Job Description
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Pivotel delivers critical communication solutions across satellite and cellular networks – keeping businesses, government organisations and communities connected in some of Australia's most challenging environments.
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Our Technology team designs, delivers and maintains the communications infrastructure behind those services across Australia, Recent Zealand and globally, spanning satellite, mobile and IP networks.
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We're continuing to evolve our voice and messaging platforms and are looking for an experienced Senior Voice Engineer / Architect to join our Technology team on an initial 6-month contract, with the possibility to extend.
About the Role
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This is a senior, hands-on technical role for someone with deep experience across carrier voice architecture, SIP and Ribbon Session Border Controllers (SBCs).
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You'll take technical ownership across the architecture, design, implementation and ongoing evolution of Pivotel's voice and messaging infrastructure, including carrier-grade SIP platforms, SBCs and 4G/5G IMS-based communication services.
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We're looking for someone who can come into the environment and contribute quickly – taking ownership of network designs, routing engines, platform migrations and complex technical escalations while helping shape the longer-term architecture and roadmap.
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This role combines architecture with genuine hands-on engineering. You won't simply be designing solutions from a distance – you'll be involved in configuring and optimising platforms, troubleshooting complex issues, leading migrations and improving the resilience and scalability of our voice environment.
Key Responsibilities
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Own and help shape the architecture and solution design for voice, messaging, VoIP, SIP interconnect and IMS-integrated environments
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Design, deploy, configure and optimise Ribbon SBC infrastructure across carrier networks
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Take hands-on technical ownership of Linux-based voice platforms and routing engines
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Lead voice architecture and integration across 4G/5G, IMS and VoLTE environments
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Design and support SIP interworking, Diameter signalling and carrier interconnects
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Plan and deliver migrations from legacy voice platforms to modern, scalable architectures
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Act as a senior escalation point for complex voice and messaging incidents
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Perform advanced protocol analysis, packet capture and root-cause analysis
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Design and optimise routing engines, dial plans and supporting automation
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Work with technologies including Redis, SQL, DNS and REST APIs
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Ensure voice architecture aligns with telecommunications regulatory and security requirements
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Work closely with carriers, interconnect partners, vendors and internal technical teams
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Develop clear architectural documentation, standards and technical designs
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Provide technical guidance and mentorship across the broader Technology team
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What You'll Bring to This Role
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This is a specialist senior position, so we're looking for someone with significant hands-on carrier voice experience who can operate with a high degree of technical independence.
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Ideally, you'll bring:
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Extensive hands-on experience designing, configuring, deploying and troubleshooting Ribbon Session Border Controllers
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Strong experience in carrier-grade voice and SIP environments
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Deep knowledge of SIP, RTP/RTCP, SIP trunking, softswitches and PSTN carrier interconnects
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Hands-on experience with IMS, VoLTE, Diameter signalling and 4G/5G mobile core integration
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Strong Linux administration and performance-tuning capability




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Experience with SMSCs, SMPP and messaging routing environments
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Experience with Redis, SQL, DNS, REST APIs and voice/network automation
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Strong protocol analysis and complex troubleshooting capability
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Experience planning and delivering complex platform migrations
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Strong technical documentation and architectural design capability
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Knowledge of Australian telecommunications requirements, including number routing, MNP and lawful interception
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The ability to work independently while engaging effectively with technical teams, carriers, vendors and other stakeholders
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Why Join Pivotel?
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6-month contract with the possibility to extend
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Take technical ownership of a complex carrier-grade voice and messaging environment
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Work across Ribbon SBC, SIP, IMS, VoLTE, mobile and satellite communications
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Help shape the architectural roadmap and modernisation of critical voice platforms
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Lead meaningful platform migrations, optimisation and automation initiatives
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Work with experienced technical specialists, carriers and technology partners
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Enjoy additional paid annual leave during your employment – 3 bonus days available from commencement
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Hybrid working arrangements – 3 days in our Gordon office and 2 days working from home
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Access to Employment Hero benefits, including discounts and cashback on everyday expenses such as fuel, groceries, retail and travel
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Employee Assistance Program (EAP) offering 24/7 confidential support for you and your family
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Gordon NSW location with onsite parking
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Pivotel is an equal opportunity employer and encourages applications from Aboriginal and Torres Strait Islander people, people from diverse backgrounds, and those with disabilities.
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All successful candidates will be required to complete an Australian Police Check prior to commencement.
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📌 Senior Voice Engineer (New South Wales)
🏢 Rgit Australia
📍 New South Wales