Become a Backend Developer

Build a Node.js command-line tool that reads and writes a JSON file of foodstuff prices across Lagos markets using the fs module (sync and async), organised into custom modules and managed with npm.

Using only the built-in http module, build a server for a hypothetical interstate bus company with routes for terminals, routes and fares (₦), query-parameter filtering, an HTML template page and a proper 404.

Build an event-driven order processor for a hypothetical Jumia-style store using EventEmitter, and stream a 100MB+ sales CSV to compute totals per state while handling backpressure. Document how the event loop and thread pool are involved.

Initialise an Express project for a hypothetical Abuja clinic, connect to MongoDB Atlas with Mongoose, configure environment variables and Nodemon scripts, and design Patient, Doctor and Appointment models.

Implement POST, GET, PATCH and DELETE endpoints for appointments with validation, catchAsync wrappers, a global error handler, filtering and pagination. Provide a Postman collection covering every endpoint.

Add signup and login with hashed passwords and JWT, protect private routes, and enforce roles (patient, receptionist, doctor, admin) so each role can only perform its permitted operations.

Implement forgot/reset password with hashed, expiring tokens and send emails via Nodemailer (tested with Mailtrap). Add rate limiting, security headers and input sanitisation.

Design, build and deploy a complete API for a hypothetical Nigerian business (e.g. a Lagos logistics company or school fees portal) with auth, RBAC, CRUD, email and full documentation. Deploy on Render or Railway.