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Mario Valentin Fraire TepoxMV

Mario Valentin Fraire Tepox

Jr. Full-Stack Developer

€100/day
Ciudad de México, MX
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Mario Valentin

💻 Jr. Full-Stack Developer | Web Apps & Custom Solutions

I am a Jr. Full-Stack Developer with experience in designing, developing, and deploying modern web applications. I primarily work with HTML, CSS, JavaScript, and TypeScript, using Vue 3 and React.js on the frontend, and Node.js with MongoDB on the backend.

I have developed and integrated REST APIs, authentication systems with JWT, and payment gateways like Mercado Pago, always focusing on functional, secure, and business-oriented solutions. I also have knowledge of OOP with Java and a foundation in C#, which allows me to adapt easily to different environments and architectures.

I have experience deploying projects on AWS, Railway, and Vercel, as well as designing interfaces using Figma, paying attention to both the technical aspects and user experience.

🔧 How can I help you?

Landing pages and corporate websites

Web applications with Vue or React

Bug fixing and improvements in existing projects

Integration of APIs and payment systems

Optimization and deployment of applications

📅 Availability:
I mainly work on small to medium-sized projects with clear deliverables and am available on weekends, ideal for specific tasks, quick improvements, or developments with defined timelines.
  • Spanish

    Native or bilingual

  • English

    Conversational

Remote only
Primarily works remotely

Experience

  • Bufin del Norte S.A.S. de C.V.
    Full-Stack Developer
    January 2025 - September 2025 (8 months)
    Torreón, COA, Mexico
    • • Complete development of a web services sales platform.
    • • Backend implementation with Node.js, MongoDB, and modular API with JWT.
    • • Frontend development in Vue 3 using Pinia, with integration to Mercado Pago.
    • • Deployment on Railway (API) and Vercel (frontend).
    Front-End Development VueJS Express Node.js Landing Page
  • Bufin del Norte S.A.S. de C.V.
    Front-End Developer
    November 2024 - January 2025 (2 months)
    Torreón, COA, Mexico
    • • Design and development of a static institutional page with HTML, CSS, and JavaScript.
    • • Layout based on Figma with responsive design and optimized for modern browsers.
  • Discalse
    Jr. Full-Stack Developer
    September 2025 - Today (9 months)
    Torreón, COA, Mexico
    • • Development of a cross-platform application using React Native with Expo for the mobile frontend.
    • • Implementation of web frontend in Vue 3.
    • • Backend development with Express.js and REST API architecture.
    • • Integration of Socket.IO for real-time communication (user presence, states, and events).
    • • Participation in the design of the application's architecture and flows.
    React.js Front-End Development React Native Socket.io Vue.js

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Education

  • University Technical Degree
    Technological University of Torreón
    2025
    Técnico Superior Universitario
  • Engineering
    Technological University of Torreón
    2026
    Ingeniería

Skill set

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