Senior Software Engineer (React Native)

Location: Madrid, Spain (Slightly Preferred) or Miami, FL — 100% In-Person (Daily in-office, ~25% flexible remote days). Company Size: Early stage (3 full-time engineers). Mission: Global, non-custodial web3 banking app with a flawless mainstream UX. About Tuyo We are building a global, non-custodial app that works like a bank account inside your phone, removing all the complexity of crypto for the end user. The Traction: $5 M Seed round from top US/EU investors. Operating in 130+ countries with a viral Visa debit card product. The Founders: Jorge Izquierdo (co-founder of Aragon, built core Ethereum infrastructure holding $30 B+) and Alejandro Perezpayá (ex-Allfunds, $1.5 T AUM bank). The Role As one of our first founding-level engineering hires, you will own major parts of Tuyo’s React Native app end-to-end. We run a shared-ownership model across the whole stack—mobile is your entry point, not a boundary. We deeply care about product feel, animations, and delighting users. Key Respons...