Babysitter Needed For 1 Child In Brooklyn

I'm looking for a great babysitter for a 7-year-old child. On Tuesdays & Thursdays, he would need to be picked up from school at 2:20 p.m. (right up the block), brought home to do his homework. Then taken to his karate class for 5:45 p.m. to 6:15. The karate class is a 15 minute bus ride away. Saturdays would only be once a month for about 4 hours, from morning to early afternoon. Some light tidying up (if necessary) would be part of our caregiver's responsibilities. I have cat, so please consider that when applying. You should be willing to help with his homework.