25 million eSIMs: How Holafly builds with Flutter

Holafly is the global leader in eSIMs for travelers, offering coverage in over 200 destinations. With an outstanding 4.7/5 rating on Trustpilot and more than 25 million of eSIM sold, it has become the preferred eSIM choice for international travelers. Its unlimited data and build-in back up plan offering ensures peace of mind anywhere in the world.

Their engineering team breaks down how they transitioned to Flutter to build a modular monorepo, integrated type-safe native platform bindings for eSIM activations, and streamlined internationalization across 20+ languages using the Crowdin Flutter SDK and Gemini. Discover how Holafly manages a multi-disciplinary enterprise structure built for massive scale.

Chapters:
0:00 - Intro
0:31 - Why Holafly chose Flutter
1:47 - Global team
2:25 - Localization
2:32 - CI/CD pipelines

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Products Mentioned: Flutter