Nanny Job in Halifax, Nova Scotia

I am looking for an energetic and experienced person to help me with my 19-months old twin daughters when my husband is busy or travelling. It is part-time sporadic job (times will depend on travels, etc), but help is needed mostly weekdays during the evenings (4pm-8pm) and eventually on weekends. Responsibilities include taking care of the girls, playing with them with age-appropriate games and toys, making sure they are safe, changing diapers, feeding them, getting them ready for bed, light house chores (related to the girls only). In summer time, outdoors playing may be required. Assistance with food preparation would be an asset. The possibility of babysitting for us during some evenings would also be an asset.