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Javier UbedaJU

Javier Ubeda

React & Next.js | Robust TypeScript Applications

€250/day
Barcelona, ES
0-2 years

Average response time: 1 hour

About Javier

I specialize in robust TypeScript development.
Focused on delivering scalable and reliable applications that reduce production bugs by more than 80%, using modern frameworks such as Next.js with React.
  • Spanish

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • Freelance Software Developer
    Frontend Developer
    December 2025 - May 2026 (5 months)
    • Delivered Next.js and TypeScript applications, achieving 80%+ coverage.

    • Built an AI resume tool to process 70+ candidate profiles at once.
    Typescript React.js Next.js React Testing Library Jest
  • OgilvyES
    Frontend Developer
    August 2024 - November 2025 (1 year and 3 months)
    - Enhanced user acquisition with JavaScript for +2 clients.

    - Optimized complex multi-step forms with Jest, reducing validation errors by 76%+
    JavaScript Jira Jest TailwindCSS TDD

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