I first saw the add on Stackoverflow but the hiring process went on Smartrecruiters.com. i received an email to schedule an interview, during the interview i spoke about myself and got some easy technical questions they were easy the hr was wonderful and it took us about 15 minutes. In the second round it was a meeting with two senior devs it was about an hour. I have been asked some questions about the php language, git and oop. I also have been asked some math question. I messed it up in some questions so i didn't make it to the next step. Over all the process went smoothly and it was a pleasant experience, they're very professional.