Nanny Job in Calgary, Alberta

I am a busy mom to three little ones, ages 5, 3, and 18 months. My husband and I own our own company, so there is always work to be done. I require someone who is available during the day as I often have to meet with clients. My schedule is very flexible, and we are located within walking distance to the University of Calgary. My oldest attends kindergarten nearby from 11:55 to 2:35. The ideal candidate would either have a vehicle, or a willingness to walk over to the school (its about a 10-15 minute walk). My middle child attends preschool from 12:30 to 3:30 on Monday and Friday. I am looking for approximately 20 hours per week, but could be more.