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I'm Aureo Alexandre, I'm 24 years old and I have 6 years of experience in technology. I hold a degree in Systems Analysis and Development and a postgraduate degree in Software Architecture.
I work as a solution developer and software engineer, implementing code improvements focused on best practices and concepts such as clean architecture, design patterns, and domain-driven design.
As a full-stack developer, I apply UI/UX principles on the front-end and business-oriented architectures on the back-end, ensuring scalable solutions aligned with project goals.
My goal is to become a reference in software engineering and architecture.
I specialize in modernizing frontend applications, migrating legacy projects from Create React App to Vite and Next.js, optimizing performance for each scenario. I've migrated React projects from versions 12 and 14 using class components to functional components with TypeScript, hooks and modern practices. I've applied significant performance improvements with Redux Toolkit and TanStack Query, defining SSR and CSR strategies based on each application's needs. I also implement secure authentication via HttpOnly cookies between frontend and API, optimized Dockerfiles and build process improvements.
I develop robust systems using single-responsibility microservices, applying Clean Architecture and Hexagonal Architecture to ensure maintainability and scalability. I optimize Docker builds and images, reducing size from 800MB–1.5GB to approximately 400MB. I improve database performance and implement Redis when needed for caching and sessions. Inter-service communication is handled efficiently via HTTP and events (RabbitMQ, SQS). I also modernize legacy projects, updating the entire ecosystem to current best practices, including JWT authentication and continuous integration.
I manage the full application lifecycle with Docker and Docker Compose, versioning with Git and GitHub, deployment on Vercel and CI/CD pipelines. I apply monitoring and observability practices, including database performance tracking to ensure system health and availability in production.
I use Artificial Intelligence in software development in a structured and professional manner. I create corporate AI agents using RAG, guardrails and harness, integrated via API to meet specific business needs. For each new feature, bug or planning task, I write SDDs (Solution Design Documents) that guide the AI in implementation, ensuring consistency and quality. I also work on creating and evolving internal AI agents, following best practices in prompt engineering and multi-agent system architecture.
Full Pokédex SPA with smart caching and filters
Full Pokédex SPA powered by PokeAPI with TanStack Query for smart caching. Features search, filters by type/height/generation, shiny toggle, pagination, detail modal with stats, and dedicated pages for berries, items and locations. Lazy-loaded routes with React Router v7.
GraphQL API with Clean Architecture in .NET
Full GraphQL API for a superhero universe with Clean Architecture in .NET 10. CRUD for heroes, villains, teams, powers and movies. Combat simulation comparing power levels. Built with HotChocolate 15, EF Core 10, PostgreSQL and Docker.
AI-powered animal adoption management SPA
AI-powered adoption management SPA with Google Gemini 2.5 Flash. Generates descriptions, extracts data from text, semantic search, behavior classification and auto-tagging. Full CRUD with React 19, Vite 8, styled-components and TanStack Store.
Screen and camera recorder with live preview
Browser-based screen + camera recorder with live picture-in-picture preview, audio mixing via Web Audio API and canvas compositing. SSR with React Router 7 and Tailwind CSS 4. Pause/resume, switch screen mid-recording and real-time stats.
E-commerce SPA with Context API and Redux
E-commerce SPA consuming the Fake Store API with TanStack Query. Cart managed via Context API, categories with Redux Toolkit, product listing, detail and category filter pages. React Router v6 and styled-components.
Manifest V3 extension with productivity tools
Manifest V3 extension with three productivity tools: Read Later with scheduled reminders, Site Notes per domain, and Page Extractor (Markdown/JSON). Clean layered architecture with dependency injection, strict TypeScript and Repository pattern.
Multi-step form with validation and state management
Multi-step developer registration form with protected navigation, validation per step (name, level, email/github) and centralized state via Context + useReducer. Visual progress sidebar, Docker + Nginx for production.
Task manager with Kanban and drag-and-drop
Task manager with two views: column-based list and Kanban board with native drag-and-drop. Full column management (add/rename/delete), card operations (add/edit/delete/reorder), localStorage persistence. React 19, TypeScript 6, Vite 8.
Minimalist Redux Toolkit reference project
Minimalist counter as a reference React + Redux Toolkit + TypeScript + styled-components project. Demonstrates typed store with configureStore, centralized theme with design tokens and dark mode. Migrated from CRA to Vite.
Full-stack user management system
Modern system to create, view, edit and delete users focused on UX, security, scalability and design system. Modernized after 3 years, migrating from React Scripts to Vite with TypeScript, scalable architecture and updated dependencies.
Christmas-themed landing page with glassmorphism
Christmas-themed landing page built with Next.js 16, TypeScript and Styled Components. Premium design with fluid CSS animations, glassmorphism, sophisticated gradients and full responsiveness. Interactive components and centralized theme system.