Senior Voice Architect: SIP, SBCs & IMS (Hybrid)

Pivotel Satellite; Sydney; Hybrid; AUD 120,000 - 180,000; Full time

Benefits offered by this job

Hybrid work model

3 bonus days of annual leave

EAP (Employee Assistance Program)

Job summary

Pivotel Satellite is seeking a senior hands‑on Voice Engineer/Architect to own the architecture, design and ongoing evolution of our voice and messaging infrastructure across carrier networks and IMS environments. You will configure and optimise SBCs, Linux platforms and routing engines while leading migrations and complex escalations.

The role sits in Pivotel’s Technology team on a 6‑month contract with potential extension, offering hybrid work from Gordon NSW and on‑site collaboration with

Qualifications

• 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.
• Proven experience designing resilient, highly available telecommunications architectures.
• 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.

Responsibilities

• Own and shape architecture and design for voice, messaging, SIP interconnect and IMS environments.
• Design, deploy, configure and optimize Ribbon SBC infrastructure across carrier networks.
• Take hands-on ownership of Linux-based voice platforms and routing engines.
• Lead voice architecture and integration across 4G/5G, IMS and VoLTE.
• Design and support SIP interworking, Diameter signalling and 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 and root-cause analysis.
• Design and optimise routing engines, dial plans and automation.
• Work with Redis, SQL, DNS and REST APIs to enable automation.

Skills

Ribbon SBCs

Carrier voice

SIP/IMS

Linux administration

Protocol analysis

VoLTE & 4G/5G

Networking routing

SQL/Redis/DNS/REST APIs

Troubleshooting

Documentation

Tools

Linux

Redis

SQL

DNS

REST APIs

Job description

Pivotel Satellite is seeking a senior hands‑on Voice Engineer/Architect to own the architecture, design and ongoing evolution of our voice and messaging infrastructure across carrier networks and IMS environments. You will configure and optimise SBCs, Linux platforms and routing engines while leading migrations and complex escalations.

The role sits in Pivotel’s Technology team on a 6‑month contract with potential extension, offering hybrid work from Gordon NSW and on‑site collaboration with