<sergio/>
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Experience

  • Jul. 2025 - Present

    Frontend Engineer

    Freelance

    Building custom web applications and sites with React and Next.js, with a strong focus on performance, maintainability, and user experience.

    Translating business requirements into clear technical solutions, working directly with clients to ensure deliverables align with their goals.

    Implementing reusable component architectures that reduced development time on follow-up projects.

    Strategically leveraging AI tools to speed up feature delivery without compromising quality or best practices.

  • Jan. 2022 - May. 2025

    Frontend Developer

    Microvoz

    Refactored components into a reusable architecture, reducing technical debt and speeding up feature delivery by 25%.

    Modernized the UI of a call-center-style management system, achieving a 40% improvement in usability.

    Optimized interaction flows and visual consistency, increasing the platform's operational efficiency by 20%.

    Integrated and optimized APIs to improve response times and system stability.

  • Jul. 2021 - Dec. 2021

    Frontend Developer

    RollingCode School

    Built reusable components for educational applications, improving interface consistency and scalability.

    Integrated APIs and optimized features to reduce response times.

    Implemented technical improvements that enhanced the product's stability and maintainability.

Projects

Ebusa website
  • React
  • Astro
  • SCSS
  • TailwindCSS
  • Nanostores

Ebusa Real Estate Consultants

View details
Loan management system
  • React
  • Zustand
  • TailwindCSS
  • Express
  • Firestore

Loan Management System (Financial PWA)

View details
Pet adoption platform
  • Next.js
  • Supabase
  • PostgreSQL
  • TailwindCSS
  • RLS
  • Vercel

Pet Adoption & Management Platform (Social SaaS)
in progress

View details
Kmon website
  • Astro
  • TailwindCSS
  • Express
  • Nodemailer

Kmon – Corporate Transportation

View details
JavaScript Quiz
  • React
  • Zustand
  • TailwindCSS
  • TypeScript

JavaScript Quiz

View details

Skills

Languages

  • > JavaScript
  • > TypeScript

Frameworks & Libraries

  • > React
  • > Nextjs
  • > Astro
  • > Express
  • > Zustand

Databases

  • > MongoDB
  • > SQL (in progress)
  • > Firestore

Other

  • > HTML
  • > CSS
  • > SCSS
  • > Tailwindcss
  • > Nodejs
  • > Git
  • > GitHub

Soft Skills

  • > Agile Methodologies - SCRUM
  • > Teamwork
  • > Communication
  • > Time Management

About me

I'm a Frontend Developer with 3+ years of experience building modern web applications with React, Next.js and Astro. I focus on crafting clean, efficient, and maintainable interfaces — always prioritizing performance and user experience.

I work with a product-oriented mindset: I translate business requirements into solid technical solutions, applying best practices and component-based architecture.

I'm looking to grow within teams where I can take on increasingly complex challenges and actively contribute to the quality of the final product.

If you're looking for a frontend developer with technical judgment and a results-driven approach, let's talk.

Contact