Babysitter

I am looking to find reliable overnight care in case my son's mother has to deploy so that I may continue working while my son is in pennsylvania with me. The hours typically would be 7p to 7a (occasionally 7-3 or 11-7 depending on my work schedule). The days of work alternate between a long week and a short week. Long week is mon-tue and fri-sun nights . Short week is only wed-thur nights.