Nanny Needed For My Children

I am looking for someone to help care for my newborn once they are born (due end of Sept!) There will be a few different phases to the care but in the first month or so postpartum, I am thinking it would be good to have someone at least in the evenings, about 5 days/week. So perhaps up to 25hrs/week. After the first 4 weeks, I may be needing someone for more hours.