Schedule background task when after every 30 seconds - react-native

I want to schedule background task that run after every 30 seconds using react-native

I have seen the following libraries

1. react-native-background-job
2. react-native-background-task
3. react-native-background-fetch

but all of them a limitation i.e I cannot set frequency to run the job less than 15 minutes.

I have also checked react-native-background-timer but it doesn't seem to work when app is terminated.

How can I achieve background task which can be scheduled after every 30 seconds