Senior Telco Operations Engineer (VoIP/SMS)
Core
Manage Viber's voice and messaging infrastructure at scale, including wholesale voice/SMS operations, user activation, and anti-fraud systems.
Role type
Senior Telco Operations Engineer (VoIP/SMS)
Builds
High-availability VoIP and SMS platforms for hundreds of millions of users
Domain
Telecommunications / VoIP / SMS
Required skills
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/commercial 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
Responsibilities
Coordinate engineering tasks and guide junior members, operate/maintain large-scale VoIP/SMS platforms, provide Level II/III technical support, onboard new carrier partners, investigate and resolve network communication issues, drive internal infrastructure projects, monitor and evaluate network systems, collaborate with cross-functional teams, contribute to process automation, participate in anti-fraud efforts
Seniority
Senior, hands-on IC with operational leadership (via careerplan.io/jobs/04-002-81-F62-senior-telco-operations-engineer-voipsms-at-viber)
