Walker Needed For 1 Dog In Boston

I need a walker to take care of 1 dog in Boston (Ink Block). Please see below for responsibilities, schedule and more. Playing and exercising are a must. Walking my pet 2 times a day for 20 minutes is required. Boarding is required as needed. Non-smoker. I'd like someone who can keep my dog during the day some days to give him more walking and socialization time. This would likely require picking up my dog and dropping him off at my place in the evening. I work late sometimes. It would be a split schedule with somedays only requiring two walks and other days he would be picked up and dropped off at my place.