L3 Senior Network Engineer

Department: Managed Services / NOC

Job Location: Mumbai

Position Type: Permanent (Full-time)

Working Days & Hours: Monday to Friday | 9:30 AM to 6:30 PM

Travel Required: No

Role Summary

We are seeking a highly skilled L3 Senior Network Engineer to provide advanced operational support, technical leadership, and escalation management across enterprise network infrastructures. In this role, you will handle critical incidents, perform deep-dive troubleshooting, manage change and capacity requirements, and drive service improvements across hybrid, multi-vendor environments.

This position requires extensive hands-on expertise in enterprise routing, switching, data center networking, and software-defined networking—specifically with Cisco Viptela SD-WAN / Versa SD-WAN, Cisco SD-Access (DNAC), and Cisco Nexus platforms.

Key ResponsibilitiesIncident & Escalation Management

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Act as the primary L3 technical escalation point for NOC L1 and L2 engineering teams on complex, business-critical network issues.

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Lead the rapid resolution of network incidents and service requests while strictly maintaining SLA compliance.

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Investigate advanced routing, switching, WAN, LAN, wireless, and data center incidents to ensure timely, sustainable fixes.

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Ownership of major incidents, emergency outages, and high-impact outages to minimize overall business disruption.

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Perform Root Cause Analysis (RCA) on recurring or critical incidents and execute long-term preventive/corrective actions.

Operations & Technical Governance

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Deliver advanced support for global enterprise networks spanning branch, campus, data center, and WAN environments.

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Guide NOC L2 engineers on complex troubleshooting and configuration tasks.

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Perform lifecycle management, configuration adjustments,



and administration in accordance with operational standards and security policies.

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Conduct strict Quality Assurance (QA) reviews on incident resolutions, system changes, and new configurations.

Performance Monitoring & Capacity Optimization

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Analyze network health metrics, tracking bandwidth, latency, device health, and throughput bottlenecks.

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Execute capacity planning initiatives by evaluating current utilization rates and forecasting future infrastructure needs.

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Formulate strategic recommendations for network optimization, performance tuning, and operational resilience.

Change Management & Continuous Improvement

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Play a central role in change management processes—conducting technical impact assessments, peer reviews, implementation, and post-change validation.

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Execute complex configuration changes following established enterprise best practices.

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Support network migration, expansion, hardware refresh, and technology upgrade projects in collaboration with cross-functional teams.

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Drive continuous service improvement (CSI) initiatives and optimize NOC operational workflows.

Collaboration & Knowledge Sharing

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Partner with Network Architects, Security Teams, Engineering Leads, and third-party vendors to resolve systemic issues.

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Maintain accurate, up-to-date technical documentation, standard operating procedures (SOPs), runbooks, and knowledge base (KB) articles.

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Mentor, coach, and support skill development for L1 and L2 engineers to build overall team capability.

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Provide direct,



clear communication to clients and stakeholders during critical incidents and change windows.

Skills & RequirementsMandatory Technical Skills

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Routing & Switching: Deep hands-on experience with L2/L3 enterprise and data center network operations (VLANs, STP, VTP, Data Center Zones, VRF/Virtual Routing, and cabling standards).

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Software-Defined Networking (SDN): Proven operational experience with Next-Gen SDN platforms, specifically Cisco Viptela SD-WAN (or Versa SD-WAN) and Cisco SD-Access (DNAC).

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Data Center Hardware: Direct hands-on experience configuring and operating Cisco Nexus and Cisco Catalyst switches.

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Managed Services: Background working within multi-vendor, hybrid enterprise managed service or NOC operations.

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Tools: Proficiency with enterprise fault management, performance monitoring, and capacity planning tools.

Preferred & Added Advantage

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Experience with Data Center architecture and operations.

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Familiarity with network automation, orchestration, and API-driven configuration management.

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Exposure to modern network observability platforms.

Qualified & Functional Competencies

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Thorough understanding of ITIL frameworks (Incident, Problem, and Change Management).

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Familiarity with IT compliance and regulatory standards in enterprise environments.

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Exceptional analytical and diagnostic skills under high-pressure, critical outage conditions.

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Excellent verbal and written communication skills with strong stakeholder management capability.

Education & Certifications

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Education: Bachelor’s degree in Engineering (B.E./B.Tech) or any relevant graduation degree.

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Certifications (Preferred): Active CCNP Enterprise / Data Center, or CCIE (Enterprise / Routing & Switching / Data Center).

📌 Senior Network Engineer (Mumbai)
🏢 Recognized
📍 Mumbai