Mobile SDK Developer for Banking

We are seeking an experienced mobile SDK developer to build a cross-platform Device Intelligence & Behavioural Analytics SDK for Android and iOS banking applications. The SDK will collect privacy-conscious device, application, and behavioural signals to support fraud detection and risk analysis through our backend platform. Responsibilities include developing native Android and iOS SDKs, capturing permitted signals and lifecycle events, implementing secure event collection, batching, offline buffering, and backend communication, and building a React Native wrapper with TypeScript APIs. You should also evaluate Kotlin Multiplatform for shared logic, optimise performance and security, and deliver documentation, sample apps, tests, and source code. Please share relevant SDK experience, proposed architecture, timeline, and cost.