Circle.yml in each module/project directory

Say I have a project which isn’t a strict multi-module Maven project but each folder in the parent project is a module or project of its own containing a pom.xml file.

Can I place a circle.yml (with the respect steps and settings) in each of these folders and trigger a build job when someone makes changes to the respective projects/modules in each of the folder even though they are not configured into a multi-module project at higher levels.

Basically, the folder structure I’m thinking of is just a wrapper to house multiple pom.xml projects in each of its folders and sub-folders.

Examples will be highly appreciated, any links to documentation or already answered query on this topic will also be appreciated.