> +4 years of experience. Fullstack Developer from Málaga, Spain 🇪🇸. Focused on React and Next.js, with experience in Angular and NestJS.
Development of enterprise applications with Angular for Stibo DX. Implementation of scalable frontend architectures, reusable components and advanced state management. Collaboration in multicultural teams in remote mode, applying development best practices and clean code.
Designed and optimized applications with Next.js and Astro, improving load speed and user experience. Implemented modular UI architectures with Zustand, reducing code duplication. Collaborated on backend with NestJS and Express, optimizing REST APIs. Managed PostgreSQL databases with Prisma ORM, reducing response times. Secured authentication with Clerk and collaborated with designers in Figma.
Developed hybrid application in Expo (React and React Native) for desktop and mobile. Built payment platform in Next.js with Stripe integration for subscription automation. Implemented API in NestJS (Fastify) for communication with ISTAT Italy, sending tourist data in JSON. Improved data synchronization with Redux and React Query. Secured interactions with OAuth and JWT.
Automated API integration and data transformation processes in Flowize (Low‑Code), optimizing efficiency in business operations. Collaborated in a hybrid team in Málaga, developing solutions for multiple clients.
Compress, convert and resize images instantly in the browser. Support for JPEG, PNG, WEBP and HEIC. 100% free and private. Client‑side processing without uploads.
Automates Google Analytics 4 setup using declarative YAML files. Features pre‑flight validation, dry‑run mode and Admin API integration. Built with Go 1.25 with cross‑platform support.
Visualize how your investments can grow over time with compound interest. Interactive simulator to plan your financial goals.
01 My name is Oscar Gallego and I'm a full stack developer with experience in frontend, backend and infrastructure. I started my career in technology after a professional pivot and since then I've worked with technologies like Next.js, NestJS and Astro to build scalable web applications.
02 Throughout my career, I've worked at companies like MavelPoint, Check‑in Scan and AddComm, where I optimized web application performance, implemented microservices and improved software architecture, achieving load time reductions of up to 50%.
03 Additionally, I'm passionate about continuous learning, code optimization and learning how startups validate their ideas technically. Currently, I'm focusing on React and Next.js, while deepening my skills in NestJS and product architecture.