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Juaquin GonzalezJG

Juaquin Gonzalez

Frontend Developer | React & Next.js Specialist

€150/day
Barcelona, ES
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Juaquin

Frontend Developer specialized in creating modern and scalable interfaces with React.js and Next.js. My technical background in Automation and Robotics provides me with an analytical and structured vision for solving complex logic and performance problems.

I have worked on independent projects implementing solid architectures with TypeScript, efficient styling with Tailwind CSS, and robust backends with Node.js. My goal is to transform business ideas into fast, accessible digital products with an impeccable user experience (UX).
  • Spanish

    Native or bilingual

  • French

    Basic

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • Proyecto Independiente / Software Open Source
    Python Software Engineer (Desktop Applications)
    TECH
    December 2025 - March 2026 (3 months)
    Barcelona, Spain
    Designed and developed MBox Manager, a high-performance desktop application for managing massive data files (.mbox). The project solves the problem of handling large email files by using asynchronous processing (threading), allowing fluid navigation without blocking the interface.

    Technical project milestones:

    Data Handling: Implemented advanced logic with Pandas for filtering, sorting, and exporting data to .xlsx and CSV formats.

    UI Architecture: Creation of a modern and responsive interface using CustomTkinter with a dynamic theme system.

    File Logic: Development of a system for detecting and extracting MIME attachments (inline and attachments) and decoding complex headers in UTF-8.

    Optimization: Integration of background threads and queues for real-time communication between the search engine and the graphical interface.
    Python Pandas Software Architect Desktop Application Development Data Processing
  • Freelance / Independent
    Frontend Developer Specialist
    INTERNET OF THINGS (IOT)
    September 2022 - Today (3 years and 9 months)
    Buenos Aires Province, Argentina
    Led the development of interactive and responsive interfaces using React.js and Tailwind CSS, focusing on performance optimization and user experience (UX). Implemented data visualization solutions and ensured code scalability through TypeScript. My approach combines technical rigor with clean and functional design, guaranteeing digital products that not only work but convert. Additionally, I manage version control with Git/GitHub and ensure efficient deployments in environments like Vercel or Netlify, guaranteeing optimal loading times (Core Web Vitals).
    React.js Next.js TypeScript TailwindCSS UI/UX Design

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Education

  • tecnico superior en automatizacion y robotica, Ingeniería electrónica, robótica y mecatrónica
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    2023
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Skill set

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