Senior Flutter Developer
Build the white-label mobile apps our clients launch under their own brands: banking, crypto cards, SoftPOS and trading, from one Flutter codebase of shared modules.
About the role
Most of what our clients' customers touch is a Flutter app: a neobank, a crypto card wallet, a phone that takes card payments, a trading app. They are all assembled from the same library of mobile modules, so a feature you build once ships in several products, under several brands.
You will own modules end to end: architecture, UI, state, the integration with our APIs and with the device (NFC, biometrics, secure storage, push), tests, and the release through the App Store and Google Play. You will work closely with our backend engineers and our designer, and with clients' teams when a launch needs it.
We care about apps that feel fast and never lose a payment. Offline states, retries, error handling and security are part of the job, not an afterthought.
What you will do
- Build and maintain the Flutter modules behind our banking, crypto card, SoftPOS and trading apps
- Turn designs into polished, accessible screens that work on every supported phone
- Integrate with our APIs, card and payment providers, and device features such as NFC, biometrics and secure storage
- Keep white-labelling simple: theming, configuration and feature flags per client
- Write unit, widget and integration tests, and keep the release pipeline healthy
- Review code and help shape the architecture of the mobile platform
What we look for
- 4+ years of mobile development, at least 2 of them with Flutter and Dart in production apps
- Apps you have shipped to the App Store and Google Play
- Solid state management (Bloc, Riverpod or similar) and a clean, modular architecture
- Experience with REST APIs, authentication flows and the secure handling of sensitive data
- Good written English, and the habit of explaining your decisions
Nice to have
- Native iOS (Swift) or Android (Kotlin), including platform channels
- NFC, Tap to Pay, or card and wallet SDKs (Apple Pay, Google Pay)
- Fintech, banking or crypto apps, and the compliance that comes with them
- CI/CD for mobile: Fastlane, Codemagic or GitHub Actions