Modern web applications need to be scalable, secure, and maintainable. While building a Skill Exchange Platform, my goal was to create a system where users could offer skills, request learning sessions, leave reviews, and communicate efficiently while following clean software engineering principles.
The backend was built using Node.js and Express.js, with MongoDB Atlas as the database and Mongoose for object modeling. Authentication was implemented using JWT, while passwords were securely hashed with bcrypt. RESTful API principles were followed to separate business logic from routing, making the project easier to maintain and test.
On the frontend, I used React with Vite to create a responsive user interface. React Router handled client-side navigation, while Axios was used for API communication. Component-based architecture reduced code duplication and made features easier to extend.
One of the biggest engineering challenges was designing relationships between users, skills, bookings, and reviews in MongoDB. Instead of embedding every document, I used references where appropriate to reduce document growth while maintaining efficient queries. Mongoose population simplified fetching related data without sacrificing readability.
