Pet Sitter Job in Somerville, Massachusetts

I would like to find help from a dog walker that can be available on the weekends due to my accepting a second, part-time job. My primary job is 8:30-4:30, M-F in Davis Square, near my home, so I have always been able to do walks morning/evenings with a bathroom break at lunchtime on my own, but the second job makes those evening walks harder to fit in. I always know my 2nd job's schedule at least two weeks in advance, so I could give decent notice, but I have the challenge of finding someone that can be flexible to the possibility of being needed both Saturday and Sunday. If you think my location and schedule are compatible with your services, I would love to continue this conversation!