I'm Marcio Roberto Leal Ferreira
A passionate full-stack developer who builds for desktop, web, and mobile platforms.
- 👨💻 Senior Systems Analyst and founder of Leal Softwares
- 🎓 Computer Science Graduate by UniNorte
- 🛠️ Building applications with Delphi, Java, React, NestJS, Next.js, and more
- 👨👩👧👦 Proud father, loving husband, and happy grandfather
- 💡 Passionate about clean code, architecture and learning new technologies
- 🖥️ Desktop: Delphi (VCL/FMX), Firemonkey, DevExpress, FastReport
- 🌐 Web/Mobile: React, Next.js, NestJS, Node.js, React Native
- 🧩 Back-end: Java, Spring Boot, TypeScript, JavaScript
- 📊 Databases: Oracle, SQL Server, PostgreSQL, MySQL/MariaDB, MongoDB, FirebirdSQL
- ⚙️ ORM/Drivers: FireDAC, DataSnap, SequelizeORM, TypeORM, PrismaORM
- 🚀 APIs: REST, GraphQL, SOAP
- 🗂️ Version Control: Git, GitHub, SVN
- 🐳 Containers: Docker
- 🔁 Messaging: RabbitMQ, Kafka
- ⚙️ CI/CD: Jenkins, GitHub Actions
- 🧩 Architecture: Microservices with REST APIs
Languages & Frameworks:
Frameworks & Tools:
Styling & UI:
Here are a few repositories I've been working on:
- 🔹 Volkar Online — E-commerce Application, by Volkar Group (NestJS + ReactJS)
- 🔹 RAIO Zeus Web — Business Management Application, by Raio Rastreadores (https://raiorastreadores.com.br/) (NestJS + Next.js)
- 🔹 Easy School Manager — A complete school management SaaS with multi-tenant architecture (NestJS + Next.js)
- 🔹 Task Manager Delphi React - Simple User Task Manager Application (Delphi + Horse + ReactJS)
- 🔹 Anotar Pedido API - API for Anotar Pedido application SaaS with multi-tenant architecture (NestJS + NextJS)
- 📧 Email: marcio.sistemas@gmail.com
- 💻 GitHub
- 🌐 Portfolio
“Code is not just code — it's a tool to transform ideas into reality.” 🚀