Vitalii Y.

Full-Stack Developer | More than 4 Years of Experience🤚 I am a full-stack developer with four years of professional experience in designing and implementing scalable, maintainable web and mobile applications. My core expertise includes backend development with Node.js and Nest.js, as well as cross-platform mobile app development using React Native. On the front end, I focus on building clean, performant interfaces with, React.js and Next.js. 🖥 Core Competencies ⚙️ Web Application Development Development of high-performance web applications using modern JavaScript frameworks. I handle both client- and server-side logic, ensuring seamless integration between components. My experience covers full-cycle product development, from UI design to backend services and database architecture. ⚙️ Cross-Platform Mobile Development with React Native Development of mobile applications for both iOS and Android using React Native (Expo and CLI). I create responsive, high-performance mobile interfaces with native features, custom animations, and API integrations. My workflow includes efficient state management, platform-specific optimizations, and smooth user experiences across devices. ⚙️ API Development and Integration Design and implementation of custom RESTful and GraphQL APIs. Integration of third-party services such as Stripe, Twilio, Google Maps API, and more. I implement secure authentication and authorization mechanisms using JWT, OAuth, and custom security flows. ⚙️ Real-Time Systems and eCommerce Solutions Development of real-time functionalities including chat systems, live updates, and event-driven features using WebSockets. Building customized eCommerce systems with payment gateway integration (Stripe, PayPal), inventory tracking, cart logic, and order processing pipelines. 🖥 Technical Skills 💡 Front-End JavaScript, TypeScript, React.js, Next.js, React Native (Expo/CLI), Tailwind CSS, SCSS, Bootstrap, Material UI, Ant Design, HTML5, CSS3 💡 Back-End Node.js, Nest.js, GraphQL, Docker 💡Databases PostgreSQL, MongoDB, Prisma, SQL, NoSQL 💡 Tools and Platforms Stripe, Firebase, Zustand, AWS, WordPress, Google Maps API, Google Analytics 💡 Testing and API Tools Postman 🖥 Technologies and Keywords JavaScript, TypeScript, React, React Native, Next.js, Node.js, Nest.js, GraphQL, REST APIs, PostgreSQL, MongoDB, Prisma, Firebase, Stripe, Twilio, Google Maps API, Redux Toolkit, Zustand, RTK Query, TanStack Query, ZOD, Docker, OAuth, JWT, SCSS, Tailwind CSS, NativeWind, Axios, Framer Motion, Shadcn UI, Mailjet API, Toast, Vercel, Material UI