It is better if you have attained some level of education. However, you can still get a baby sitter job in Bangalore, even if you are not educated.
What matters in a babysitter job is the quality of the language that you use while you are with the child. You should definitely not use any slangs (irrespective of your language). You should try to use polite language and courteous words such as Please, Sorry, Thanks etc. Please remember kids pick up the language spoken by their caretakers. And their parents would want you to be careful with the words that you choose.
Apart from the language, if you can teach some rhymes to the kid, it will be helpful for you to get a good job.