Resolution
When jobs are arranged using folders they are accessible via Groovy Postbuild scripts as shown in the examples below.
Accessing a specific job that is located in folder_name/folder_name/folder_name.
job1 = hudson.model.Hudson.instance.getItem("folder\_name").getItem("folder\_name").getItem("folder\_name")
Searching for an item inside of a folder.
jenkins.model.Jenkins.instance.getItemByFullName("folder\_name/folder\_name/folder\_name");
The following link has more information about the methods that are available to use: https://javadoc.jenkins-ci.org/jenkins/model/Jenkins.html