First round: virtual online, around 40 mins, technical interview.

After 3-4 days, 2nd round: face to face technical interview, around 40 mins.

• Process.nextTick

• SetImmediate vs SetTimeout in event loop (show by example)

• Closure

• What is the event loop?

• How do you do error handling, logging, and monitoring?

• How do you handle asynchronous functions?

• What is Router in Express?

• App.get vs app.use

• What is the purpose of the next method in a middleware function?

• How do you manage security in a REST API?

• Difference between Stripe subscription and Stripe one-time payment.

• How do you ensure security in a payment gateway?

• How did you do billing and invoicing?

• How did you handle maps in a cab booking?

• Write a promise function.

• How did you use Redis cache?

• What is a TTL?

• Synchronous vs asynchronous.

Whether I know SSO or GraphQL.