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const leo = {
role: "Backend Developer (IoT) @ AIR Institute",
location: "Salamanca, Spain 🇪🇸",
experience: "6+ years building backend systems",
focus: ["IoT", "Microservices", "Clean Architecture", "API Design"],
stack: ["Node.js", "TypeScript", "Python", "PostgreSQL", "MongoDB", "Docker"],
learning: "always something new 🚀",
};Building reliable, scalable backend systems, from IoT device pipelines to fintech APIs. I care deeply about clean code, architecture decisions, and systems that don't break at 3am.
- 🔭 Currently: Backend Developer at AIR Institute, building IoT data services & APIs in Salamanca, Spain
- 🌱 Deep-diving into: Advanced microservices patterns, distributed systems, and IoT architectures
- 🏗️ Past highlights: Led backend development for a banking system (boosted test coverage 30% → 80%), built fintech APIs at a Brazilian startup, and 5+ years building full-cycle Node.js systems
- 📍 Based in: Salamanca, Spain (formerly Taubaté, Brazil 🇧🇷)
| 🎯 Achievement | 📈 Impact |
|---|---|
| Test coverage overhaul at YESbr | 30% → 80% coverage |
| Banking system rearchitecture | Clean Architecture + DDD |
| Dev productivity scripts | 60% faster file creation workflows |
| IoT backend @ AIR Institute | Real-time device data pipelines |
| Full project lifecycle ownership | Proposal → Design → Deploy → Feedback |
"Good architecture is not about doing things right — it's about making it easy to change things later."
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