–10 Years

Employment Type

Full-Time

About the Role

We are seeking a highly skilled Senior Network Engineer (L3) to join our enterprise networking team and support the design, implementation, optimization, and troubleshooting of complex global network environments. The ideal candidate will possess deep expertise in routing, switching, SD-WAN, network security, and enterprise infrastructure operations, with the ability to manage critical incidents and drive network transformation initiatives.

This role offers exposure to large-scale enterprise networks, advanced security technologies, network modernization programs, and collaboration with global stakeholders.

Key Responsibilities

Network Design & Operations

- Design, implement, and maintain enterprise network infrastructure across data centers, branch offices, cloud, and hybrid environments.
- Manage and support Cisco routers, switches, wireless infrastructure, Palo Alto firewalls, and WAN technologies.
- Configure, optimize, and troubleshoot routing and switching environments involving BGP, OSPF, EIGRP, MPLS, VLANs, VSS, and network segmentation.
- Support SD-WAN deployments, primarily Versa SD-WAN, including configuration, implementation, and troubleshooting.

Incident Management & Troubleshooting

- Perform advanced L2/L3 troubleshooting for complex network incidents.
- Conduct packet analysis, root cause analysis, and performance diagnostics.
- Ensure timely resolution of incidents while adhering to defined SLAs and operational standards.




- Participate in major incident management and escalation processes.

Network Security

- Implement and manage enterprise security solutions including:
- Palo Alto Firewalls
- Cisco ASA Firewalls
- Site-to-Site VPNs
- Remote Access VPNs
- Network Access Controls

- Maintain firewall policies, security standards, and network segmentation strategies.
- Support security and compliance requirements, including PCI-regulated environments.

Performance & Optimization

- Monitor network performance and availability across global environments.
- Drive proactive improvements to network stability, reliability, and bandwidth optimization.
- Support capacity planning and IP address management activities.
- Recommend architecture enhancements and cost-optimization opportunities.

Documentation & Collaboration

- Maintain accurate network documentation, architecture diagrams, SOPs, and incident reports.
- Collaborate with global teams, vendors, and business stakeholders for network enhancements and issue resolution.
- Provide technical leadership, mentoring, and knowledge sharing for junior engineers.

Automation & Innovation

- Contribute to network automation initiatives using Python, Ansible, and related tools.




- Identify opportunities to improve operational efficiency through automation and process optimization.

Required Skills & Experience

Networking

- 7+ years of hands-on experience in enterprise network engineering or L3 network operations.
- Solid expertise in:
- BGP
- OSPF
- EIGRP
- MPLS
- Routing & Switching
- VLANs
- VSS
- WAN Technologies

SD-WAN

- Hands-on experience with SD-WAN technologies.
- Versa SD-WAN experience strongly preferred.

Security

- Strong experience with:
- Palo Alto Firewalls
- Cisco ASA
- VPN Technologies
- Firewall Policy Management
- Network Security Operations

Wireless & Infrastructure

- Experience with enterprise wireless controllers and wireless networking environments.
- Exposure to large-scale enterprise and data center networks.

Troubleshooting

- Expertise in:
- L3 troubleshooting
- Packet captures and analysis
- Root Cause Analysis (RCA)
- Incident and Problem Management

Preferred Qualifications

- Experience supporting PCI-compliant or highly regulated environments.
- Exposure to cloud networking and hybrid infrastructure environments.
- Experience with network automation using Python and/or Ansible.
- Knowledge of network monitoring and management tools.
- Relevant certifications are highly desirable:
- CCNP Enterprise
- CCIE Enterprise Infrastructure
- Palo Alto Certifications (PCNSE)
- Versa Certifications

Preferred Background

Candidates from the following environments are preferred:

- Large Enterprises
- Global Capability Centers (GCCs)
- Product-Based Organizations
- Managed Network Services Providers
- Enterprise NOCs supporting global customers

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