Rakuten Viber is one of the most popular and downloaded apps in the world. Working with us provides a unique opportunity to influence hundreds of millions of our users and to be part of the journey that makes us a super-app. Our mission is to make people’s lives easier by enabling meaningful connections, from precious moments with family and friends, through managing business relationships to pursuing their passions.
We are seeking an experienced Senior VoIP/SMS Engineer to join our Telco Operations team. The team manages Viber's voice and messaging infrastructure at scale, including wholesale voice and SMS operations, user activation services, and anti-fraud systems. This role combines hands-on engineering with operational leadership, working across carrier partners, internal platforms, and cross-functional teams to ensure service quality and business continuity.
What you'll do
Take a tech-lead role within the team: coordinate engineering tasks, guide junior members, own escalation decisions, and represent the team in partner-facing communication
Operate and maintain large-scale VoIP and SMS platforms in a cloud environment, ensuring high availability and optimal performance
Provide Level II and Level III technical support for voice and messaging services, handling complex escalations from partners and internal teams
Onboard new carrier partners: configure trunks, accounts, and routing for voice and SMS wholesale operations