Restricting applicants on webform from seeing other job opening(the one they have not applied for)

Hi All,
I have created a new role applicant and have created a new doctype and web form for screening question submission which have a job opening field and user can only fill a form once logged in.
Suppose an applicant has applied to this two job

How to filter dropdown of job opening field,to only have product-management and back-end-developer as two options, since these are the jobs user has applied for.
Note: this is screening questions web form

Any Suggestion/Advice is Appreciated!
Thank You