In this project, I developed a comprehensive blog application using the NestJS framework, combined with MongoDB and Mongoose for data management. The application is designed with a strong focus on security, integrating JSON Web Tokens (JWT) for advanced authentication and authorization. It includes full CRUD operations for managing blog posts, and a secure user authentication system that ensures only authorized users can create, update, or delete content. By leveraging the power of NestJS, I was able to build a scalable and maintainable server-side application, while Mongoose was used to effectively manage the relationships between database entities in MongoDB. This project provided me with practical experience in building secure web applications with modern technologies, resulting in a fully functional and secure blog platform.