Principal Voice & SBC Architect

Medellín, Colombia | Remote | Independent Contractor

Teams Plus is looking for a hands-on Principal Voice & SBC Architect to help design, deploy, and operate the next generation of our communications platform.

This is a senior individual-contributor role for someone who has personally built and operated production voice infrastructure—not simply designed it from a distance.

You will own voice and SBC architecture supporting carrier connectivity, SIP routing, browser calling, programmable communications, and highly available communications services. You will work closely with our Network & Infrastructure Architect, developers, data/AI specialists, leadership, carriers, and technology partners.

What You Will Own

Voice and SBC architecture
Design and operate Kamailio-based services, SIP routing, customer authentication, media handling, carrier interconnections, SBC interoperability, and multi-site failover.

Carrier and platform integration
Own the technical path between customers, our voice platform, SBCs, carriers,



and downstream communications services. Ribbon and Microsoft Teams Direct Routing experience are especially valuable.

WebRTC and media
Design and troubleshoot WebRTC-to-SIP calling, including ICE/STUN/TURN, SDP, RTP/SRTP, DTLS-SRTP, NAT traversal, codecs, media handling, and browser-based calling.

Identity and service protection
Design and validate caller identity, number authorization, STIR/SHAKEN signing and verification, tenant separation, fraud controls, rate limits, and related service-protection policies.

Reliability and operations
Own monitoring, incident diagnosis, carrier/vendor escalation, capacity planning, recovery testing, patching, and technical escalation for the voice platform after deployment.

Automation and engineering quality
Turn recurring investigations and operational changes into documented runbooks, tests, and controlled automation. We actively use AI-assisted engineering tools, but our tech

📌 Principal Voice (Medellín)
🏢 Teams Plus
📍 Medellín