Tower Lead - Wireless Networking
India
Apply now
Job Description
Tower Lead - Wireless Networking
Pune, Maharashtra

Job Summary

Seniority and Profile • Expert-level datacenter network engineer with deep hands-on implementation and troubleshooting capability. • Expected to operate at the level normally associated with senior enterprise or service-provider network experts, without requiring the role description to reference specific certifications. • Able to work independently, challenge weak assumptions constructively, and turn ambiguous technical requirements into executable plans. • Proven experience in very large enterprise, service-provider or hyperscale-style environments. Hyperscaler experience is a strong advantage. • Strong ownership mindset, high urgency, and willingness to prove capability quickly through delivery quality. • Comfortable working in high-pressure production environments, including out-of-hours and weekend change windows when required. 4. Core Responsibilities • Support datacenter network build and migration activities across Cisco, Arista and associated routing environments. • Review HLD/LLD material and identify implementation gaps, dependency gaps, risk points and required clarifications. • Prepare or validate low-level implementation plans, migration runbooks, method of procedure documents, rollback plans and validation plans. • Configure, validate and troubleshoot datacenter switching, routing, fabric and edge network components as directed by Fiserv. • Support migration from legacy Cisco/Nexus paths and current Arista/Cisco/NFV environments into target datacenter architectures. • Support secure DMZ, firewall, ADC, NFV, cloud and client connectivity integration from a network perspective. • Drive practical issue resolution during build, test, cutover and stabilization phases. • Create and maintain clear technical documentation, including as-built records, topology updates, port mappings, route/VRF/VLAN mapping and handover material. • Collaborate with Product Engineering, security, firewall, ADC, operations, application, carrier and client-facing teams. • Use automation, scripting or structured tooling where practical to improve repeatability, validation and documentation quality. 5. Required Technical Capabilities • Very strong hands-on experience with Cisco Nexus datacenter switching platforms. • Very strong hands-on experience with Arista EOS datacenter fabric environments. • Strong spine-leaf, fabric, aggregation/access, secure DMZ and datacenter interconnect understanding. • Advanced routing capability across BGP, OSPF, IS-IS, route policy, redistribution, segmentation and traffic engineering. • Strong practical experience with VRFs, VLANs, trunks, LACP, port channels, MLAG/vPC-style designs and redundant datacenter connectivity. • Working knowledge of MPLS, VXLAN/EVPN, FabricPath or equivalent datacenter/transport technologies where relevant. • Experience with migration of production traffic paths, overlapping services, NAT dependencies, client/application flows and rollback planning. • Awareness of Palo Alto firewall, F5 ADC, NFV and cloud connectivity integration requirements, sufficient to coordinate effectively with specialist teams. • Experience with AWS/Azure connectivity concepts such as Direct Connect, ExpressRoute, VPN routing and cloud route control. • Strong troubleshooting skills across L1-L4, routing, forwarding, asymmetric paths, MTU, packet loss, failover and performance issues. • Ability to produce high-quality implementation documentation and evidence suitable for change governance and operational handover. 6. Preferred Capabilities • Experience in hyperscale, global financial services, large service-provider or similarly complex network environments. • Experience with payment environments, PCI-sensitive segmentation or highly controlled production networks. • Experience with SD-WAN, internet edge, cloud backbone or international backbone environments. • Automation capability using Python, Ansible, APIs or similar tooling. • Experience improving operational methods, runbooks, validation tooling and rep

