I have been a Hadoop Cluster Admin for the past 5 years, Mainly managing our multiple Cloudera Enterprise Cluster. I have been a Linux/Unix Administrator for more than 5 years that handles OS types such as Redhat, Centos and Ubuntu.
Onlinejobs.ph "ID Proof" indicates if "they are who they say they are".
It DOES NOT indicate skill level.
ID Proof scores are 0 - 99 with 99 being the best. It is calculated based on dozens of data points.
It's intended to help employers know who they're talking to is real, and not a fake identity.