Korean family looking for helper!!

We are Korean and have 4 family members. 2 adults and 2 kids (both are primary school students). One of adults usually go business travel a lot so mostly helper will stay with 3 family member. Our first priority to helper is to take care of kids. We want helper to prepare meals, cleaning, marketing, laundry. Sometimes take kids out to the park, playground near flat. All conditions are negotiable! Thank you!