[vidarh]

Exactly. In most small companies, the above roles often is the tech lead role. In larger companies, it's quite common to find it broken up - separate architects, different levels of engineers where the higher levels are expected to help guide newcomers or juniors; people to interface with other teams etc. If they then have "tech leads" it usually tend to mean someone who plays some of the above roles within a larger team that may have separate people for some of the functions at a higher level.

And you're right - a lot of people don't want the above responsibilities. I've had teams where despite our best intentions in hiring from within when possible, all the engineers wanted to remain in pure engineering roles, so we had to go out and hire people to fill those roles as the team grew and I couldn't take on all of them myself any more.