{"id":3786464,"url":"https://alion.io/job/telstra-group-senior-network-engineer-voice-ipx","title":"Senior Network Engineer (Voice & IPX)","company":{"id":188,"name":"Telstra Group","domain":"telstra.com.au","url":"https://alion.io/company/telstra","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"A","score":100,"open_postings":14,"ghost_share":0,"stale_share":0.143,"repost_share":0.071,"time_to_fill_p50_days":20,"computed_at":"2026-11-09T06:03:00Z"}},"role":"Networking","role_family":"Networking","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Chennai, India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"BGP","optional":false},{"name":"DNS","optional":false},{"name":"Grafana","optional":false},{"name":"Incident Management","optional":false},{"name":"MPLS","optional":false},{"name":"OSPF","optional":false},{"name":"Splunk","optional":false},{"name":"VLAN","optional":false}],"status":"live","first_seen_at":"2026-11-05T03:52:26Z","employer_posted_date":"2026-11-05","last_verified_at":"2026-11-10T02:00:26Z","board_verified":true,"closed_at":null,"days_open":5,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":5},"description":"Employment Type\nPermanentClosing Date\n12 Nov 2026 11:59pmJob Title\nSenior Network Engineer (Voice & IPX)Job Summary\nJob Description\nAs a Senior Network Engineer (Voice & IPX), you’ll help shape the future of Telstra’s international mobility, voice, and interconnect capabilities.\nThis individual contributor role is responsible for ensuring Telstra’s international network delivers a reliable, high-quality experience for interconnect and roaming partners, suppliers, and customers. You’ll contribute to the analysis, architecture, design, development, deployment, and optimisation of network technologies, with a strong focus on interoperability across multiple network domains.\nYou’ll drive technology evolution across Telstra’s International Core Voice, IPX, and Mobility/Roaming platforms, delivering scalable and resilient solutions supporting international voice, mobility and roaming services, signalling platforms, and specialised international network services.\nYour focus will span the infrastructure, virtualisation, orchestration, application, IP network, and security layers, including:\nOracle DSR, Ribbon SBC and PSX, and A2P SMS applications\nCisco and Juniper switching and routing\nCheck Point firewalls and network security\nNFV, cloud-native architectures, orchestration, and automation\nYou’ll provide technical leadership in delivering innovative, next-generation network solutions that improve service quality, operational efficiency, resilience, and Telstra’s position in the global mobility and interconnect landscape.\nWhat We Offer\nPerformance-related pay\nAccess to thousands of learning programs so you can level-up\nGlobal presence across 22 countries; opportunities to work where we do business.\nPurchased annual leave scheme\nAdditional Telstra day off\nAdditional 30% off Telstra products and services\nToolkit provided (laptop + mobile phone + plan paid for)\nWhat You’ll do\nDesign, develop, deploy, and optimise solutions across International Voice, IPX, Mobility, and Roaming networks.\nDrive network transformation through NFV, cloud adoption, automation, and software-defined networking.\nDeliver secure, scalable, high-performing interconnect and roaming solutions.\nProvide specialist expertise across signalling, voice, IPX, roaming, and interconnect, ensuring integration with adjacent network technologies.\nSupport Cisco and Juniper switching and routing infrastructure across the International Voice and IPX networks.\nManage Check Point firewalls and network security controls, ensuring compliance with Telstra security policies and standards.\nManage deployment, configuration, and lifecycle of Oracle DSR, Ribbon SBC and PSX, and A2P SMS platforms.\nManage and support the infrastructure, virtualisation, and orchestration layers hosting International platforms and applications.\nCollaborate with internal stakeholders, international partners, customers, and vendors to deliver strategic network capabilities.\nLead troubleshooting and resolution of complex network issues to maintain service availability and customer experience.