There is a custom profile property such as EmployeeID defined. With
the EmployeeID value known, how can I get the corresponding
userprofile object? I am using the brutal force of looping all the
profiles to check for a match such as
profile["EmployeeID"].value.tostring() == xyz. This is not efficient
of course.

There must be better ways doing this.

Any suggestions or code snippet will be greatly appreciated.