Job Description: L2 Network Engineer - IDC (Nexus/ACI + Azure/GCP)

Job Title: L2 Hybrid Cloud Network Engineer (DC & Cloud)

Experience Level: 3–6 Years Location: RCP

Payroll: Quess Corp Ltd

1. Job Summary:

We are seeking a Hybrid Network Engineer to manage our core Data Center infrastructure and its extension into the Cloud. You will be responsible for the physical Data Center fabric (Cisco Nexus/ACI) and the Cloud Networking layers in Azure and GCP. Your primary focus will be Connectivity and Routing—ensuring seamless traffic flow between our on-premise application servers and cloud resources via ExpressRoute, Cloud Interconnect, and VPNs.

2. Key Responsibilities:

A. On-Premise Data Center Operations (Nexus & ACI)

· ACI Fabric Management: Manage Tenants, VRFs, Bridge Domains, and EPGs within the Cisco ACI APIC dashboard.

· Nexus Switching: configure and troubleshoot Cisco Nexus 9K/7K switches, including vPC (Virtual Port Channel) and Layer 2/Layer 3 interfaces.

· Hybrid Routing: Manage the routing hand-off (BGP/OSPF) between the Data Center Core and the Cloud Edge routers.

· Fabric Maintenance: Perform fabric discovery for new switches and manage code upgrades (ISSU) for NX-OS and ACI firmware.

B. Azure Networking (Infrastructure Focus)

· Connectivity: Provision and troubleshoot Azure ExpressRoute circuits, ensuring stable BGP peering with the on-premise DC.

· Virtual Networks: Manage VNet peering, Subnet sizing, and User Defined Routes (UDRs) to control traffic flow.

· Traffic Management: Configure Azure Load Balancers (L4) and Traffic Manager for routing redundancy.

· Virtual WAN: Manage Azure vWAN hubs and connections for multi-region connectivity.

C. GCP Networking (Infrastructure Focus)

· VPC Management: Configure Google Cloud VPCs, Shared VPCs, and secondary IP ranges for container clusters.

· Hybrid Interconnect: Troubleshoot Cloud Interconnect (Dedicated/Partner) and Cloud Router (BGP sessions).

· Load Balancing: Manage Internal and External Cloud Load Balancers (Network Load Balancing).

D. Infrastructure Troubleshooting

· End-to-End Tracing: Trace packet flow from an on-premise server $\rightarrow$ ACI Fabric $\rightarrow$ WAN/ExpressRoute $\rightarrow$ Azure VNet/GCP VPC.

· Capacity Planning: Monitor bandwidth utilization on ExpressRoute/Interconnect links and recommend upgrades.

3. Technical Skills (Required)

· DC Networking: Expert in Cisco ACI (APIC), Nexus (NX-OS), VXLAN, and vPC.

· Cloud Networking:

o Azure: VNet, ExpressRoute, vWAN, Route Tables, Private Link.

o GCP: VPC, Cloud Interconnect, Cloud Router, Shared VPC.

· Routing Protocols: Strong BGP knowledge (essential for Hybrid Cloud) and OSPF.

· Tools: Familiarity with Azure Network Watcher, GCP Network Intelligence Center, and Wireshark.

4. Soft Skills & Competencies

· Hybrid Mindset: Ability to translate traditional networking concepts (VLAN/VRF) into Cloud concepts (Subnet/VNet).

· Collaboration: Working with Cloud DevOps teams to ensure the network supports their application deployments.

· Change Management: Strict adherence to MOPs for executing routing changes in production.

5. Qualifications

· Education: Bachelor’s degree in IT/Engineering or equivalent.

· Experience: 4–6 years in Networking, with at least 2 years in Hybrid Cloud.

· Certifications (Preferred):

o CCNP Data Center or Enterprise.

o Azure Network Engineer Associate (AZ-700).

o Google Professional Cloud Network Enginee