Lots of great suggestions here, including JOAT doing better at small or startup companies. One other thought I'd like to add is, if what you actually dislike about your current situation is the isolation, then you should start a group for JOAT's, and set up a forum or other method in which such people can lean on each other's experience and skills. I see from the responses to this question that there are a lot of people in your situation, and it may be that what is needed is a professional organization tailored to their type of role. This would fix the issues of brainstorming, someone to ask for advice on a tech decision, sharing war stories, etc.
On the other hand, if you're really just looking for a different employer, then either find a similar position at a different small company, or go DevOps, because that is the one right now where the need is so desperate that they will hire someone with mixed experience instead of insisting on a specialist. But, beware, people who fell naturally into being a JOAT, often don't like becoming specialists after a year or so.
On the other hand, if you're really just looking for a different employer, then either find a similar position at a different small company, or go DevOps, because that is the one right now where the need is so desperate that they will hire someone with mixed experience instead of insisting on a specialist. But, beware, people who fell naturally into being a JOAT, often don't like becoming specialists after a year or so.