Full-time (40hrs/week) Sitter For 4+ Months For A Sweet Infant

I'm looking for a full-time sitter to help with my infant (3 months in April) as I go back to work. As my baby is still young and will have more frequent naps, you're welcome to do classwork or other side work. I may ask if you could help with the kids' laundry or light housekeeping. There will be a couple of days (about 3-4 days) this summer where my 4 and 2-year-old will require care as well. Time commitment: mid-April through end of August, with potential extension for another month or two. In your response, let me know whether the time commitment stated works for you or if you may need some flexibility.