Alfonso Cartes
Senior Full-Stack Engineer · React, TypeScript, React Native, Next.js, Node.js
Fully remote
I have built software since 2005 and used React Native since 2021 to ship web and mobile products with React, TypeScript, Next.js and Node.js. My work includes a marketplace live on both app stores and LLM features for vision, translation and moderation.
Portfolio
Agorani
Live on the App Store & Google Play
Solo-built P2P marketplace with AI photo-to-listing, real-time chat and five-language translation.
Abrila — Offline Sales System
Client production system · 2024–2026
Offline-first iPad sales app for 5,000+ products, connected to a Next.js B2B platform.
Kukd.com — Mobile Ordering
Shipped mobile app · v2.2.0
Lead mobile engineer on a food-ordering app with Checkout.com and PayPal payments.
Experience
- Mar 2026 – Sep 2026
Agorani (Wandity Ltd)
Senior Full-Stack Engineer, Founder
Built and launched a 62-screen marketplace solo: Expo app, Hono and tRPC API on Cloudflare Workers.
Case study → - Jun 2024 – Feb 2026
Abrila / Fabrilamp
Senior Software Engineer
Led a team of two across a Next.js B2B platform and an offline-first iPad app for 20 months.
Case study → - Aug 2024 – Nov 2024
CybaVerse
Senior Full-Stack Engineer
Built the web vulnerability scanner feature set on tRPC and Hasura GraphQL, with tests.
Case study → - Feb 2024 – Jun 2024
Wandity Ltd
Senior Full-Stack Engineer, Founder
Rebuilt Wandity Community as an events app on Expo, Next.js and a Hono and Drizzle API.
- Apr 2023 – Feb 2024
Team Gearflow
Senior Software Engineer
Built the supplier ordering and inventory system on a 44-entity Prisma domain.
Case study → - Jan 2023 – Apr 2023
Capply
Senior Software Engineer
Owned the admin shipment console: carrier filters, pricing visibility, quotes and routes.
Case study → - May 2022 – Dec 2022
Cartes Ltd
Senior Full-Stack Engineer, Founder
Built Wandity Community as a TypeScript monorepo on Node, Express, Prisma and PostgreSQL.
- Nov 2020 – Apr 2022
Kukd.com
Senior Software Engineer
Led mobile engineering and shipped the Expo app to the App Store and Google Play.
Case study → Earlier roles · 2005–2021
- Co-founder & Engineer · Teist Soluciones S.L. · 2013–2021
- Director of Operations · Ingredients Trading 71 C.A. · 2013–2013
- Junior Full-Stack Developer, part-time · Informa D&B · 2012–2013
- Sales and Technical Support · Apple Inc. · 2010–2011
- Freelance web and e-commerce work · Self-employed · 2005–2018
Skills
- Frontend
- ReactTypeScriptNext.jsAstroTailwindCSSTanStack Query (React Query)
- Mobile
- React NativeExpoExpo RouterNativeWindEAS BuildMaestro E2E
- Backend & data
- Node.jstRPCHono.jsREST APIsPrismaDrizzle ORMPostgreSQLSQLite
- AI
- LLM integrationtool callinghuman-in-the-loop reviewvision, translation and moderation pipelines
- Delivery
- VitestPlaywrightGitHub ActionsSentryGitAccessibility
Spanish (native) · English (fluent)
Education
Computer Engineer (Ingeniero en Informática, MECES 3 / EQF 7) · Universidad Autónoma de Madrid, 2013 · Erasmus year · Roma Tre University, 2011 – 2012
Get in touch
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