I’m Vlada Marchenko, a frontend developer focused on building high-performance, responsive web applications with React, Next.js, and TypeScript. I have hands-on experience with secure authentication, RESTful API integrations, and managing complex state.
I deliver clean code and intuitive user interfaces for modern web solutions, collaborating with teams to ship reliable software.
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Problem: Developing a platform for drug store owners to manage inventories and track real-time sales statistics.
Key Features: Secure JWT authentication with session persistence (cookies/localStorage), dynamic shop-specific routing, and complex database relationships.
Stack: Next.js, TypeScript, Node.js, Express, MongoDB, Yup.
Problem: Creating a high-conversion vehicle rental platform with dynamic filtering and optimized performance.
Key Features: Adaptive layout for all devices, dynamic catalog filtering (location/price/type), and reusable UI component architecture.
Stack: Next.js, TypeScript, REST API, CSS3.
Problem: Building a responsive reading tracker with real-time session validation and statistics.
Key Features: Start/stop session flow with validation via Yup, dynamic progress indicators (circular statistics/bars), and robust API error handling.
Stack: React, TypeScript, React Router, CSS Modules, React Toastify.
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