The word itself implies more experience than others. More experience is usually correlated to length of your tenure. But yes I agree, other qualities of senior

The word itself implies more experience than others. More experience is usually correlated to length of your tenure. But yes I agree, other qualities of senior developers include what you wrote. Just being a devils advocate here: I was 14 leading the school programming club and I thought I solved really difficult issue setting up gentoo. