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Alfonso Cartes, Senior Full-Stack Engineer
Alfonso Cartes · Cyprus, EU

About · Senior AI product engineer

Production AI inside real products, shipped end to end.

Software since 2005, React Native since 2021. I own the AI, the app, the TypeScript backend, and the release.

Available for contracts · Full US Eastern overlap · 9–5 ET

Open to full-time roles via EOR or an EU entity, and to contracts through Wandity Ltd.

What I bring

One senior engineer across the AI, the app, and the systems behind both.

AI product engineering

Production AI running inside shipped products — Workers AI pipelines, structured LLM output, and the edge infrastructure that serves them.

React Native depth

Architecture, Expo, offline data, native integrations, performance, difficult upgrades, and store releases.

Full-stack delivery

The TypeScript applications, APIs, real-time systems, data models, and Cloudflare infrastructure behind the app.

Product judgment

Founder-level understanding of users, commercial tradeoffs, delivery risk, and what the software needs to achieve.

How I work

I own the path from architecture to production.

I'm a senior AI product engineer based in Cyprus (EU), with software experience since 2005 and React Native since 2021. My focus is production AI running inside shipped products: Workers AI vision, translation, and moderation pipelines inside a solo-built 62-screen P2P React Native marketplace, backed by its Cloudflare Workers, D1, KV, and Durable Objects infrastructure.

React Native is where that experience runs deepest: food ordering and payments, real-time features, travel applications released through the App Store, and leading engineering on an offline-first iPad sales system.

Clients work directly with me from product and architecture decisions through implementation, release, and production follow-through. The backend is part of that ownership: TypeScript APIs, Cloudflare Workers, and the web systems around the app.

I use the user experience as the measure of success, covering performance, accessibility, Core Web Vitals, SEO, and the operational decisions required to keep a product dependable after launch.

Career foundation

Engineering depth with founder perspective.

I started as a freelance web developer in 2005, then worked at Informa D&B and Apple before building software inside my own companies and for client product teams. I hold a Computer Engineer degree (Ingeniero en Informática, MECES 3 / EQF 7) from the Universidad Autónoma de Madrid.

I also have 10+ years of experience in product, marketing, and business. I've founded and run three businesses and launched products in food manufacturing, international commerce, and software. That mix helps me understand users, commercial constraints, and the people building the product—judgment that matters even more in the AI era.

Have a project in mind?

Tell me what you're working on and where you need help.