I think full-stack simply means the company wants the flexibility to hire someone that may work on either frontend or backend as need arises. With every specifi

I think full-stack simply means the company wants the flexibility to hire someone that may work on either frontend or backend as need arises. With every specific company over the course of a few (<5) years that need will likely be just in one area (frontend or backend) as the systemic problem that creates the need is unlikely to be solved in such a short time span. In theory if you worked for them for 30 years I think there's a good chance you could be working on both backend and frontend but in practice 30 years is a long enough time that so many other things may be different to invalidate that (starting with your own skills and preferences).