Not really; the big barrier is between tech companies and non-tech companies. Once you leave the tech world it can be harder to get back in. Again, as a sysadm

Not really; the big barrier is between tech companies and non-tech companies. Once you leave the tech world it can be harder to get back in. Again, as a sysadmin my experience is probably different from a developer's: every industry needs sysadmins, and in a lot of smaller places you'll literally be the only IT employee other than possibly a CIO.