Designed and implemented a multi-page car rental web application supporting filtering by brand, price, and mileage, favorites management, and booking via intuitive forms. Integrated backend APIs with Axios, implemented global state management, and developed reusable, DRY components, interactive booking notifications, and optimized component performance.

GitHub Repository: github.com/AlejandroMotyl/RentalCar

Live Demo: rental-car-bice-chi.vercel.app

Contributed to a 12-member team building a Next.js app for supporting pregnant mothers throughout their pregnancy journey. Developed Next.js backend routes and reusable API request functions to unblock team progress and improve efficiency; created testing component for all API requests. Implemented a token-refresh mechanism to handle expired access tokens and improve reliability. Actively coordinated with backend developers, conducted pull request reviews, fixed styling and middleware issues, and ensured high code quality during a fast-paced one-week sprint.

GitHub Repository: github.com/AlejandroMotyl/Lehlehka

Live Demo: nestly-alpha.vercel.app

Developed a fully responsive online bookstore featuring 5+ interactive UI components, including Swiper.js sliders and iziToast notifications. Integrated real-time external API data to display books and categories, improving user engagement. Optimized component reusability, ensured cross-browser compatibility, and delivered a polished interface. Presented the project live, explaining design and technical decisions, usability improvements, and performance optimizations.

GitHub Repository: github.com/AlejandroMotyl/x-team-booksy

Live Demo: rocketreact.github.io/x-team-booksy