The Canadian CS community is seriously under-server and under-organized. The ACM (in the US) completely overshadows us, and since it (nominally anyways) tries to be international, that leaves little room for Canadians to get organized. So typical community-driven issues, like aggregating jobs, does not happen. The community is (now) large enough to be able to sustain such an organization (I know, I belong to the CMS, the Canadian Mathematical Society, and it manages just fine, and the sizes involved are in the same ballpark).
I realize that this answer is a bit of a non-answer. But the (unfortunate!) answer to your question is 'no'. So rather than just saying that, I figured I would elaborate.
Ok, so apparently my Google-fu was not good enough. I just stumbled upon the
CACS/AIC, which is the
Canadian Association of Computer Science. But the web site is astonishingly bare bones, with no real sign of the purpose, etc. So still a 'no', but not quite exactly as I had said. And
CIPS is different, as it really focused on the IT side of things, not so much on the CS.