We do have a handful of remote engineers and QA folks - typically, they're employees who started on-site and then moved elsewhere, and they do visit the office fairly regularly (with frequency depending on distance) - but it is something the company is open to, though I think we prefer to hire people who can work on-site. Also, anecdotal evidence, as I don't know much about our hiring policies, I think one of my teammates is on an H1B and our legal dept has helped him navigate that.