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- Architected and developed the application’s UI, ensuring a responsive, high-performance user experience across web and mobile.- Integrated both internal and external API services for streamlined data flow, including real-time synchronization and data processing optimization.- Built an in-house user behavior analytics system to replace Google Analytics, complete with cross-team documentation for smooth adoption.- Optimized server requests and minimized data consumption to accommodate connectivity limitations and reduce bandwidth usage.- Implemented performance optimizations and advanced data processing, optimized visualizations and reactive data handling.- Successfully integrated the application with external portals and third-party applications, aligning with ADA standards for accessibility.- Utilized browser APIs to extend functionality and enhance interactivity for a tailored user experience.Tech Stack: TypeScript, JavaScript, Vue 2/3, Pinia, Vuex, Vite, Webpack, Axios, React Native/Redux, WebGL, Browser APIs

Development a web application using React.js and Redux in a multi-person team.Key Responsibilities:- Mentored and supported junior developers, conducted code reviews.- Optimized performance, implemented lazy loading of components and data, and integrated with REST APIs.Results: Successful project management, improved code quality, and application performance.

Development a web application for a fulfillment system interacting with marketplaces using React, TypeScript, Redux, and Redux Toolkit.Key Responsibilities:- Initial project management and team leadership.- Collaborated with design and backend teams- Integrated APIs and optimized application performance, including handling large lists and complex filtering and searching.Results: Enhanced performance and usability, successful integration with external services.

Development a mobile application for a driver monitoring system, including personal accounts, contract management, and various statements.Technologies: React Native, Redux, Redux Toolkit, TypeScript.Role and Responsibilities:- Designed architecture, and led the development process.- Collaborated with design and testing teams to ensure application quality and stability.- Integrated APIs for data retrieval and interaction with the backend system.- Integrated mapping APIs, fuel card systems, and implemented navigation and file handling.- Optimized performance and implemented modern approaches, including build automation and app deployment to stores (App Store and Google Play).

Development a high-load cross-platform application for remote control of car security systems and smart home using React Native + Redux.- Mentoring and coordinating the development process.- Built the application, collaborating closely with backend, design, and testing teams.Integration: - Integrated REST API and migrated to WebSocket for real-time data updates. - Integrated Google Maps, Apple Maps, and OpenStreetMap for navigation with historical filtering. - Worked with geolocation services for real-time user location. - Implemented payment systems with Google Pay and Apple Pay, and used Firebase for push notifications. - Reduced final bundle size by 40% for faster loading. - Configured complex animations using React Native Reanimated and Gesture Handler. - Implemented lazy loading to optimize performance. - Developed reusable components to simplify code maintenance. - Used Babel, Metro, and Fastlane for build and deployment automation. - Implemented an authorization system using device biometrics (Face ID, Fingerprint). - Developed a chat system for support interaction, including sending media files. - Set up a logging system for issue resolution. - Automated the build and publishing process on TestFlight and coordinated with Play Market and App Store support. - Ensured compliance with accessibility requirements and platform guidelines