What is the best practice to manage Internal Job title and External job title for Jobs

Summary:

Business wants to manage a couple of job titles (Internal and External) for a job code, the Job Name would be considered as Internal job title and it would be displayed on the employee assignment screen whereas an external job title would be used for reporting purposes and a relieving letter. It wouldn't be displayed on the employment assignment screen.

For example A job code (OPBS3.03) has a JOB Name "Senior Technical Analyst" (internal job title) and an external job title would be "Team Lead".

Content (required):

What is the best practice to store the External job title along with the Job name on the JOBS?