Senior Full Stack Software Engineer
Alfonso Cartes
Let's bring your ideas to life. Let's design and develop experiences that enrich people's lives.
What I Do
I design and build high-performance web and mobile applications that put the user experience first. From concept to deployment, I focus on clean architecture, fast load times, and interfaces that feel natural.
Web Applications
Full-stack web apps with React, Next.js, and Remix. Server-rendered for SEO, optimized for Core Web Vitals, and built to scale.
Mobile Apps
Cross-platform iOS and Android apps with React Native and Expo. Over 90% shared code, native performance, and a single codebase.
E-Commerce & Platforms
Custom e-commerce solutions, white-label platforms, and SaaS products. From checkout flows to admin dashboards and API integrations.
Current Tech Stack
React / React Native
Next.js / Remix
TypeScript
TailwindCSS
Node.js
My Approach
I believe the frontend is where products succeed or fail. A one-second delay in page load can cost conversions. A confusing interface drives users away. That's why I take a customer-obsessive approach to development — every decision is measured by how it impacts the person using the product.
With over a decade of experience across startups and enterprises — from Apple Retail to leading engineering at food-tech and travel platforms — I bring both technical depth and product thinking to every project. I've shipped web apps serving hundreds of restaurants, built cross-platform mobile apps from the ground up, and optimized existing products for speed and accessibility.
Whether you need a new web application, a mobile app for iOS and Android, or improvements to an existing product, I'd love to help you build something that makes a difference.