I am in Germany for work and I am renting a car. Today I was flashed
by a speeding camera this is unfortunately the second time.  I do plan
on paying the fine, but does this go on my california drivers
license??  I have no other driving license i.e. international, or
German.

Dear bad_samaritan,

Don't worry that traffic misdemeanours in Germany might affect your
California driver's record. I am German, and I can assure you that
there is no such danger.

The German road traffic regulations apply to Germany only. Thus,
ordinary violation of those rules will result in consequences limited
to your stays in Germany. There will be a record of your misdemeanour
in the German central traffic register, but it will not be shared with
Californian authorities, and it will be deleted after two years,
provided that you avoid additional violations in Germany in the
meantime.

It is, of course, advisable to pay any fines involved. Otherwise the
legal consequences would be much harder should you return to Germany
at a later point.

Best regards,
Scriptor

And  - being flashed does not always result in a ticket:  if your
excess speed was within the ca. 10% leeway allowed because your
speedometer might have incorrectly been showing you that you were
within the speed limit;  and, because sometimes the film has been used
up.
If you are caught exceeding the speed limit by more than 20 km/h, it
gets expensive.

But watch out for running red lights!  If you are more than a second
after the light turns red, and are caught, you lose your license for
one month.