Keilin E.

My name is Keilin, I'm from Venezuela, and I have over 3 years of experience as a Web Developer working across both the frontend and the backend. In that time I've built everything from simple landing pages to full SaaS platforms with microfrontend architecture and monorepos — along with the APIs, databases, and server logic that power them. I don't just make things look good; I build complete, functional products that solve a real problem from end to end. On the frontend, my day-to-day is building Landing Pages, Websites, Web Applications, SPAs, PWAs, Dashboards, and SaaS platforms with reusable, clean, and scalable components. Well-structured code today means time and money saved tomorrow, so I make sure every component has a clear purpose, is easy to maintain, and can grow without breaking anything along the way. On the backend, I design and build REST APIs, authentication and authorization flows, and relational database schemas using Node.js, Express, PostgreSQL, MongoDB and Python. I handle the full data layer — from modeling and querying to integrations and business logic — so the product runs reliably under real usage, not just in a demo. Something that sets me apart is that I don't just execute tasks — I get involved in understanding the goal behind each project. When a client comes to me with an idea, I analyze what they actually need and propose solutions that make sense visually, technically, and architecturally. It's not about writing code, it's about writing the right code for each situation. ✅ Common problems I solve: - Slow websites and apps that need performance optimization - Broken or inconsistent interfaces on mobile that need a deep responsive fix - Projects with accumulated technical debt where the code needs refactoring to keep scaling - Migrations from outdated or legacy frameworks to modern stacks like React, Next.js, or Astro - Missing or messy backends that need well-structured APIs and clean database design - Hard-to-track bugs that have gone unresolved for a while - Lack of SEO best practices affecting search engine rankings - Applications with no automated deployment flow that need CI/CD implementation I'm also very familiar with responsive design principles, web performance optimization, server-side rendering (SSR), REST API and database design, 3D web animations using Three.js, GSAP and Framer Motion, and continuous integration and deployment workflows. 🔧 Technologies & Tools 🎨Frontend: - HTML5, CSS3, Tailwind CSS, Bootstrap, styled-components & Material UI - JavaScript & TypeScript - Figma - React, Next.js & Astro - Redux & Zustand - GSAP - Framer Motion - Three.js - Responsive Web Design ⚒️Backend: - Node.js & Express - Python - Prisma ORM - PostgreSQL - MongoDB - REST APIs, Authentication & Authorization - Supabase & Firebase 📈Dev & Deployment: - AI-assisted development: Claude Code, Codex, Cursor & Visual Studio Code - Git & GitHub - Vercel, Netlify & Cloudflare - CI/CD workflows If you made it this far, thanks for taking the time to read. If you have a project in mind — or you're wrestling with any of the problems above — feel free to reach out by clicking the button in the top right corner. I'm always happy to dig into the goal behind a project and find the best solution for each case. Looking forward to connecting!