Senior Network Engineer

ML · India

Senior Datacenter Network Build and Migration Engineer Contract engagement | Pune, Chennai, Bengaluru, Mumbai | On-site

We're recruiting for a global payments fintech expanding its APAC datacenter footprint and consolidating legacy environments into a target architecture.

The estate carries live transaction traffic for banks, merchants and financial institutions. Every build and every migration runs through strict change control, and unplanned service impact isn't an option.

This is a hands-on engineering role. The client owns the architecture and the change approval. You'll work inside their Network Services team, turn HLD and LLD material into workable implementation plans, and support production cutovers with minimal supervision. If you're after a design or oversight position, this isn't it.

The work spans build, migration and relocation activity across Cisco and Arista: preparing runbooks, methods of procedure, rollback and validation plans; configuring and troubleshooting switching, routing and fabric components; and documenting to a standard the operations team can still use after the project closes.

Essential experience

• Very strong hands-on Cisco Nexus datacenter switching
• Very strong hands-on Arista EOS datacenter fabric
• Experience in hyperscale, global financial services, large service-provider or comparably complex network environments. Payments, PCI-sensitive segmentation or tightly controlled production networks are particularly relevant
• Spine-leaf and fabric designs, aggregation and access layers, secure DMZ and datacenter interconnect
• Advanced BGP, OSPF and IS-IS, including route policy, redistribution, segmentation and traffic engineering
• VRFs, VLANs, trunks, LACP, port channels, MLAG and vPC-style designs, redundant datacenter connectivity
• MPLS, VXLAN/EVPN, FabricPath or equivalent datacenter and transport technologies
• Migrating production traffic paths, covering overlapping services, NAT dependencies, client and application flows, and rollback planning
• Enough awareness of Palo Alto firewall, F5 ADC, NFV and cloud connectivity to coordinate with the specialist teams
• AWS and Azure connectivity: Direct Connect, ExpressRoute, VPN routing and cloud route control
• Troubleshooting L1 to L4, covering routing, forwarding, asymmetric paths, MTU, packet loss, failover and performance
• Documentation and implementation evidence to a standard that stands up to change governance and operational handover
• Automation using Python, Ansible, APIs or similar, and a track record of improving runbooks, validation tooling and repeatable implementation patterns

Exposure to SD-WAN, internet edge, cloud backbone or international backbone environments is an advantage.

Apply through LinkedIn or contact me directly.