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I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!
Francisco Aguilar Meléndez
Data Scientist
+11
I love that it's personalized. When I'm stuck, I don't have to hope my Google searches come out successful. The AI mentor Cosmo knows exactly what I need.
Faith Yim
Software Engineer
+14
It's an amazing product and exceeded my expectations, helping me prepare for my job interviews. Hands-on learning requires you to actually know what you are doing.
Alex Bush
Full Stack Engineer
+9
I'm really impressed by the AI tutor Cosmo's feedback about my code. It's honestly kind of insane to me that it's so targeted and specific.
Abbey Helterbran
Tech consultant
+8
I tried Leetcode but it was too disorganized. CodeSignal covers all the topics I'm interested in and is way more structured.
Jonathan Miller
Senior Machine Learning Engineer
+12
I'm impressed by the quality and can't stop recommending it. It's also a lot of fun!
Francisco Aguilar Meléndez
Data Scientist
+11
23 practices
The course teaches how to develop a robust REST API using NestJS. By the end of the course, you will have created a ToDo App with CRUD (Create, Retrieve, Update and Delte) operations through a well-defined REST API. We'll introduce some intermediate techniques like data-specific capabilities and properly returning HTTP status codes.
n this course, we will focus on making the ToDo application more enterprise-friendly by integrating MongoDB, configuring important middleware, and handling errors properly.
In this course, we'll enhance our ToDo app's security using bcrypt for password hashing and JWT tokens for authentication. We'll also implement user-specific TODO items, ensuring each user can only access their own data. This will create a secure, personalized experience for our application.
