I am a Senior Mobile Architect with full-stack proficiency across Android (Kotlin) and iOS (Swift / SwiftUI), specializing in Payments SDKs and AI integration for Fintech, Healthtech, Entertainment, and Marketplaces.
9+ years building high-trust mobile systems at scale — including the Leboncoin Messaging module re-architecture (June – December 2025, 10M+ users) that cut response latency by 40%, native NFC/BLE payment modules across Android and iOS, and AI agents in production powered by LangChain/LangGraph.
I operate as a B2B contractor through Parallel Digital LLC — frictionless international compliance for EU, UK, and US clients. Based in Barcelona under the Spanish Digital Nomad Visa, remote-first, B1/B2 USA Visa.
I approach software engineering with the same discipline I learned as a professional Cellist: prioritizing structure, harmony between modules, and precise execution.
- 🔭 Current focus: Mobile-first AI integration — bridging native clients (Kotlin/Swift) and agentic backends (Python, LangChain, LangGraph, MCP, Claude, Gemini).
- 🛠 Building actively: Cross-platform mobile architecture with Kotlin Multiplatform (KMP), Payment SDK modernization, on-device + server-side LLM workflows.
- 🤝 Available for: Mobile platform architecture · Payment SDK / NFC integrations · AI-augmented mobile experiences · KMP adoption.
const jesus = {
mobile: ["Kotlin", "Swift", "SwiftUI", "Kotlin Multiplatform (KMP)", "Jetpack Compose"],
ai_stack: ["LangChain", "LangGraph", "Claude", "Gemini", "MCP", "RAG"],
backend: ["Python", "Haskell", "Appwrite", "Apollo GraphQL", "REST", "WebSockets"],
payments_iot: ["Braintree", "Google Pay", "NFC", "BLE (Bluetooth LE)", "Payment SDKs"],
architecture: ["Clean Architecture", "MVVM", "MVI", "Offline-First Sync", "State Machines"],
infra: ["AWS", "Docker", "Firebase", "CI/CD (Gerrit, GitHub Actions)"],
testing: ["JUnit", "XCTest", "Espresso", "TalkBack accessibility"]
};Mobile & Multiplatform
AI, Backend & Data
Payments, IoT & Hardware
- 💼 B2B contractor via Parallel Digital LLC (Ohio, USA) — clean compliance for EU/UK/US clients
- 🌐 Remote-first, Barcelona-based · open to hybrid in Barcelona
- 🇪🇸 Spain — Digital Nomad Visa (full work authorization)
- 🇺🇸 USA — B1/B2 Visa
- ⏰ Time zones served: CET (primary) · EU · UK · US East/West (with overlap)
I believe great engineering requires technical rigor and creative passion.
- 🎻 The Musician: Trained Cellist (Simon Bolívar Conservatory). I create musical arrangements and currently learning Piano. Music taught me that "synchronization" isn't just a thread concept — it's how teams succeed.
- 🌌 The Jedi: Huge Star Wars fan — the lore, the technology, the philosophy. This is the way.
✈️ The AvGeek: Aviation enthusiast. I love planes and the engineering marvels that keep them in the sky.- ⚽ The Fan: Loyal FC Barcelona (Barça) supporter. Visca el Barça!
Language enthusiast — learning new languages rewires the brain like new code paradigms.
- 🇺🇸 English — Professional Working Proficiency (C1)
- 🇪🇸 Spanish — Native
- (CAT) Catalan — Professional Working Proficiency
- 🇩🇪 German — Currently learning
- 🇫🇷 French — Future goal
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⭐ Star a repo if you find it useful — open to discuss interesting mobile + AI integration challenges.