Dias

Work experience

• React Native Developer04.2022 - present

  Key React Native developer

  Responsibilities:

  • Flutter developer
  • Code review and bug fixing
  • Performance optimization
  • Enhanced the functionality of a calling and chat application using TypeScript, incorporating the PJSIP library to efficiently manage calls and ensure seamless communication
  • Implemented the MVC pattern in application to organize and manage complex codebases efficiently
  • Utilized the Effector state manager to implement a robust, well-structured model, optimizing UI components for performance. Leveraged React hooks to streamline component logic and enhance user experience.
  • Engineered advanced gesture controls, including:
  • Recording and sending voice messages with an intuitive flow similar to Telegram and WhatsApp. Implementing pinch-to-a company functionality with custom wrapper components, enabling smooth zooming, double-tap interactions, and dynamic image viewing.
  • Developed native code within React Native application to extend capabilities and ensure high performance across platforms
  • Integrated and managed a wide range of third-party libraries and SDKs, such as RN-Firebase and Sentry, to enhance app functionality and reliability
  • Utilized react-native-keychain to securely store user login credentials, streamlining re-authentication and enhancing user convenience
  • Experience with CallKit and PushKit:
  • Configured the retrieval of the VoIP token in the native part of the application and the delivery of VoIP pushes to the app
  • Set up a native call screen to handle incoming and outgoing calls, ensuring the app behaves similarly to the standard iOS Phone app
  • Advanced level of using the Riverpod Flutter library:
  • Optimized provider and widget rebuilds using the library's mechanisms, enhancing the application's performance
  • Designed a robust architecture for app features communication by adding providers listeners, ensuring the app remains reactive and works seamlessly
  • Configured Firebase Cloud Messaging (FCM) for receiving and handling push notifications across multiple platforms, ensuring smooth integration with the app's notification system
  • Created the full network communications layout using Flutter-http library, including user authentication, JWT token storage, and a seamless single-token update using dart Completer mechanism to ensure all simultaneous network requests receive the same auth-token
  • Implemented application versioning using flavors, including:
  • Handling flavor-specific configurations during testing and deployment
  • Managing secrets and assets based on the active flavor
  • Storing and utilizing a company service settings and Firebase configurations for each version of the app
• React Native Developer08.2021 - 04.2022

  Key React Native developer

  Responsibilities:

  • Code review and bug fixing
  • Optimized app performance and ensured seamless user experience
  • Developed a feature-rich map interface using a company Maps API to display station and car wash locations
  • Built a secure network communication setup with Axios, including JWT authentication and single-token updates for concurrent requests
  • Enhanced performance with FlashList for large lists, optimized animations with React Native Reanimated and Gesture Handler, and improved UI responsiveness using React hooks
  • Created reusable components, implemented layouts from designs, integrated third-party APIs, and collaborated with QA and backend teams