It is not effective to develop a generic CV and then send it out to
different job openings hoping someone will reply with an interview invitation.
Obviously it is easier to develop one resume and cover letter sending it out to different companies and applying
for different job openings.
Hired required professionals, such as, part time, full time, or on a contract basis, for
the different job opening that were available in the office.
You might change your mind and apply for
a different job opening in a few months.
You can't simply send the same resume to
each different job opening along with your application.