Fullstack Developer

What are closures, and how have you used them in your projects?

How do you handle form validation in React? (Learn)

How do you secure APIs and sensitive data in your applications? 

What are the common performance pitfalls when working with MongoDB?

Explain how the state is managed in a large-scale React application.

How would you design a scalable real-time chat application using React, Node, and MongoDB?

How do you handle authentication and authorization in a full-stack application?

How do you handle large datasets and performance tuning in MongoDB?

You’re seeing slow queries in MongoDB – how would you debug and improve them?

Explain the React reconciliation process. (Learn)

What is the difference between synchronous and asynchronous code in Node? (Learn)

How do you handle background jobs or queues in Node.js?

1. Tell me about a challenging project you worked on and how you handled it.
2. Why are you looking to make a change?
3. How do you handle tight deadlines or high-pressure situations?
4. How do you stay updated on new technologies in your field?
5. How do you prioritize tasks when working on multiple projects?
6. What are your strengths and weaknesses as a developer?