- Developed new features for several react native applications in e-commerce area (b2c & b2b);- Was responsible for maintenance, release & bug fixing of react native apps;- Built Android application in kotlin for a payment terminal;- Configured & wrote set of E2E tests for react native & android;- Implemented socket.io based redux middleware for real-time communication between clients/servers;- Contributed to the integration of Apache Kafka as a layer between FE & BE;- Developed React app used for internal debugging to support new architecture transition;

· Developed and evaluated set of new features for an existing React Native application;· Increased E2E tests coverage;· Refactored multiple React components improving the overall performance;

· Co-Developed React Native application from scratch with the goal to simplify urban mobility issues;· Built and maintained separate npm library with the set of react-native UI components using storybook;· Added type system to the codebase (Flow);· Configured CI/CD pipeline for app distribution using Microsoft appcenter service;· Developed custom real-time tracking/routing screen by using mapbox;· Integrated various third-party libraries (graphql client, navigation, state-management, UI elements)Tech Stack: JavaScript (ES5, ES6+);Flow (type checker);React Native; Redux (state management);Apollo client (interaction with graphql server);Styled-components (styling);Storybook;In addition, the following tools are used:Android Studio / Xcode / VS Code (IDEs);Github (version control);NPM (publishing of UI components);Microsoft App Center (for distribution / CD);