You do require an MCC and a Frozen ATP in order to get contacted/shortlisted by Qatar Airways.
I'm afraid this is not very accurate
bond737!
You must hold at least frozen ATPL to get invited to the assessment. but not necessarily an MCC.
I've met many who have been invited to the assessment before they've done their MCC. However,
the MCC is still a main requirement before joining. Also it would be for your own benefit guys if you have the MCC beforehand as it will enrich your knowledge and CRM during both the interview and the sim ride! Some interview questions are really based on your CRM knowledge and experience.
All the best