Don't get me wrong, I'm not saying that I think stackoverflow llc won't handle my data securely, but, it's just that, well, I'm a developer too and I've seen where credit card data ends up.
Is there an alternative means of payment for careers?
Yes, if you wish you pay for careers you can use also use paypal - however it's more of a manual process for us to activate your account, so please allow 24-48 hours after you send funds via paypal for activation.
The paypal address is: firstname.lastname@example.org
Please be sure to include your email address that is present on your careers CV.