{"id":1232821,"url":"https://alion.io/job/singtel-technical-specialist-fixed-voice","title":"Technical Specialist, Fixed Voice","company":{"id":49912,"name":"Singtel","domain":"singtel.com","url":"https://alion.io/company/singtel","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"SuccessFactors","truth_index":null},"role":"Sales","role_family":"Sales","seniority":null,"employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Macquarie Park, Australia"],"countries":["AU"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":60000,"max_usd":141000,"period":"year","method":"role_country_seniority_unknown","sample_n":62},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AIOps","optional":false},{"name":"Grafana","optional":false},{"name":"Incident Management","optional":false},{"name":"ITIL","optional":false},{"name":"ITSM","optional":false},{"name":"Linux","optional":false},{"name":"NER","optional":false},{"name":"ServiceNow","optional":false},{"name":"Speech Recognition","optional":false},{"name":"Unix","optional":false},{"name":"Wireshark","optional":false}],"status":"live","first_seen_at":"2026-09-24T00:00:00Z","employer_posted_date":"2026-09-24","last_verified_at":"2026-09-26T05:56:13Z","board_verified":true,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"Optus is an Australian telecommunications company, delivering more than 11 million services to our customers every day across mobile, broadband and digital solutions.\nAs the Technical Specialist, Fixed Voice, you’ll be accountable for the operation, maintenance, technical support and continual improvement of Optus’ Fixed Voice network infrastructure. You’ll work across Ribbon voice switching and SBC platforms to maintain network availability, performance, resilience and operational compliance, while helping modernise our Network Operations tooling through improved observability, trusted data, OSS integration and automation.\nWhat You’ll Do\nOperate and maintain Ribbon Fixed Voice nodes, including DMS300, CS2000 (CS2K), C20, SBC, PSX, IN and associated sub-elements.\nProvide Level 2 fault management, incident resolution and technical support for Fixed Voice platform outages, service degradations and complex operational issues in line with ITIL best practices.\nManage escalated and complex customer-related faults across Enterprise and Wholesale environments.\nPerform structured fault diagnosis and root-cause analysis, identifying corrective actions and validating the effectiveness of permanent remediation.\nConfigure and manage C20 elements, including GWC, SP2K, G9, MAS, SST, SSL/SESM/A2, CBM, CMT, IEMS, MG15K and NDM.\nManage SIP trunking, routing and policy rules through Ribbon NMS, including SIP/TDM interworking and service validation.\nInvestigate voice network faults using SIP, INAP, Diameter, RTP and C7/ISUP protocols, together with OSIX and Wireshark.\nExecute software upgrades, patch management and planned maintenance on Ribbon platforms, including implementation, testing, rollback and post-change verification.\nMonitor Fixed Voice network KPIs using Grafana and Kalix, proactively addressing degradation trends affecting call completion, ASR, NER and MOS.\nDevelop, review and maintain Methods of Procedure, implementation plans, risk assessments, technical change records, network documentation and knowledge articles.\nCollaborate with Network Operations, Engineering, Service Management, NOC, Network Enablement & AI Ops, vendors and suppliers to restore services, improve reliability and support the transformation and rationalisation of Network Operations tooling.\n What You Bring\n15+ years of wireline or Fixed Voice telecommunications experience, with hands-on operational experience across Ribbon or GENBAND platforms.\nDeep technical expertise in CS2000 (CS2K), C20 and SBC platforms, including call control, provisioning, trunk management, signalling configuration and fault resolution.\nStrong operational knowledge of Ribbon Fixed Voice architectures and SBC platforms, including SIP trunking, media policy and SIP/TDM interworking.\nAdvanced knowledge of SIP, SS7/ISUP, SIGTRAN, TDM E1/PRI, RTP/RTCP, G.711/G.729, DTMF, LNP/ENUM and IPv4/IPv6.\nPractical experience with Grafana, Kalix/OSIX, Wireshark, Ribbon EMS/RAMP, ServiceNow or equivalent ITSM platforms, and Unix/Linux command-line tools.\nAbility to interpret Fixed Voice KPIs, including call completion rate, ASR, NER and MOS, and act on emerging degradation trends.\nProven experience in incident management, root-cause analysis, planned maintenance, software upgrades, patching, MOP development, change governance and vendor TAC engagement.\nA Bachelor’s degree in Telecommunications, Electronics, Computer Science or equivalent experience. Ribbon certifications, CCNA/CCNP Voice and ITIL v4 Foundation are preferred.\nKnowledge of observability, operational analytics, automation and safe AI-assisted operations is desirable.\nStrong technical ownership, accountability and a disciplined approach to operational risk, with the ability to communicate complex issues clearly to technical and non-technical stakeholders in high-pressure incident, outage and escalation environments.\nThe good stuff…\nCompetitive remuneration and employee discounts. Make life easier (and more affordable) with $80 monthly credit and 25% off Optus products and unique shopping discounts with our retail partners.\nFlexible working arrangements with opportunities to work three days in the office, two days remote or home.\nVibrant and collaborative office campus that includes cafes, convenience store, chill out zones, GP, post office, gym and on-site childcare centre.\nCompetitive leave policies, including additional 'Connected’ days to focus on culture, family, health, community, or whatever’s important to you.\nWe support growing families with inclusive, carer-neutral paid Parental Leave of up to 16 weeks.\nBuild meaningful connections through employee-led networks and diversity initiatives including Culture Connect, Elevate Women, Disability Network and Express Yourself (LGBTQIA+).\nPut your wellbeing first with free access to counselling and support services, 24/7 - in-person, by phone, SMS, or video.\nFree Optus bus from Macquarie University Metro Station (every 6-8 minutes); morning and afternoon.\nAt Optus, we are strengthened by others and that means valuing diversity and saying ‘yes’ to embracing individual differences.\nWe are committed to ensuring that our application process provides an equal employment opportunity to all job seekers, including individuals from diverse gender, cultural and linguistic backgrounds, individuals with a disability, individuals identifying as being part of the LGBTQIA+ community, individuals who may have served in the armed forces or who identify as Aboriginal and/or Torres Strait Islander.\nWe also want to do our best to make our recruitment process inclusive.\nIf you require any adjustments or accessibility support to participate fairly and equitably in the recruitment process, please email  or call 1800 309 170.\nhttps://www.optus.com.au/about/inclusion-diversity For more information on Diversity, Inclusion & Belonging at Optus, please visit https://www.optus.com.au/about/inclusion-diversity","description_format":"text","description_chars":5958,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":true},"security_clearance":false,"languages":[]},"benefits":["Flexible schedule","Parental leave"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Telecommunications","Broadband"],"lifecycle":[{"event":"open","at":"2026-09-25T15:25:06Z"}],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":3,"expected_fill_days":21,"reasons":["conf:23","velocity","win:early","comp:brand"],"computed_at":"2026-09-27T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/singtel-technical-specialist-fixed-voice","json_url":"https://alion.io/job/singtel-technical-specialist-fixed-voice.json","meta":{"generated_at":"2026-09-28T02:52:25Z","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":1717,"day_limit":5000,"remaining_today":3283,"minute_limit":60,"resets_at":"2026-09-29T00:00:00Z"}}}