Senior Flutter Software Engineer
IDT CorporationBelarus, Georgia + 3 more
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BOSS Revolution helps millions of people across the world stay connected with family and friends — through international calling, mobile top-up, and money services. As a Senior Flutter Developer on our DTC Calling team, you'll build and evolve the flagship BOSS Revolution app: a large-scale Flutter product with a deep native calling stack (SIP/VoIP on Android and iOS) at its core.
You'll work in one of the largest Flutter codebases in production — a monorepo of 100+ internal packages, feature-first clean architecture, and a strong engineering culture around code quality, testing, and automation.
What You'll Do:
Hybrid development : Design and build high-performance features in Flutter/Dart, while maintaining and extending the native calling stack — SIP clients, audio handling, CallKit/ConnectionService integration — in Kotlin and Swift, connected via platform channels.