Key Responsibilities

Seniority and Profile • Expert-level datacenter network engineer with deep hands-on implementation and troubleshooting capability. • Expected to operate at the level normally associated with senior enterprise or service-provider network experts, without requiring the role description to reference specific certifications. • Able to work independently, challenge weak assumptions constructively, and turn ambiguous technical requirements into executable plans. • Proven experience in very large enterprise, service-provider or hyperscale-style environments. Hyperscaler experience is a strong advantage. • Strong ownership mindset, high urgency, and willingness to prove capability quickly through delivery quality. • Comfortable working in high-pressure production environments, including out-of-hours and weekend change windows when required. 4. Core Responsibilities • Support datacenter network build and migration activities across Cisco, Arista and associated routing environments. • Review HLD/LLD material and identify implementation gaps, dependency gaps, risk points and required clarifications. • Prepare or validate low-level implementation plans, migration runbooks, method of procedure documents, rollback plans and validation plans. • Configure, validate and troubleshoot datacenter switching, routing, fabric and edge network components as directed by Fiserv. • Support migration from legacy Cisco/Nexus paths and current Arista/Cisco/NFV environments into target datacenter architectures. • Support secure DMZ, firewall, ADC, NFV, cloud and client connectivity integration from a network perspective. • Drive practical issue resolution during build, test, cutover and stabilization phases. • Create and maintain clear technical documentation, including as-built records, topology updates, port mappings, route/VRF/VLAN mapping and handover material. • Collaborate with Product Engineering, security, firewall, ADC, operations, application, carrier and client-facing teams. • Use automation, scripting or structured tooling where practical to improve repeatability, validation and documentation quality. 5. Required Technical Capabilities • Very strong hands-on experience with Cisco Nexus datacenter switching platforms. • Very strong hands-on experience with Arista EOS datacenter fabric environments. • Strong spine-leaf, fabric, aggregation/access, secure DMZ and datacenter interconnect understanding. • Advanced routing capability across BGP, OSPF, IS-IS, route policy, redistribution, segmentation and traffic engineering. • Strong practical experience with VRFs, VLANs, trunks, LACP, port channels, MLAG/vPC-style designs and redundant datacenter connectivity. • Working knowledge of MPLS, VXLAN/EVPN, FabricPath or equivalent datacenter/transport technologies where relevant. • Experience with migration of production traffic paths, overlapping services, NAT dependencies, client/application flows and rollback planning. • Awareness of Palo Alto firewall, F5 ADC, NFV and cloud connectivity integration requirements, sufficient to coordinate effectively with specialist teams. • Experience with AWS/Azure connectivity concepts such as Direct Connect, ExpressRoute, VPN routing and cloud route control. • Strong troubleshooting skills across L1-L4, routing, forwarding, asymmetric paths, MTU, packet loss, failover and performance issues. • Ability to produce high-quality implementation documentation and evidence suitable for change governance and operational handover. 6. Preferred Capabilities • Experience in hyperscale, global financial services, large service-provider or similarly complex network environments. • Experience with payment environments, PCI-sensitive segmentation or highly controlled production networks. • Experience with SD-WAN, internet edge, cloud backbone or international backbone environments. • Automation capability using Python, Ansible, APIs or similar tooling. • Experience improving operational methods, runbooks, validation tooling and rep

Skill Requirements

Seniority and Profile • Expert-level datacenter network engineer with deep hands-on implementation and troubleshooting capability. • Expected to operate at the level normally associated with senior enterprise or service-provider network experts, without requiring the role description to reference specific certifications. • Able to work independently, challenge weak assumptions constructively, and turn ambiguous technical requirements into executable plans. • Proven experience in very large enterprise, service-provider or hyperscale-style environments. Hyperscaler experience is a strong advantage. • Strong ownership mindset, high urgency, and willingness to prove capability quickly through delivery quality. • Comfortable working in high-pressure production environments, including out-of-hours and weekend change windows when required. 4. Core Responsibilities • Support datacenter network build and migration activities across Cisco, Arista and associated routing environments. • Review HLD/LLD material and identify implementation gaps, dependency gaps, risk points and required clarifications. • Prepare or validate low-level implementation plans, migration runbooks, method of procedure documents, rollback plans and validation plans. • Configure, validate and troubleshoot datacenter switching, routing, fabric and edge network components as directed by Fiserv. • Support migration from legacy Cisco/Nexus paths and current Arista/Cisco/NFV environments into target datacenter architectures. • Support secure DMZ, firewall, ADC, NFV, cloud and client connectivity integration from a network perspective. • Drive practical issue resolution during build, test, cutover and stabilization phases. • Create and maintain clear technical documentation, including as-built records, topology updates, port mappings, route/VRF/VLAN mapping and handover material. • Collaborate with Product Engineering, security, firewall, ADC, operations, application, carrier and client-facing teams. • Use automation, scripting or structured tooling where practical to improve repeatability, validation and documentation quality. 5. Required Technical Capabilities • Very strong hands-on experience with Cisco Nexus datacenter switching platforms. • Very strong hands-on experience with Arista EOS datacenter fabric environments. • Strong spine-leaf, fabric, aggregation/access, secure DMZ and datacenter interconnect understanding. • Advanced routing capability across BGP, OSPF, IS-IS, route policy, redistribution, segmentation and traffic engineering. • Strong practical experience with VRFs, VLANs, trunks, LACP, port channels, MLAG/vPC-style designs and redundant datacenter connectivity. • Working knowledge of MPLS, VXLAN/EVPN, FabricPath or equivalent datacenter/transport technologies where relevant. • Experience with migration of production traffic paths, overlapping services, NAT dependencies, client/application flows and rollback planning. • Awareness of Palo Alto firewall, F5 ADC, NFV and cloud connectivity integration requirements, sufficient to coordinate effectively with specialist teams. • Experience with AWS/Azure connectivity concepts such as Direct Connect, ExpressRoute, VPN routing and cloud route control. • Strong troubleshooting skills across L1-L4, routing, forwarding, asymmetric paths, MTU, packet loss, failover and performance issues. • Ability to produce high-quality implementation documentation and evidence suitable for change governance and operational handover. 6. Preferred Capabilities • Experience in hyperscale, global financial services, large service-provider or similarly complex network environments. • Experience with payment environments, PCI-sensitive segmentation or highly controlled production networks. • Experience with SD-WAN, internet edge, cloud backbone or international backbone environments. • Automation capability using Python, Ansible, APIs or similar tooling. • Experience improving operational methods, runbooks, validation tooling and rep

