well, first theres the president, who oversees EVERY department on the mountain, allocates funding to each, and makes executive decisions regarding costs, marketing, etc.
then there is directors of each department. my mom runs ski school at my mountain, and she is responsible for hiring staff, spending said funding, and making sure things run smoothly on a day-to-day basis.
underneath her is all her managers, who are a little more hands on with the employees. their responsibilities are scheduling, making sure customer needs are handled, making sure things on the snow run smoothly etc...
they seem to make a decent living though. you would most likely have the summer off and you get ridiculous discounts through pro forms. not a bad job at all.