The recruiter called me and made me take a test in C after we hung up. The test was 30 mins long. It was not difficult but definitely time consuming.

Starts with a phone call in which someone tells you about the company and then set up a date to take a technical assessment. You pick a date to take the assessment. They send you the assessment at the given time and date and you have 30 or 60 minutes to complete the assessment. If you do well on the assessment you do an onsite and speak with the CEO. He asks you a technical problem in which you must talk through. There was no white boarding.