j juan Sebastian Fernandez
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Notable Projects

Greenset Court

Landing de conversión real para cliente: arquitectura modular, parallax, slider y contadores animados con Intersection Observer. Formulario de calificación de leads con envío directo a WhatsApp vía JavaScript. Assets en WebP, deploy continuo vía GitHub + Vercel.

HTML5, CSS3, JavaScript ES6+, Vercel

Festival de Música Web

Landing responsiva con score Lighthouse optimizado, lazy loading y assets en WebP. Mobile-first y semántica HTML5.

SASS/SCSS, WebP, Lighthouse

Frontend Mentor Challenges

Uls pixel-accurate de componentes reales: cards, formularios y layouts complejos. Repositorios documentados y deployados.

HTML5, CSS3, JavaScript, Netlify

Frontend Mentor Challenges

Uls pixel-accurate de componentes reales: cards, formularios y layouts complejos. Repositorios documentados y deployados.

HTML5, CSS3, JavaScript. Netlify

Real Estate Website

Aplicación full-stack en desarrollo: interfaz web conectada a base de datos MySQL, gestión vía CLI.

PHP, MySQL, Full-Stack, CLI

Community Projects

Leading

landing page de conversion

Open
javascript react

Highlights

Multi-Project Contributor

Active contributor across 9+ repositories.

Experienced Professional

15+ years of professional experience.

Community Leader

Leading 1 community project(s) — building and guiding teams.

GitHub Stats

11

Public Repos

0

Stars Received

0

Followers

58

Recent Commits

1

Recent Pull Requests

0

Recent Code Reviews

Developer Growth

Contributions Month
Contributions

Contribution Activity

Less
More

Experience

Frontend Developer

Freelance Desarrollo Independiente

Diseñé y desarrollé sitios responsivos, landing pages y e-commerce con HTML5, CSS3/SASS y JavaScript ES6+ para clientes reales. Apliqué performance optimization en cada proyecto: WebP, lazy loading, compresión de assets y auditorías con Lighthouse. Implementé accesibilidad web (WCAG 2.1), ARIA, HTML5 semántico y cross-browser compatibility como práctica estándar. Workflow con Git/GitHub, CI/CD en Vercel, inspección de diseños en Figma y testing responsivo con Responsively.

2022-12 – Present

Vendedor & Gestión Digital

Bagués Cosméticos

Creación de materiales digitales y gestión de redes sociales orientadas a conversión y fidelización de clientes.

2019-01 –

Encargado de Turno

Constructora Jena S.A

N/A

2022-01 –

Education

Desarrollo con Inteligencia Artificial

MoureDev

N/A

2026 – 2026

Introducción al Desarrollo Backend con Node.js

UTN - Facultad Regional Córdoba

N/A

2022 – 2023

Curso Intensivo de HTML y CSS

Midulive

N/A

2022 – 2023

Desarrollo Web Full-Stack

Udemy

N/A

2023

Projects

Seba-fernandez/Greenset-Landing

Greenset-Landing is likely a landing page for a company or project related to "Greenset."

34 total commits (100% of commits) 0 total PRs
CSS 41.9% HTML 41.7% JavaScript 16.5%
34 commits/month Since Mar 2026 Last active 6 days ago

Seba-fernandez/portfoliojuansebastian

This repository likely hosts Juan Sebastian's personal portfolio website.

6 total commits (100% of commits) 1 total PRs (0% of PRs)
CSS 47.3% HTML 48.1% JavaScript 4.6%
6 commits/month Since Mar 2026 Last active 1 day ago

Seba-fernandez/api_biblioteca

A REST API for managing a library's books, authors, and related data.

5 total commits (0% of commits) 0 total PRs
JavaScript 100%
Since Jul 2023 Last active 2 years ago

Seba-fernandez/skills-introduction-to-github

This project likely introduces GitHub skills to beginners through practical examples and exercises.

5 total commits (60% of commits) 1 total PRs (100% of PRs)
2
3 commits/month Since May 2025 Last active 10 months ago

Seba-fernandez/FestivaldeMusica

Likely a website or application related to a music festival, possibly providing information and features.

3 total commits (100% of commits) 0 total PRs
CSS 29.8% HTML 17.8% SCSS 35.9%
3 commits/month Since Mar 2026 Last active 1 day ago

Seba-fernandez/BlogCafe

A blog platform focused on coffee, likely with articles and community features.

2 total commits (100% of commits) 0 total PRs
CSS 15.5% HTML 84.5%
2 commits/month Since Mar 2026 Last active 1 day ago

Seba-fernandez/API_hola_mundo

Likely a basic API example showcasing a "Hello, world!" implementation.

1 total commits (100% of commits) 0 total PRs
JavaScript 100%
1 commits/month Since Jan 2024 Last active 2 years ago

Seba-fernandez/QR_Code_Component

Likely generates or displays a QR code component, possibly with customization options.

1 total commits (100% of commits) 0 total PRs
CSS 57.4% HTML 42.6%
1 commits/month Since Jul 2025 Last active 8 months ago

Seba-fernandez/Results_Table

Likely generates and displays data in a table format using results from some process.

1 total commits (100% of commits) 0 total PRs
CSS 54% HTML 46%
1 commits/month Since Jul 2025 Last active 7 months ago