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DataDave-Dev/README.md

Sheet 01 — David, full-stack developer · Ingeniero Administrador de Sistemas · UI, API and data tiers

Full-stack developer. I design and ship complete products — interface, API, database, deploy — not slices of one.

Next.js and Astro on the front. Node and Python on the back. SQL Server, PostgreSQL and SQLite underneath. And when a product has to answer business questions, I build the pipelines, dashboards, and AI tooling that make it answer them.

02 · WORK

Detail 01 — becwright: deterministic pre-commit guardrails for AI-generated code Detail 02 — weftmap: paste code, get an interactive call graph Detail 03 — modlane: adaptive AI model router for coding agents Detail 04 — valora: open-source personal finance app

NOT SHOWN ON THIS SHEET — multi-company ETL pipelines, daily margin reporting with email alerts, and a WhatsApp pricing-approval bot. Private, internal business systems.

03 · OPEN SOURCE

Ref 3.1 — La Velada del Año V: 34 merged pull requests into midudev/la-velada-web-oficial, covering performance, accessibility, security, testing and UI redesign Ref 3.2 — Spider-Man: Brand New Day: 23 merged pull requests into midudev/spiderman-brand-new-day, covering accessibility, SEO and performance Ref 3.3 — Omarchy: merged pull request into basecamp/omarchy, a 24.4k-star Linux distribution, fixing the Wi-Fi passphrase prompt after a wrong saved password

TOTAL — 58 merged pull requests into upstream repositories with 26k+ combined stars. Accessibility, performance, SEO, security, testing and UI work.

04 · GENERAL NOTES

Sheet 04 — general notes: products shipped end to end; internal systems running daily across a multi-company group; pricing and margin reporting automated; ETL pipelines and dashboards for sales, inventory and strategy

05 · PARTS LIST

Sheet 05 — parts list. 01 Frontend: TypeScript, JavaScript, React, Next.js, Astro · 02 Backend: Node.js, Python, PostgreSQL, SQLite · 03 Data: SQL Server, Power BI, Pandas · 04 Infra: Docker, Git, Vercel

CONTACT

deleonalonso77@gmail.com · github.com/DataDave-Dev

Build things that solve real problems.

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  1. midudev/la-velada-web-oficial midudev/la-velada-web-oficial Public

    Web oficial de La Velada V de Ibai Llanos

    HTML 1.9k 886

  2. becwright becwright Public

    Deterministic pre-commit guardrails for AI-generated code: rules that carry their why, block violating commits, and travel between repos (BECs). Any language, no Python required.

    Python 3 7

  3. weftmap weftmap Public

    Pega código y obtén un grafo de llamadas interactivo (Python/JS) — Next.js + tree-sitter + React Flow

    TypeScript 4 9

  4. valora-official valora-official Public

    Open-source personal finance app — track income, expenses, credit cards, and loans in real detail. No subscription, no spreadsheets. Next.js 16 + SQLite.

    TypeScript 1

  5. Send-Mails Send-Mails Public

    Sistema para Envios de Correos Masivos con Rate Limiter / System for Sending Mass Emails with Rate Limiter

    Python 1

  6. midudev/spiderman-brand-new-day midudev/spiderman-brand-new-day Public

    Web oficial española para la película Spiderman Brand New Day

    Astro 114 35