Take ownership of core voice architecture and infrastructure delivery for an established Australian cloud communications platform provider.
The Role Working alongside executive leadership, you will own the technical operation, reliability, and stability of a multi-tenant voice and communications platform. Your core mission is to transition the platform into a predictable, highly reliable state by systematically addressing technical debt, resolving root causes of recurring issues, and implementing disciplined deployment and monitoring practices. Beyond incident resolution, you will guide architecture decisions, set engineering standards, and functional direction for a dedicated onshore and offshore development team.
The Tech Stack & Environment
Core Voice: Asterisk, PJSIP, database-backed dialplans, CDR/CEL, SIP trunking, call routing
Routing & Media: Kamailio (SIP routing, registrar, SBC functions), RTPEngine, WebRTC
Diagnostics: Packet level SIP, SDP, RTP/RTCP analysis, NAT traversal, codec issues
Infrastructure & Security: Debian Linux, Azure Virtual Machines & Networking, MySQL (replication/backups), TLS/SRTP, SIP fraud prevention
Automation & Scripting: Python, JavaScript / TypeScript, APIs
What You'll Bring
Proven background operating and maintaining production Asterisk and SIP voice platforms at scale
Deep packet level diagnostic capability using tools like Wireshark or Homer to solve complex RTP and media path issues
Hands-on system administration experience across Linux (Debian preferred), Azure VMs, and MySQL databases
Ability to provide technical direction to developers, setting clear engineering and release management standards
Existing experience with Kamailio and RTPEngine is highly desirable; otherwise, a strong appetite to master these technologies during structured knowledge transfer
Apply Now To express interest in this position, submit your application directly or reach out to israel.stevenson@ranstaddigital.com.au for a confidential discussion.
At Randstad, we are passionate about providing equal employment opportunities and embracing diversity to the benefit of all. We actively encourage applications from any background.