\nManage hardware and software currency, security patching, resiliency assessments, and sustainability requirements.\nProduce and review High Level Designs, test plans, and Methods of Procedure, and execute changes under Telstra change governance.\nContribute to network strategy, technology roadmaps, architecture standards, and continuous improvement.\nYour Technical Expertise\nYou’ll bring strong knowledge and experience across:\nVoice & IPX: Softswitches, Ribbon SBC, Ribbon PSX, Media Gateways, Oracle DSR, Oracle/Tekelec EAGLE STP, DNS/ENUM, A2P SMS\nProtocols: VoIP, SIP, TDM, IPX, Diameter, SS7/SIGTRAN, LTE, 3G/4G/5G, VoLTE/IMS\nIP & Security: Cisco and Juniper switching/routing, IP/MPLS, VLAN/VRF, BGP/OSPF, Check Point firewalls, network segmentation, signalling and interconnect security\nVirtualisation & Orchestration: Red Hat Virtualisation, NFV/VNF/CNF, cloud-native platforms, orchestration and automation tooling\nNetwork Domains: International Core Voice & IPX, Voice & IPX Signalling, Mobility & Roaming, Wholesale Voice, OTT Voice\nMonitoring & Assurance: Traffic Management Systems, Real-Time Traffic Monitoring, Genview Analytics, Performance Intelligence Centre, Splunk, Grafana, Inventory Management\nLifecycle Management: Hardware and Software Currency, Security Patching, Resiliency and Sustainability Concepts and Management\nAbout You\nBachelor’s degree in Telecommunications Engineering or a related discipline, or equivalent relevant technical qualifications.\nMinimum 8 years’ relevant experience in voice, signalling, IPX, and/or mobility/roaming network engineering.\nStrong understanding of international Voice, IPX, Mobility/Roaming, and carrier interconnect requirements.\nHands-on experience with Oracle DSR, Ribbon SBC and PSX, and A2P SMS platforms, including deployment and management.\nExperience configuring and supporting Cisco and Juniper switches and routers in carrier-grade environments.\nExperience managing Check Point firewalls and network security controls.\nSound knowledge of virtualisation, NFV, cloud-native architectures, and orchestration platforms.\nSound understanding of SIP, Diameter, SS7/SIGTRAN, and IP networking protocols.\nExperience as a technical lead on medium to large engineering projects, preferably across voice or mobility networks.\nAbility to review technical solutions, conduct impact analysis, and plan controlled implementations.\nStrong analytical, problem-solving, and root-cause analysis skills.\nExcellent interpersonal, vendor, and stakeholder management skills.\nCertifications such as CCNP, JNCIP, Check Point CCSA/CCSE, or Red Hat will be highly regarded.\nWho You’ll Work With\nInternally, you’ll work closely with:\nIP, Transmission, Security, and Network Optimisation teams\nVoice Network Operations groups (TGOC) and Major Incident Management\nProduct, Architecture, and Cloud/Virtualisation Infrastructure teams\nNetwork Resilience, Change Management, and Cyber Security teams\nFinance teams\nExternally, you’ll coordinate and deliver programs under the International Voice and IPX Engineering program of works, partnering with international interconnect and roaming partners, IPX carriers, customers, and technology vendors including Oracle, Ribbon, Cisco, Juniper, and Check Point.\nWhy Join This Team?\nYou’ll work at the heart of Telstra’s international network, combining carrier-grade telecommunications expertise with NFV, cloud-native networking, automation, orchestration, and next-generation network technologies.\nIt’s an opportunity to influence the evolution of Telstra’s international Voice, IPX, signalling, mobility, roaming, IP, security, and virtualisation environments while working with global partners and leading technology vendors.\nDiversity is more than a policy - it’s how we thrive\nWe know diverse teams deliver better outcomes, and we’re committed to creating an environment where everyone feels safe, respected, and supported - regardless of gender, background, or ability.\nWe strongly encourage women and gender-diverse people to apply and are happy to discuss flexible working arrangements or adjustments to the recruitment 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