Other Requirements

Seniority and Profile • Expert-level datacenter network engineer with deep hands-on implementation and troubleshooting capability. • Expected to operate at the level normally associated with senior enterprise or service-provider network experts, without requiring the role description to reference specific certifications. • Able to work independently, challenge weak assumptions constructively, and turn ambiguous technical requirements into executable plans. • Proven experience in very large enterprise, service-provider or hyperscale-style environments. Hyperscaler experience is a strong advantage. • Strong ownership mindset, high urgency, and willingness to prove capability quickly through delivery quality. • Comfortable working in high-pressure production environments, including out-of-hours and weekend change windows when required. 4. Core Responsibilities • Support datacenter network build and migration activities across Cisco, Arista and associated routing environments. • Review HLD/LLD material and identify implementation gaps, dependency gaps, risk points and required clarifications. • Prepare or validate low-level implementation plans, migration runbooks, method of procedure documents, rollback plans and validation plans. • Configure, validate and troubleshoot datacenter switching, routing, fabric and edge network components as directed by Fiserv. • Support migration from legacy Cisco/Nexus paths and current Arista/Cisco/NFV environments into target datacenter architectures. • Support secure DMZ, firewall, ADC, NFV, cloud and client connectivity integration from a network perspective. • Drive practical issue resolution during build, test, cutover and stabilization phases. • Create and maintain clear technical documentation, including as-built records, topology updates, port mappings, route/VRF/VLAN mapping and handover material. • Collaborate with Product Engineering, security, firewall, ADC, operations, application, carrier and client-facing teams. • Use automation, scripting or structured tooling where practical to improve repeatability, validation and documentation quality. 5. Required Technical Capabilities • Very strong hands-on experience with Cisco Nexus datacenter switching platforms. • Very strong hands-on experience with Arista EOS datacenter fabric environments. • Strong spine-leaf, fabric, aggregation/access, secure DMZ and datacenter interconnect understanding. • Advanced routing capability across BGP, OSPF, IS-IS, route policy, redistribution, segmentation and traffic engineering. • Strong practical experience with VRFs, VLANs, trunks, LACP, port channels, MLAG/vPC-style designs and redundant datacenter connectivity. • Working knowledge of MPLS, VXLAN/EVPN, FabricPath or equivalent datacenter/transport technologies where relevant. • Experience with migration of production traffic paths, overlapping services, NAT dependencies, client/application flows and rollback planning. • Awareness of Palo Alto firewall, F5 ADC, NFV and cloud connectivity integration requirements, sufficient to coordinate effectively with specialist teams. • Experience with AWS/Azure connectivity concepts such as Direct Connect, ExpressRoute, VPN routing and cloud route control. • Strong troubleshooting skills across L1-L4, routing, forwarding, asymmetric paths, MTU, packet loss, failover and performance issues. • Ability to produce high-quality implementation documentation and evidence suitable for change governance and operational handover. 6. Preferred Capabilities • Experience in hyperscale, global financial services, large service-provider or similarly complex network environments. • Experience with payment environments, PCI-sensitive segmentation or highly controlled production networks. • Experience with SD-WAN, internet edge, cloud backbone or international backbone environments. • Automation capability using Python, Ansible, APIs or similar tooling. • Experience improving operational methods, runbooks, validation tooling and rep
Apply now
Information at a Glance

Why HCLTech?

At HCLTech, you'll supercharge your potential. You'll find your career. And you'll find your spark. All at a place that knows that helping its customers stay on top starts by putting its people first.

HCLTech is a global technology company, home to more than 223,000 people across 60 countries, delivering industry-leading capabilities centered around digital, engineering, cloud and AI, powered by a broad portfolio of technology services and products. We work with clients across all major verticals, providing industry solutions for Financial Services, Manufacturing, Life Sciences and Healthcare, Technology and Services, Telecom and Media, Retail and CPG, and Public Services. Consolidated revenues as of 12 months ending June 2026 totaled $14.8 billion.