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natanzeraa/README.md

👋 Hello, I'm Natan Felipe de Oliveira

I'm a Full Stack Engineer focused on React.js and Node.js, building scalable web applications, robust APIs, and data-driven systems.

I work across the entire stack — from frontend interfaces and user experience to backend architecture, integrations, and cloud deployment.


💼 Professional Summary

  • 💻 Full Stack Developer since 2020, with strong focus on React (frontend) and Node.js (backend)
  • ⚛️ Experience building modern, responsive interfaces using React, component-driven architecture, and clean UI patterns
  • 🔧 Strong backend expertise with Node.js (TypeScript) for building scalable APIs and services
  • 🗄️ Solid experience with databases and data modeling, including high-volume processing and performance optimization
  • 🔗 Experience with system integrations and APIs, especially in enterprise and financial contexts
  • ☁️ Hands-on with cloud (AWS & OCI) and Dockerized applications
  • 🔐 Background in secure application development, covering authentication, validation, and data protection

⚛️ Frontend (React)

  • React.js — component-based architecture, hooks, state management
  • TypeScript — type-safe frontend applications
  • Modern UI development — reusable components, clean layouts
  • SPA development and API integration
  • Experience with Vite, responsive design, and UI libraries

🔧 Backend (Node.js)

  • Node.js (TypeScript) — REST APIs, services, async processing
  • Express.js — API design and routing
  • Clean Architecture & SOLID principles
  • Controllers, Services, Repositories, DTOs
  • Background with Java + Spring Boot for enterprise systems

🗄️ Databases & Data

  • PostgreSQL / MySQL — relational modeling, indexing, performance
  • MongoDB — document-based modeling
  • Oracle PL/SQL — advanced queries, procedures, high-volume processing
  • ORMs: Prisma, Sequelize, JPA/Hibernate
  • Data pipelines, ETL, and batch processing

🔗 Integrations & APIs

  • REST API design and consumption
  • External APIs (payments, financial systems, etc.)
  • Enterprise integrations (ERP, legacy systems)
  • Data transformation and normalization

🔐 Security & Best Practices

  • Authentication & Authorization (JWT, RBAC)
  • Input validation and sanitization
  • Secure API design
  • Audit logs and traceability

⚙️ Infrastructure & DevOps

  • Dockerized applications
  • CI/CD pipelines
  • Cloud: AWS & OCI
  • Environment configuration & secrets management

🧠 What I Build

I focus on building systems that combine:

  • ⚛️ Modern frontend (React) with great user experience
  • 🔧 Scalable backend APIs (Node.js)
  • 🗄️ Efficient data handling and modeling
  • 🔗 Reliable integrations with external systems
  • ☁️ Production-ready cloud architecture

🤝 Let's Connect

LinkedIn

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  1. solid solid Public

    Demonstration of the SOLID principles in practice using Java and Spring Boot.

    Java

  2. picpay-desafio-backend picpay-desafio-backend Public

    Forked from PicPay/picpay-desafio-backend

    Desafio técnico - Backend

    Java

  3. consulta-em-massa-cnpj-sintegra consulta-em-massa-cnpj-sintegra Public

    Sistema de carga e processamento em lote de CNPJs com integração à ReceitaWS e Sintegra, desenvolvido em Oracle PL/SQL e Oracle APEX.

  4. google-2FA-api google-2FA-api Public

    API para gerenciar processo de autenticação de 2 fatores com o app Google Authenticator, desenvolvida em Node.js com Express e MongoDB. Esta API está sendo consumida em outro repositório em um app …

    JavaScript 1