Hello, I'm

João Víctor Arantes

Sr. Frontend Engineer

I create clean, usable interfaces that make the web easier for everyone

Years of experience

+0M

Impacted users

Age

Projects contributed

Years of experience

Age

+0M

Impacted users

Projects contributed

Experience

Sr. Frontend Engineer

TrustCloud

2025 - Present

Building scalable, user-friendly frontend applications for TrustCloud, a SaaS platform that automates compliance and audit readiness. My work strengthens performance and usability for companies in highly regulated industries.

ReactJavaScriptViteStyled ComponentsSaaS / B2B

Mid-Level Frontend Engineer

Mercado Libre

2024 - 2025

Contributed to Mercado Libre, the largest e-commerce and fintech ecosystem in Latin America, serving 400M+ users. Improved frontend performance and usability in a complex React/Next.js microservice environment, enhancing scalability and user experience across the platform.

ReactMicroservicesComponents LibsMicrofrontendsNext.jsExpressE-commerce

Full Stack Engineer (Jr. to Mid-Level)

HSystem

2020 - 2024

At HSystem, a leading hospitality software provider with 2,000+ hotel clients, I built and optimized booking and website tools. Key achievements include making multi-room reservations up to 10× faster, cutting website load times by 60%, and boosting system processing speed by 80%.

ReactCAngularJSMongoDBjQueryB2B / White Label

Education

Universidade Federal de Santa Catarina

Bachelor of Information Systems

2019 - 2023

Very embracing coursework, from more basic subjects like Object Oriented Programming, Data Structures, Databases, Software Engineering all the way to Operating Systems, Computer Networks, Usability Engineering, Data Mining. Final project on React Native and NodeJS with Express, and Expo for the development.

React NativeReactExpressExpoReact NativeNodeJSPython

Tech Stack

Frontend

JavaScript

TypeScript

React

Next.js

Tailwind CSS

Styled Components

React Native

Angular

Backend

Node.js

Express

.NET

Database

MongoDB

MySQL

Prisma

Tools

Git

GitHub

Bitbucket

Cursor

VS Code

Visual Studio

Jira

Postman

Insomnia

Expo

Vite

Cloud

Vercel

AWS

Azure

Buildkite

Projects

Genius

This is an AI SaaS application using OpenAI and Replicate. It is fully functional, you can go ahead, create your own account through Clerk and even signup to the Pro plan via Stripe to test everything! (don't worry, you won't be charged, Stripe is on test mode!).

GitHub Live Demo

Wild.io

This was my final college project! It fosters public engagement with city parks, encouraging the documentation of urban flora and fauna.

GitHub

Airbnb Clone

Airbnb clone I coded to showcase skills some of my full stack skills. It was also one of my first projects using Next 13.

GitHub Live Demo

Ignite Call

Ignite Call allows users to book appointments with each other. These bookings are automatically added to your linked Google Calendar! Project developed on a Rocketseat Bootcamp.

GitHub Live Demo