What is the ruling on working as a receptionist in a nursing home that serves alcohol to its residents, knowing that the nature of the job does not involve any direct handling of the alcohol?

There is no Shar'i impediment to the aforementioned work so long as it does not involve direct assistance to what is forbidden. It is permissible to work in companies whose activity is mixed—meaning permissible with the existence of some forbidden activities—provided that the company's core activity is not forbidden, the product is not exclusively designated for a forbidden matter or primarily used for it, and the employee does not directly engage in the forbidden work himself.