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Weavr Financial SDK

Weavr.io

Developed a comprehensive SDK that allows third-party applications to integrate banking, payments, and financial management features. The SDK supports both Android and React Native platforms with a unified API, enabling fintech startups to launch compliant financial products in days instead of months.

Role

Senior Mobile Engineer

Duration

2024 - Present

Team

Cross-functional team of 8 engineers

Platforms

Android, React Native

Documentation
Weavr Financial SDK

Tech Stack

KotlinReact NativeTypeScriptREST APIs

Key Challenges

  • Creating a unified API that works seamlessly across Android and React Native platforms
  • Ensuring PCI-DSS compliance while maintaining developer-friendly integration
  • Building robust error handling for financial transactions with proper rollback mechanisms

What I Built

  • Designed a platform-agnostic abstraction layer with native bridges for performance-critical operations
  • Implemented tokenization and secure storage patterns that meet regulatory requirements
  • Created comprehensive error taxonomy with automatic retry logic and transaction state management

Results & Impact

Reduced client integration time from 2-3 weeks to 2-3 days

SDK adopted by multiple fintech startups for their product launches

Zero critical security issues reported since launch