How to Purge a terminated Employee after certain years as per GDPR guidelines

Summary:

We would like to purge the entire data of a person who was terminated some x years earlier.

Content (please ensure you mask any confidential information):

As per GDPR guidelines, we should not be holding Employee's data after they have left the Organization few years earlier. How can we purge their data?

Version (include the version you are using, if applicable):

25A

Code Snippet (add any code snippets that support your topic, if applicable):