All those places are relatively far from the glacier in question, and considering summerskiing starts at 8 (or earlier) and ends at 1 or 2, you are basically too far away. In 2 Alpes they have the shape for liftpass deal, which i'm gonna give a try this year. Basically, if you help shape the park for a couple of hours after closing, you'll get a free liftpass for the next day. Only problem is that there seems to be a lot of people wanting to do this, so the line to get picked can be pretty long. So you might not wanna putt all your eggs in that basket. If you don't speak the languages to the extent that you can serve people in a restaurant or in a skishop, then you'll struggle getting a job. In the resorts the jobs are also almost always taken by the people that did it during the winter. 2 Alpes might be your best bet, seeing that the it has the biggest resort town of all those. On the other hand, they're french, and unlikely to be hiring many non french speaking workers.
Save up money, fight for the shape for liftpass deal, and you're good to go.