Carlos León
enes

Projects

Things I've built.

Products and client work on one side, data and ML pipelines on the other. Each one links to a short write-up: the problem, what I built, and the decisions behind it.

Things I've built

  • DataForge

    Live · free beta

    Certification prep SaaS with practice mode, timed mocks, and a gamified study loop.

    • React
    • Vite
    • Supabase
    • PostgreSQL
    • Vitest
    Video

  • X-Ray

    Live demo

    Financial-health engine that scores 1,286 companies from their bank trail. HackSpain 2026, Embat track.

    • Python
    • FastAPI
    • DuckDB
    • scikit-learn
    • Next.js
    Video

  • Wealth Tracker

    Live · public demo

    Self-hostable net-worth dashboard with live prices and natural-language journaling.

    • Next.js
    • TypeScript
    • Supabase
    • PostgreSQL
    • LLM
    Video

  • irisverd

    Live · shop coming soon

    Editorial website for a handmade clothing atelier, built for a real client.

    • Next.js
    • TypeScript
    • Tailwind CSS
    • Vercel

Data products

  • Madrid NO₂ Forecasting

    Leakage-safe forecasting of station-level NO₂ in Madrid at 1, 24, and 72 hours ahead.

    • Python
    • PostgreSQL
    • dbt
    • XGBoost
    • pytest

  • Chicago Taxi Trips vs Weather

    End-to-end GCP pipeline combining Chicago taxi trips and weather signals.

    • Google Cloud
    • BigQuery
    • dbt
    • Terraform
    • Cloud Functions

  • NBA Data Pipeline

    ELT pipeline for NBA data with Snowflake and dbt, modeled in bronze, silver, and gold layers.

    • dbt
    • Snowflake
    • SQL
    • Power BI
    • ELT