Pet Care Needed - Full-time / Part-time

Seeking a reliable, trustworthy dog walker 23 times a week for my 50lb Australian Shepherd, Sasha. She is very well trained, and highly intelligent and emotionally aware. Safety is my top priority. Im looking for someone experienced with medium-to-large dogs who can walk her/keep her well-exercised and cared for while Im on 12-hour shifts. I work x3 shifts/week as a travel nurse and need someone dependable and competent to walk and give her some exercise/love while Im gone.