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@MACKLEAPS-PESQUISA @Hortali @The-Midway @Kings-Foundation

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Gui25Reis/README.md

Hi, I'm Gui! Welcome to my page

I'm from São Bernardo do Campo Brazil São Paulo
Alumni at Apple Developer Academy | Mackenzie & Apple Entrepreneur Camp
See my resume PT / EN

Instagram LinkedIn Medium AppStore StackOverflow Linktree
LeetCode HackerRank Beecrowd


About me 😁

I’m a 25 year old iOS Developer with a degree in Computer Science from Universidade Presbiteriana Mackenzie. I’m passionate about building applications, solving complex problems, and continuously improving my technical skills.

Since the beginning of my journey, I’ve focused on understanding not only how to build solutions, but why they work. This approach helped me develop a strong foundation in clean code, best practices, and solid programming logic.

I have a strong focus on performance, always evaluating different strategies to deliver efficient and scalable solutions — a topic I also explored in my final thesis. I’m also experienced in documentation and development methodologies, having worked on a Technological Initiation project focused on structured documentation during my college years.


My projects 😎

I continuously study through personal projects, always seeking the most suitable best practices for each context and documenting what I learn in articles and self-made guides.

Most of my repositories include detailed READMEs, and some go further with full wikis. Much of this content was initially written in Portuguese due to the limited availability of high-quality materials in Brazilian Portuguese, but I’m currently translating everything to reach a broader audience.

These repositories serve both as a portfolio and as a way to help others who are starting in programming or are curious about the topics. Feel free to open an issue or leave a star!


My Development Stack

Languages

Frameworks

DevOps

Utilities

AI



Apps and programs (portfolio)

Hortali app logo

Hortali

Hortali is an app I'm very proud of! Its purpose is to help anyone who might face food insecurity by highlighting organic community gardens in São Paulo and sharing information about local produce, such as seasonality and vitamins.
Inkolors app logo

Inkolors

Inkolors was my first iOS app. It's a simple color theory game where you identify primary, secondary, and tertiary colors by placing them in the correct spot and understanding which combinations generate each tone.
Ball Runner app logo

Ball Runner

Ball Runner was the first app I built entirely on my own. It was inspired by a game I always loved that only existed on Android. You dodge the red balls—the longer you endure, the higher your score.
Coverless app logo

Coverless

Coverless was an accessibility study from concept to features. The app recommends books based only on the synopsis, without showing the cover, and it helped me dig deep into API integrations.
Datas em Dias app logo

Datas em Dias

This desktop application brought together everything I had learned so far: best practices, desktop UI, OOP, PyQt, documentation... Its purpose is to calculate the interval in days between two selected dates.
Kaos Bot logo

Kaos Bot

Kaos Bot was the first bot I ever worked on. My college friends and I built it during the pandemic to stir things up on Discord servers—hence the name: chaos.
The Midway app logo

The Midway

The Midway was the first idea that truly excited me: an app that finds the midpoint on a map using the addresses you enter, so you can meet your friends halfway.
Catch Fly app logo

Catch Fly

Catch Fly is a fully fledged hypercasual game. I focused on sound design and Game Center integration during development, but the main goal was to dive deep into creating a complete game design document (GDD)—the template I still use for my READMEs came from this project.
Caminholas app logo

Caminholas

My first app outside the Apple Academy, a drinking game inspired by nights out with friends. We used to play it in the Notes app, so I turned it into a real experience. Sadly, Apple doesn't allow it on the store. :/
Maria Cacau logo

Maria Cacau

One of the first pieces of software where every new version showed how much I was evolving. It's a desktop program for the Maria Cacau company that summarizes the orders for a selected period and the types of deliveries they need to plan.
Mudanca de Base app logo

Base Convertor

This was the first application I built with a graphical interface. It converts integer numbers between bases, one of the earliest topics I learned in computer science, and it was amazing to watch how far the project evolved!


Honorable Mentions

Studies

Personal repository for studying programming concepts, languages, and problem-solving across different contexts.

Practices, studies and classes from the Apple Developer Academy period.

Company Technical Challenges

Consuming a live sports API with match headlines and real-time timer updates per game.

Consuming the Marvel characters API with CoreData caching and encrypted local storage.

Consuming the Rick and Morty API, listing characters with filtering support.

Other Projects

Work timesheet utility that tracks daily hours worked, saves receipt photos, and calculates clock-out times.

Ring measurement app with a size table, conversions, and Brazilian sizing for the Império Pratas jewelry company.



My activity:

      

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  1. Kings-Study Kings-Study Public

    Studies, pocs and exercises along my career

    Swift

  2. Aulas-Academy Aulas-Academy Public

    Aulas, estudos e programas feitos durante a Academy

    Swift 2

  3. Maria-Cacau-Contagem Maria-Cacau-Contagem Public

    Programa desenvolvido para a empresa Maria Cacau

    Python

  4. Game-of-Life Game-of-Life Public

    Jogo da Vida de John Conway.

    Swift 1

  5. PontoInTime-App PontoInTime-App Public

    Um app de gerenciamento dos pontos do trabalho

    Swift

  6. Hortali/Hortali-App Hortali/Hortali-App Public

    App Hortali: um app de mapeamento de hortas em São Paulo e informações nutricionais dos alimentos

    Swift 1