Hi! I'm Guido Juliano

Web & Mobile Developer.
Specialized in creating high-quality web and mobile applications.

About Me

I'm Guido Juliano, a web and mobile developer passionate about creating engaging and functional digital experiences. I’m currently studying Engineering and a Technical Degree in Systems, and I enjoy continuous learning — exploring new technologies and finding ways to improve my projects.

I love working in teams, sharing ideas, and paying attention to every detail in my work.
In this space, you’ll find some of the projects that best represent me — where I combine design, code, and creativity to bring real ideas to life.

Work Experience

  1. Frontend Developer Current

    Development with React and TypeScript, using agile methodologies, and assisting with project designs and decision-making.

  2. Full Stack Developer

    I developed with Python and Django, and also assisted in creating a User CRUD system with PostgreSQL.

Tech Stack

Technologies I use regularly to design, build, and deliver web and mobile products.

  • TypeScript logo
    TypeScript
  • React
  • React Native
  • Next.js logo
    Next.js
  • Astro logo
    Astro
  • Flutter logo
    Flutter
  • Figma logo
    Figma
  • Node.js logo
    Node.js
  • Fastify logo
    Fastify
  • Python logo
    Python
  • Django logo
    Django
  • PostgreSQL logo
    PostgreSQL
  • Supabase logo
    Supabase
  • GraphQL logo
    GraphQL
  • Claude Code
  • Codex

Projects

Quix - Ecommerce

Ecommerce website built with Next.js where I implemented data fetching and data mutation with GraphQL, cookie management, middleware for route control, AI integration for a chatbot, SEO, performance analysis, and more.

Screenshot of project
  • TypeScript logo TypeScript
  • Sass logo Sass
  • Next.js logo Next.js
  • Shopify logo Shopify
  • Figma logo Figma
  • Postman logo Postman
  • GraphQL logo GraphQL

Arkanoid

Classic arcade game built with JavaScript

Screenshot of project
  • JavaScript logo JavaScript
  • CSS logo CSS
  • HTML logo HTML

Pizzeria Ubaldi

Landing page of a pizza store made with Astro with responsive design and an elegant style

Screenshot of project
  • JavaScript logo JavaScript
  • Astro logo Astro
  • HTML logo HTML
  • TailwindCSS logo TailwindCSS

Guidopalooza

Event landing page for Guidopalooza with horizontal scroll and parallax effect

Screenshot of project
  • Next.js logo Next.js
  • Motion logo Motion
  • Shadcn logo Shadcn
  • TypeScript logo TypeScript

Featured Project

Cookly

A mobile recipe app focused on speed, simple UX, and a backend ready to scale.

Problem

Users needed a practical way to save recipes, track preferences, and manage personal content in one app.

Solution

I built the app from scratch with Flutter, Supabase, and a Node.js/Fastify backend, including auth and complete CRUD flows.

Impact

Cookly became a full end-to-end product that validates architecture decisions for future mobile projects.

Cookly app screenshot
  • Flutter logo Flutter
  • Supabase logo Supabase
  • Node.js logo Node.js
  • Fastify logo Fastify
  • Firebase
  • Figma logo Figma
See repository
Guido Juliano Ubaldi Web/Mobile Developer