i will be arriving mid feb and departing late may if its a good season
The ski season ends in April if it's a high altitude resort. And that's a good season.
also can you get quaterly season passes?
Most resorts sell passes by number of days, perhaps up to 30 days. Then you might get a month pass. After that only a season pass.
is it difficult to get work if you dont speak Austrian ?
To emphasize the point, German is spoken in Austria (time for some basic research on your part?). Not speaking German limits the jobs open to you, but possible. The bigger problem is time of year. Most people are looking in Oct-Nov and take up most of the possibilities for the season. And many have already reserved their job by working the previous season. What's left is the odd vacancy here and there which is impossible to predict or make plans around.