Completely appalling experience, do not recommend it at all!

Coding Challenge -> Recruiter Phone Call -> Video Interview

Did a HackerRank with 2 questions:

• Knight's Tour Problem
• Implement a Stack with Increment Option.

Next step was a 15-minute phone interview with the recruiter, motivational and behavioral.

They advanced me to the next one, a 45-minute video interview. In the email, they said we would go through my CV and the HackerRank I completed. To my surprise, when the time for the actual interview came, they only asked hard theoretical true/false + reason questions, which I wasn't prepared for.

I told the interviewers what happened. They didn't even take responsibility for this and simply said, "There must have been some miscommunication."

Also, the interviewer was bragging about his previous startup and had an "I don't want to be here - you seem dumb and are wasting my time" attitude during the interview.

Lots of red flags about the company here: miscommunication between departments, people not taking responsibility for mistakes, arrogant employees, etc.

Are multi-threaded algorithms always better than single-threaded?