Evening babysitter for 20 months old

We are looking for a babysitter available from the 19th of August in the evenings (1-4 times per week) from Monday till Thursday from 17.45 till 19-20 to take care of a 20 months kid and in case of sickness also during the day. On rare occasions also during the weekend. Job consists in picking him up from Kita, bring him home (5-10 minutes walk), play with him, prepare and/or give him dinner, change/bath him to be ready to go to bed and in rare occasions put him to sleep. We are looking for someone we can agree on the working schedule on a week by week basis depending on our work schedules.