It really depends on the area, in the English speaking areas, you may find work, but if you can't speak a lick of French, I bid you good luck. You have two hurdles to over come, the need to be able to speak it to do your job and the arrogance of those that will see you as a English speaking outcast.
Nonsense. I was born and raised in Montreal and may also add that I don't speak any French (at least not enough to engage in a conversation). No one has ever called me an English speaking outcast. The city has publically funded English schools as well as French ones, so why would it come as a surprise to anyone that there are a substantial many folk here that speak English instead of French. There have been English speakers here for many generations as our community is not a new one to the city, but one that's been long established.
My advice is if you speak no French and you want to move to Montreal, pick the West Island. You'll feel right at home as the English speakers outnumber the French speakers in most West Island towns.
To live in Montreal and not speak French is easy to do. But to work in the service industy is different. Sw works as a Heating and Air Conditioning/refrigeration technician. This is Sw's bread and butter. Can he afford to move to Montreal and not communicate to half the population while he learns French? This is a weighty choice.
I'm assuming SW is a dude. If you're a gal, my appologies.