José Carlos Dos Santos Oliveira Junior
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José Carlos Dos Santos Oliveira Junior

José Carlos Dos Santos Oliveira Junior

About

Detail

Software Engineering | Developer Back-End | JavaScript | Node.js | Express | MongoDB | AWS | APIs REST
Brazil

Contact José regarding: 

work
Full-time jobs
Starting at COP7M/month ~USD1.7K/month
Flexible work
Starting at USD20/hour
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Internships
Starting at USD450/month
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Finding candidates
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Finding mentors
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Timeline

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Résumé

Jobs verified_user 0% verified
  • Freelance Latin America
    Back-end developer public Remote experience
    Freelance Latin America
    Jan 2024 - May 2025 (1 year 5 months)
    Designed and implemented scalable and modular RESTful APIs using Node.js and Express, with a strong focus on clean code, separation of concerns, and future-proof structure. Integrated MongoDB with Mongoose schemas and secured endpoints using JWT-based authentication and bcrypt password hashing. Currently applying TypeScript to ensure type safety and reliability in backend development, progressively migrating projects from JavaScript to TypeScript. Used Git/GitHub for version control and deployed applications using platforms like Render and MongoDB Atlas. Focused on performance, maintainability, and readiness for future feature expansion. Additionally, I have developed scalable RESTful APIs by organizing the codebase with controllers, servic
Education verified_user 0% verified
  • U
    Bachelor's Degree
    Uniasselvi
    Jan 2025 - Current (6 months)
  • S
    Introduction to Programming with Python
    Santander Coders
    Oct 2024 - Nov 2024 (2 months)
  • G
    Cybersecurity Professional Certificate
    Google (coursera)
    Aug 2024 - Nov 2024 (4 months)
Projects verified_user 0% verified
  • Freelance Latin America
    User Registration and Authentication API
    Freelance Latin America
    Mar 2025 - Apr 2025 (2 months)
    Built a secure user authentication API using Node.js, Express, and MongoDB. Implemented JWT for token-based access control and bcrypt for password hashing. Designed Mongoose schemas for user data modeling and performed route protection with middleware. Used Postman for testing endpoints and GitHub for version control. The project is deployed using MongoDB Atlas.
  • Freelance Latin America
    Vehicle Registration System
    Freelance Latin America
    Jan 2024 - May 2025 (1 year 5 months)
    Designed and implemented a RESTful API for registering, listing, and deleting vehicles using Node.js and Express. Applied authentication with JWT, password encryption with bcrypt, and MongoDB for persistent storage via Mongoose schemas. Included version control with GitHub and tested endpoints with Postman. Deployed to AWS and MongoDB Atlas. Additionally, I began transitioning my backend development from JavaScript to TypeScript to enhance the application's structure and type safety. By utilizing TypeScript, I defined request and response interfaces, improved error handling, and created a more maintainable codebase, which significantly reduced runtime bugs and increased code reliability, particularly in conjunction with MongoDB and Express