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.
Our Technology team designs, delivers and maintains the communications infrastructure behind those services across Australia, New Zealand and globally, spanning satellite, mobile and IP networks.
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
This is a senior, hands-on technical role for someone with deep experience across carrier voice architecture, SIP and Ribbon Session Border Controllers (SBCs).
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.
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.
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 workplace.
Key Responsibilities
Own and help shape the architecture and solution design for voice, messaging, VoIP, SIP interconnect and IMS-integrated environments
Design, deploy, configure and optimise Ribbon SBC infrastructure across carrier networks
Take hands-on technical ownership of Linux-based voice platforms and routing engines




Lead voice architecture and integration across 4G/5G, IMS and VoLTE environments
Design and support SIP interworking, Diameter signalling and carrier interconnects
Plan and deliver migrations from legacy voice platforms to modern, scalable architectures
Act as a senior escalation point for complex voice and messaging incidents
Perform advanced protocol analysis, packet capture and root-cause analysis
Design and optimise routing engines, dial plans and supporting automation
Work with technologies including Redis, SQL, DNS and REST APIs
Ensure voice architecture aligns with telecommunications regulatory and security requirements
Work closely with carriers, interconnect partners, vendors and internal technical teams
Develop clear architectural documentation, standards and technical designs
Provide technical guidance and mentorship across the broader Technology team
What You'll Bring to This Role
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.
Ideally, you'll bring:
Extensive hands-on experience designing, configuring, deploying and troubleshooting Ribbon Session Border Controllers
Strong experience in carrier-grade voice and SIP environments
Deep knowledge of SIP, RTP/RTCP, SIP trunking, softswitches and PSTN carrier interconnects
Hands-on experience with IMS, VoLTE, Diameter signalling and 4G/5G mobile core integration




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