{"id":1223611,"url":"https://alion.io/job/hcltech-principal-network-engineer","title":"Principal Network Engineer","company":{"id":225,"name":"HCLTech","domain":"hcltech.com","url":"https://alion.io/company/hcltech","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SuccessFactors","truth_index":null},"role":"Networking","role_family":"Networking","seniority":"lead","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"inferred","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Azure","optional":false},{"name":"BGP","optional":false},{"name":"DNS","optional":false},{"name":"MPLS","optional":false},{"name":"OSPF","optional":false},{"name":"Ansible","optional":true},{"name":"Python","optional":true}],"status":"live","first_seen_at":"2026-09-25T13:03:49Z","employer_posted_date":"2026-09-25","last_verified_at":"2026-09-26T23:19:47Z","board_verified":true,"closed_at":null,"days_open":1,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":1},"description":"Job Summary\nRole Purpose Principal Network Engineer within the Global Network Engineering team, responsible for delivering a major Internet Gateway Migration programme across the US and UK regions, owning the low-level design and implementation activities. Working closely with other Network engineers, Network Architects, Security Architects, Operations teams, and suppliers, you will design, build, test, migrate, and troubleshoot complex enterprise network services across Internet, WAN, SD-WAN, cloud, and security domains. This is a hands-on network engineering role. Key Responsibilities\nDesign, build, test, and implement Internet Gateway migration solutions.\nConfigure and troubleshoot complex routing environments including BGP, OSPF, MPLS, VRFs, route redistribution, and traffic engineering.\nPerform deep-dive troubleshooting across Internet edge, SD-WAN, WAN, LAN, cloud, security, and carrier connectivity domains.\nDevelop and execute migration plans, implementation procedures, service cutovers, rollback strategies, and operational acceptance testing.\nPerform detailed dependency analysis across routing, security, DNS, DDI, remote access, cloud connectivity, and carrier services.\nAnalyse technical dependencies and resolve migration blockers across network and security services.\nCreate and review low-level designs, implementation plans, MOPs, and operational documentation.\nWork closely with Network Architects to translate target-state designs into deployable engineering solutions.\nSupport and Lead on major implementation events, service transitions, and high-risk change activities.\nDrive engineering best practice, technical quality, and operational readiness. ________________________________________ Required Skills & Experience\nCCIE (Cisco Certified Internetwork Expert) - Enterprise Infrastructure (mandatory)\nExpert-level BGP knowledge including Internet edge design, route policy, traffic engineering, route filtering, and multi-carrier connectivity.\nExtensive hands-on experience with Cisco enterprise routing and switching platforms.\nProven experience designing and implementing enterprise Internet connectivity solutions.\nStrong SD-WAN engineering experience (Cisco Viptela).\nStrong understanding of OSPF, MPLS, VRFs, QoS, route redistribution, and high-availability network design.\nExperience delivering complex network migrations and transformation programmes.\nExperience integrating enterprise networks with Azure and hybrid-cloud environments.\nAdvanced troubleshooting skills using packet captures, protocol analysis, routing diagnostics, and telemetry tools.\nExperience working directly with ISPs, carriers, and managed service providers.\nExperience producing implementation plans, migration runbooks, and low-level designs. ________________________________________ Desirable Skills\nCCDE or equivalent design experience.\nAzure ExpressRoute and hybrid-cloud networking.\nNetwork automation using tools such as Python, Ansible, NetBrain.\nExperience within Utilities, Energy, Critical National Infrastructure, or highly regulated environments.\nKey Responsibilities\nRole Purpose Principal Network Engineer within the Global Network Engineering team, responsible for delivering a major Internet Gateway Migration programme across the US and UK regions, owning the low-level design and implementation activities. Working closely with other Network engineers, Network Architects, Security Architects, Operations teams, and suppliers, you will design, build, test, migrate, and troubleshoot complex enterprise network services across Internet, WAN, SD-WAN, cloud, and security domains. This is a hands-on network engineering role. Key Responsibilities\nDesign, build, test, and implement Internet Gateway migration solutions.\nConfigure and troubleshoot complex routing environments including BGP, OSPF, MPLS, VRFs, route redistribution, and traffic engineering.\nPerform deep-dive troubleshooting across Internet edge, SD-WAN, WAN, LAN, cloud, security, and carrier connectivity domains.\nDevelop and execute migration plans, implementation procedures, service cutovers, rollback strategies, and operational acceptance testing.\nPerform detailed dependency analysis across routing, security, DNS, DDI, remote access, cloud connectivity, and carrier services.\nAnalyse technical dependencies and resolve migration blockers across network and security services.\nCreate and review low-level designs, implementation plans, MOPs, and operational documentation.\nWork closely with Network Architects to translate target-state designs into deployable engineering solutions.