The first round was a screening call to make sure that your work experience matches that of the job. The second round is meeting with the PPC manager, where he assesses your skills and abilities. The last round is an assessment to build out a campaign for a client, followed by a meeting with the cofounders where you present your assessment to them. Be prepared to get lied to when asking if there were any outstanding concerns or any experience they felt you were lacking to move forward. They provided 0 feedback to the question, which gives you a false sense of hope that you are a good fit for the company. You feel like you waste your time interviewing here.