Job Summary

We are looking for an experienced
Core Network Engineer
to support a large-scale APAC Network Fleet Management Program involving
Cisco Nexus hardware refreshes, Arista MOS-to-EOS migrations, and Cisco Catalyst/Nexus management network refresh
activities across multiple
global data centers.

The engineer will be responsible for planning, migration execution, configuration management, validation, troubleshooting, and technical ownership throughout the project lifecycle.

Job Location - Mumbai (Chandivali)

Responsibilities

Planning & Discovery
- Participate in technical discovery workshops.
- Validate device inventory, interface mappings, and network topology.
- Review configuration baselines and migration prerequisites.
- Assess site-specific technical dependencies.

Network Migration
- Execute Cisco Nexus 3172 hardware refreshes.
- Perform Arista 7130 MOS to EOS migrations.
- Refresh Cisco Catalyst 3850 & Nexus 3048 management networks.
- Execute software upgrades and firmware migrations.
- Manage switch reloads and maintenance window activities.

Configuration Management




- Take complete configuration backups.
- Capture routing tables, MAC tables, STP topology, CPU & Memory utilization.
- Stage software images via SFTP/HTTPS.
- Push production configurations during cutover.

Validation
- Verify
- BGP
- OSPF
- VLANs
- Port Channels
- Interface status
- Optical links
- Trunk configurations
- TACACS+
- RADIUS
- MFA
- SNMP
- Syslog

Troubleshooting
- Analyze routing issues.
- Interface flaps.
- Packet drops.
- Optical failures.
- Hardware issues.
- Boot failures.
- OEM escalation (Cisco TAC / Arista TAC).

Documentation
- Prepare operational runbooks.
- Update Fleet Execution Tracker.
- Capture CLI logs.
- Prepare validation reports.
- Support project closure documentation.

Required Technical Skills

Networking
- Cisco Nexus 3K Series
- Cisco Catalyst 3850
- Nexus 3048
- Arista 7130

Routing & Switching
- BGP
- OSPF
- STP
- VLAN
- VPC
- Port Channel
- VRF

📌 Core Network Engineer (Mumbai)
🏢 NuSummit
📍 Mumbai