\nSupport and Lead on major implementation events, service transitions, and high-risk change activities.\nDrive engineering best practice, technical quality, and operational readiness. ________________________________________ Required Skills & Experience\nCCIE (Cisco Certified Internetwork Expert) - Enterprise Infrastructure (mandatory)\nExpert-level BGP knowledge including Internet edge design, route policy, traffic engineering, route filtering, and multi-carrier connectivity.\nExtensive hands-on experience with Cisco enterprise routing and switching platforms.\nProven experience designing and implementing enterprise Internet connectivity solutions.\nStrong SD-WAN engineering experience (Cisco Viptela).\nStrong understanding of OSPF, MPLS, VRFs, QoS, route redistribution, and high-availability network design.\nExperience delivering complex network migrations and transformation programmes.\nExperience integrating enterprise networks with Azure and hybrid-cloud environments.\nAdvanced troubleshooting skills using packet captures, protocol analysis, routing diagnostics, and telemetry tools.\nExperience working directly with ISPs, carriers, and managed service providers.\nExperience producing implementation plans, migration runbooks, and low-level designs. ________________________________________ Desirable Skills\nCCDE or equivalent design experience.\nAzure ExpressRoute and hybrid-cloud networking.\nNetwork automation using tools such as Python, Ansible, NetBrain.\nExperience within Utilities, Energy, Critical National Infrastructure, or highly regulated environments.\nSkill Requirements\nRole Purpose Principal Network Engineer within the Global Network Engineering team, responsible for delivering a major Internet Gateway Migration programme across the US and UK regions, owning the low-level design and implementation activities. Working closely with other Network engineers, Network Architects, Security Architects, Operations teams, and suppliers, you will design, build, test, migrate, and troubleshoot complex enterprise network services across Internet, WAN, SD-WAN, cloud, and security domains. This is a hands-on network engineering role. Key Responsibilities\nDesign, build, test, and implement Internet Gateway migration solutions.\nConfigure and troubleshoot complex routing environments including BGP, OSPF, MPLS, VRFs, route redistribution, and traffic engineering.\nPerform deep-dive troubleshooting across Internet edge, SD-WAN, WAN, LAN, cloud, security, and carrier connectivity domains.\nDevelop and execute migration plans, implementation procedures, service cutovers, rollback strategies, and operational acceptance testing.\nPerform detailed dependency analysis across routing, security, DNS, DDI, remote access, cloud connectivity, and carrier services.\nAnalyse technical dependencies and resolve migration blockers across network and security services.\nCreate and review low-level designs, implementation plans, MOPs, and operational documentation.\nWork closely with Network Architects to translate target-state designs into deployable engineering solutions.\nSupport and Lead on major implementation events, service transitions, and high-risk change activities.\nDrive engineering best practice, technical quality, and operational readiness. ________________________________________ Required Skills & Experience\nCCIE (Cisco Certified Internetwork Expert) - Enterprise Infrastructure (mandatory)\nExpert-level BGP knowledge including Internet edge design, route policy, traffic engineering, route filtering, and multi-carrier connectivity.\nExtensive hands-on experience with Cisco enterprise routing and switching platforms.\nProven experience designing and implementing enterprise Internet connectivity solutions.\nStrong SD-WAN engineering experience (Cisco Viptela).\nStrong understanding of OSPF, MPLS, VRFs, QoS, route redistribution, and high-availability network design.\nExperience delivering complex network migrations and transformation programmes.\nExperience integrating enterprise networks with Azure and hybrid-cloud environments.\nAdvanced troubleshooting skills using packet captures, protocol analysis, routing diagnostics, and telemetry tools.\nExperience working directly with ISPs, carriers, and managed service providers.\nExperience producing implementation plans, migration runbooks, and low-level designs. ________________________________________ Desirable Skills\nCCDE or equivalent design experience.\nAzure ExpressRoute and hybrid-cloud networking.\nNetwork automation using tools such as Python, Ansible, NetBrain.\nExperience within Utilities, Energy, Critical National Infrastructure, or highly regulated environments.\nOther Requirements\nNA","description_format":"text","description_chars":9271,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Enterprise Networks","IT Consulting & Digital Transformation","IT Outsourcing & Dedicated Teams","Systems Integrators"],"lifecycle":[{"event":"open","at":"2026-09-25T13:03:49Z"}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":19,"reasons":["conf:2","win:early","comp:brand"],"computed_at":"2026-09-26T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/hcltech-principal-network-engineer","json_url":"https://alion.io/job/hcltech-principal-network-engineer.json","meta":{"generated_at":"2026-09-27T02:28:11Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":2201,"day_limit":5000,"remaining_today":2799,"minute_limit":60,"resets_at":"2026-09-28T00:00:00Z"}}}