Like others have said, you get an invitation e-mail with a list of tasks to complete, ranging from a quick 5 minute screening check to a 4 1/2 hour "job test" and then apparently a 30 minute interview at the end. However good luck getting that far, because at the first hurdle, you also have 50 questions to answer within 15 minutes, a range of maths and puzzle type questions (the type you might get for a Mensa test). Was actually quite enjoying the test, but the time goes like that, so was only able to answer about half. Clearly this wasn't enough so you get an automated rejection letter. So the impression they are giving is that this company wants you to work as quickly as possible, with no attention to detail, and just get questionable quality work done asap. No thanks. It's a shame, because I quite liked the idea of an online test, however the time restraint is ridiculous.