Domain Architect - Network LAN/WAN

Job Summary

Role 1 - Senior Datacenter Network Build and Migration Engineer Time and Material Role Profile 1. Purpose Fiserv requires a very senior hands-on datacenter network engineer to support APAC datacenter build, migration and relocation activities. The resource will be embedded with the Fiserv Network Services team and will work under Fiserv technical direction on a time and material basis. The role is intended for an expert-level engineer who can operate independently in very large and complex network environments, take ownership quickly, produce high-quality implementation artefacts, and support production cutovers without needing close supervision. 2. Engagement Model • Commercial model: time and material. • Fiserv retains technical ownership, architecture ownership and change approval authority. • The supplier provides a named engineer, availability commitment, replacement process and delivery governance. • The engineer will work as an extension of the Fiserv team and will be directed through Fiserv project, operational and change governance. • Work will include design-readiness review, implementation support, migration planning, change preparation, approved change execution, documentation and stabilization support. • All production activity must be executed through approved Fiserv change processes and agreed implementation windows. 3. 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 desig

Key Responsibilities

Role 1 - Senior Datacenter Network Build and Migration Engineer Time and Material Role Profile 1. Purpose Fiserv requires a very senior hands-on datacenter network engineer to support APAC datacenter build, migration and relocation activities. The resource will be embedded with the Fiserv Network Services team and will work under Fiserv technical direction on a time and material basis. The role is intended for an expert-level engineer who can operate independently in very large and complex network environments, take ownership quickly, produce high-quality implementation artefacts, and support production cutovers without needing close supervision. 2. Engagement Model • Commercial model: time and material. • Fiserv retains technical ownership, architecture ownership and change approval authority. • The supplier provides a named engineer, availability commitment, replacement process and delivery governance. • The engineer will work as an extension of the Fiserv team and will be directed through Fiserv project, operational and change governance. • Work will include design-readiness review, implementation support, migration planning, change preparation, approved change execution, documentation and stabilization support. • All production activity must be executed through approved Fiserv change processes and agreed implementation windows. 3. 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 desig

Skill Requirements

Role 1 - Senior Datacenter Network Build and Migration Engineer Time and Material Role Profile 1. Purpose Fiserv requires a very senior hands-on datacenter network engineer to support APAC datacenter build, migration and relocation activities. The resource will be embedded with the Fiserv Network Services team and will work under Fiserv technical direction on a time and material basis. The role is intended for an expert-level engineer who can operate independently in very large and complex network environments, take ownership quickly, produce high-quality implementation artefacts, and support production cutovers without needing close supervision. 2. Engagement Model • Commercial model: time and material. • Fiserv retains technical ownership, architecture ownership and change approval authority. • The supplier provides a named engineer, availability commitment, replacement process and delivery governance. • The engineer will work as an extension of the Fiserv team and will be directed through Fiserv project, operational and change governance. • Work will include design-readiness review, implementation support, migration planning, change preparation, approved change execution, documentation and stabilization support. • All production activity must be executed through approved Fiserv change processes and agreed implementation windows. 3. 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 desig

Other Requirements

Role 1 - Senior Datacenter Network Build and Migration Engineer Time and Material Role Profile 1. Purpose Fiserv requires a very senior hands-on datacenter network engineer to support APAC datacenter build, migration and relocation activities. The resource will be embedded with the Fiserv Network Services team and will work under Fiserv technical direction on a time and material basis. The role is intended for an expert-level engineer who can operate independently in very large and complex network environments, take ownership quickly, produce high-quality implementation artefacts, and support production cutovers without needing close supervision. 2. Engagement Model • Commercial model: time and material. • Fiserv retains technical ownership, architecture ownership and change approval authority. • The supplier provides a named engineer, availability commitment, replacement process and delivery governance. • The engineer will work as an extension of the Fiserv team and will be directed through Fiserv project, operational and change governance. • Work will include design-readiness review, implementation support, migration planning, change preparation, approved change execution, documentation and stabilization support. • All production activity must be executed through approved Fiserv change processes and agreed implementation windows. 3. 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 desig