Nanny Needed For My Children - Now Hiring

We are looking for a backup sitter for our 6-month-old child in Bedford. We have a regular nanny M-F, so this would be for days she is unable to cover and some weekends. We would prefer someone who could help out with light housekeeping, limited to cleaning our baby's toys and play area. We would prefer someone who has their own car, who does not smoke, who is comfortable with a cat and who is CPR certified. Since this is a backup position, the ideal candidate would be someone with flexibility that could come in on short notice.