Felipe Graeff

Software Developer

About Me

Hi! I'm Felipe, a backend-focused software developer with a strong foundation in computer science and a passion for building scalable, secure, and impactful systems. I enjoy working on open-source projects and integrating backend services with real-world applications.

My experience spans from cloud-based microservices to research-driven projects in cryptography and secure data storage. I thrive in collaborative environments and enjoy building tools that make a difference in the way people interact with technology.

I'm continuously exploring ways to align my technical skills with meaningful challenges, whether in education, infrastructure, or product development. I value clean code, thoughtful architecture, and the opportunity to learn and grow with a great team.

Interests

Distributed Systems

Designing and building scalable, service-oriented architectures for real-world applications.

Security & Cryptography

Exploring secure data storage, encryption schemes, and privacy-first API designs.

Automation & IoT

Working with microcontrollers, home automation, and hardware-software integration using tools like Arduino.

Languages & Communication

Studying natural languages and how people and systems communicate across cultures and platforms.

Collaborative Development

Contributing to shared codebases, improving tooling, and building solutions as a team.

Skills

Skill Level:

Beginner

Elementary

Intermediate

Advanced

Expert

Programming Languages

TypeScript

JavaScript

Python

C++

Java

Kotlin

Haskell

Frameworks & Libraries

NestJS

Node.js

Flask

Django

Databases & Cloud

MongoDB

PostgreSQL

MySQL

Redis

AWS

Tools & Workflow

Git

Docker

GitHub Actions

Jenkins

VS Code

Projects

MA-ABE Secure API

Cryptographic API built with Flask and Charm-Crypto

A hybrid encryption system that combines Multi-Authority Attribute-Based Encryption (MA-ABE) with AES, designed for secure storage of health-related IoT data. Includes key management with Redis, and performance evaluation with Locust.
View Project
Cryptocurrency Exchange Platform

Microservice-based exchange platform

Developed backend services for a crypto asset exchange platform, focusing on secure user authentication with AWS Cognito, transaction processing, and API Gateway integration. The platform also integrates with third-party services such as CoinPayments for transactions. Deployed using Amazon ECS.
Switch

Visual Studio Code extension to switch between source and test files

A handy VS Code extension that automatically opens your source and corresponding test files side by side, streamlining development and testing workflows. Supports customizable source and test paths and file patterns via settings.
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IoT Home Automation

Arduino-based home automation system

Developed a Wi-Fi-enabled electric switch using Arduino and ESP8266, connected to a relay module for controlling lights and appliances remotely. Includes a web interface and MQTT integration for real-time communication and monitoring.
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CThread

Basic thread library for C

A library similar to PThreads for use with the C programming language. Developed as part of the Operating Systems course, it provides basic functionality for thread creation and synchronization.
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CapyBot

A friendly capybara themed AI assistant for Slack

A Slack app integrating with the OpenAI API, allowing the team to interact with a helpful capybara-themed AI companion. Used for assistance with tasks, idea generation, or just passing the time while waiting for deployments.
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Shrek vs Battleships game

A game where Shrek must face against a fleet of battleships

A small game developed entirely in OpenGL to demonstrate core computer graphics concepts such as lighting, shaders, textures, collision detection, and Bezier curves. Created as part of a university computer graphics course.
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Mini Compiler

A compiler built with Lex and Yacc

Developed a compiler for a custom fictional language as part of the Compilers course. The project demonstrates key concepts such as lexical analysis and syntax parsing using Lex and Yacc, and includes a symbol table and error handling mechanisms.
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BITzkrieg

Battle City remake - UFRGS Game Dev Society Game Jam

A fast-paced Windows prototype inspired by Battle City (originally released for the Nintendo Family Computer in 1985). Built during a Game Jam at the UFRGS Game Dev Society, one or two players control tanks, deploy mines, and compete in strategic local matches.

View Project Source Code
Snake

The classic cellphone game, now in your terminal

A terminal-based implementation of the Snake game written in C, using the curses library for input handling and display. Designed for practicing low-level UI control and game loop mechanics.
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