Senior Full Stack Software Engineer
Alfonso Cartes
Senior React Native & Full-Stack TypeScript engineer. I ship mobile products end to end — with AI in production on Cloudflare's edge.
Based in Cyprus (EU) — working US Eastern hours (9–5 ET): full overlap for standups and pairing.
15+ years experience
7+ React Native apps built, 4 shipped
AI in production (Workers AI, Claude Agent SDK)
Clients in US/UK/EU
Recent Work
A few recent projects across web and mobile.
Agorani
Mobile-first P2P marketplace for Cyprus — built solo end to end, from first commit to app-store submission.
Guides
AI voice travel-guide app — speech in and out, LLM narration, subscriptions.
Abrila Web
Offline-first B2B e-commerce platform for Fabrilamp, a Spanish lighting fixtures distributor. Role-based dashboards for salesmen, customers, and admins across a catalog of thousands of products.
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.
Let's Work Together
Have a project in mind? I'd love to hear about it.
I contract through my own EU company, Wandity Ltd. US clients: one W-8BEN-E, standard vendor invoice — no 1099s, no withholding, no employment overhead.