There are three rounds in the hiring process of Headstorm. I went through 2 rounds was not selected for the third round.
First was a Phone interview asking about background and basic what you are interested in questions,
Second round was the Coder pad round which was a technical interview- can choose a language of your choice,
onsite interview which consists of 1 hour technical round, 1 hour interview regarding consultant questions, 30 minutes of behavioral questions with HR.