Portrait of David Vargas Domínguez

David Vargas Domínguez

Senior Fullstack Developer

I'm David, a fullstack & mobile developer. I've spent seven years building web and mobile products that run in production: today I work on digital banking at Interbank, before that I spent four years on the Global66 fintech app, and I led the frontend team at FractalUp.

Outside of work I build my own tools, almost always on Cloudflare, like atajo and RutaSec, and I write (in Spanish) about what I learn in development, automation, and cybersecurity.

If you have a web, mobile, or automation project in mind, email me at hola@davosdo.dev or tell me about it here. I reply within 24 hours.

Now

  • Multi-tenant platform for EA SPORTS FC Clubs leagues and cups: schedules, official results, standings, and rankings.

  • Pill organizer and alarm for iOS and Android built with Flutter. No accounts, no backend: your data stays on your phone.

Experience

Full experience

Projects

  • RutaSec in production

    Cybersecurity learning catalog with curated resources, a personal library, and progress tracking on Cloudflare.

  • atajo in production

    Personal, open-source URL shortener with edge redirects, organization, and detailed analytics on Cloudflare.

  • Misgastos Workflow in production

    Personal workflow for logging expenses from Telegram with n8n, Supabase, AWS Bedrock, and Metabase, without building an app.

All projects

Writing

All articles · I write in Spanish.

Services

  • Web Apps Let's talk

    From idea to product. I build SaaS products, dashboards, and portals with solid architecture, edge performance, and code that lasts.

  • Mobile Apps Let's talk

    Your app on iOS and Android without doubling the budget. Native experiences with Flutter, ready to scale from day one.

  • Ecommerce Let's talk

    Stores that convert. Design, catalog, checkout, and payment gateway tuned so you sell more with less friction.

  • Automation Bots Let's talk

    Get rid of repetitive work. Bots and pipelines that track, notify, and serve customers while you sleep.

  • Tools that fit your workflow. Custom scripts and CLIs so your technical team works twice as fast.

  • AI Apps Let's talk

    AI that solves real problems. Assistants, semantic search, and agents trained on your business, not on generic demos.

Contact

Want to tell me about your project in more detail? Use the form.