Crazy in this sentence means something extreme. We should hear more of the context to know if it would be extreme good or extreme bad. I can say for example: 'Every morning I have to wake up at 5.00 AM to go to this crazy job, and then I come home at 20.00 PM when I am finished'. And it means I really hate the job. I can also say: 'I do not have to do much, and I can chat with pretty girls all day. And I get free lunch too. This job is just crazy!!' And it means I really like the job. Mostly it is negative though.

The tasks you are given don't make any sense and have no purpose; the tasks are contradictory; there is no organization; there is no direction from the management; people are promoted with total disregard to their actual talent.