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 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 next method in middleware function How do manage security in rest api Difference between stripe subscription and stripe one time payment How do ensure security in payment gateway How did you do billing and invoice How did you handle maps in cab booking Write a promise function How did you used redis cache What issl ttl Synchronous vs asynchronous