Frontend Architect

Building scalable
TypeScript UI platforms.

I've spent 12+ years leading frontend architecture for enterprise products — from generative AI experiences shown at FITUR to white-label ecosystems used across travel brands.

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Selected work

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Freelance

  • Jaume Joan

    Personal trainer site — design & build

    2026

    End-to-end freelance project — design and development — for a Mallorca strength coach and natural-bodybuilding champion. A Next.js marketing site with in-person and online coaching offers, a client-transformation gallery, testimonials and direct WhatsApp/contact routes, built to turn visitors into the limited number of spots he takes each month.

    Next.jsReactTypeScriptUI/UX Design
  • CATAI

    Travel agency website — frontend

    2022

    Freelance frontend development for a Spanish travel agency specialised in large, tailor-made trips. An image-rich marketing site — destination and trip-type browsing across continents, downloadable catalogues and a custom trip-configurator entry point — built in vanilla JavaScript and kept fast and legible under a catalogue that spans dozens of regions.

    JavaScriptHTMLCSSResponsive
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About

I'm a frontend architect and Staff-level engineer, based in Mallorca, working fully remote.

My focus is transforming frontend development from feature delivery into platform capability — designing systems that let multiple teams ship consistently, reducing technical friction, and aligning architectural decisions with long-term business objectives.

Currently leading frontend architecture at Bravent, a Microsoft Gold Partner consultancy, where I embed with client engineering teams as the frontend authority across travel, public-sector, QSR and non-profit. Previously spent 8+ years owning the frontend ecosystem at Ávoris (Grupo Barceló).

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Lab

  • Self-reasoning research brain (Obsidian + RAG)

    2025 — Present

    A knowledge system over a plain-text Obsidian vault that ingests, indexes and reasons over itself: a local RAG copilot, a knowledge graph, an LLM-as-judge evaluation benchmark, and an autonomous ingest → synthesis → questions loop.

    PythonOllamaRAGReactTypeScript
    Code on request
  • Equities & ETFs signal lab

    2025 — Present

    A personal research system over US equities and ETFs: it detects technical signals, scores their T+5 outcome, and reports honest metrics (Wilson confidence intervals, documented biases). Causal backtests with no look-ahead, 8 statistical edge-validation tests, ~560 automated tests, forensic audits.

    PythonFastAPIpandasReactVite
    Lab + paper trading — not financial advice.Code on request
  • Crypto swing-trading lab

    2025 — Present

    A full-stack crypto swing-trading system: YAML-declared strategies, a backtest simulator with realistic costs, walk-forward validation, and a live health monitor with alerts. ~965 automated tests, ADR-driven, running as Windows services.

    PythonFastAPISQLitepandasReact
    Paper trading only (Binance testnet) — not financial advice.Code on request
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Get in touch

Open to interesting conversations about frontend platforms, design systems, and technical leadership.

Open to remote roles · Based in Spain (CET) · EU work authorization. English working proficiency.

I don't keep a public GitHub — most of my work has lived inside enterprise environments under NDA — but I'm happy to walk through code, architecture decisions, or do a live technical conversation whenever it makes sense.

Jorge Raboso Barceló — Frontend Architect