Senior Telco Operations Engineer (VoIP/SMS)
Core
Senior Telco Operations Engineer managing Viber's voice and messaging infrastructure at scale, including wholesale voice/SMS operations, user activation, and anti-fraud systems.
Role type
Senior IC Telco Operations Engineer (VoIP/SMS)
Builds
High-availability VoIP and SMS platforms for hundreds of millions of users (via careerplan.io/jobs/04-002-81-F62-43-20F-senior-telco-operations-engineer-voipsms-at-viber)
Domain
Telecommunications / VoIP / SMS / Cloud Infrastructure
Required skills
VoIP/SMS operations, SIP protocol, SMPP/HTTP messaging, voice routing (Class 4/5 switches), network debugging (Wireshark, tcpdump), TCP/IP fundamentals, carrier interconnections, billing/rating systems, ticket-driven support, English communication
Preferred skills
Open-source VoIP platforms (OpenSIPs, FreeSWITCH, MVTS, Oracle SBC), scripting (Python, Bash, Lua), AWS, Linux system administration, WebRTC, ticketing systems (Zendesk, JIRA), fraud detection/traffic analysis, mentoring, REST APIs
