Mother's Helper/Assistant Nanny needed for 2 children, 1 and 3 years, starting in August

We're looking for a nanny/mother's helper to help with our two children, aged 1 and 3. Their Grandmother is currently watching them 3 days/week, but she would like additional help during the day. We are looking for someone to help her with day to day activities and to watch the 1 year old at home while she takes the 3 year old to story time, etc. The start date is as soon as possible, but we can be flexible. Your main responsibilities include engaging in playtime, helping prepare meals, and helping with daily routines in a supporting role with their grandmother. One day per week would be assisting Mom with children so I can get housework done. The position is needed 3-4 days per week. We want someone who is reliable and engaged with our kids.