Palo Alto Networks - Lots of openings - H1B VISA and REMOTE are possible
We do network and endpoint security. I can't sell the company better than our founder, so here's Nir Zuk:
<a href="http://youtu.be/EKdzB75aewk?t=19m19s" >
And here's an example of the kinds of things we work on (feature selection and machine learning models for malicious PDF detection, in this case):
<a href="http://www.virusbtn.com/pdf/conference_slides/2012/Xu-etal-VB2012.pdf" >
Our policy is to hire awesome people whether there's an opening or not. For the "official" list, see:
<a href="https://www.paloaltonetworks.com/company/careers/openings.html" >
We're very much an international organization, so don't let location stop you from checking us out. And feel free to get in touch with me directly -- email's in my profile.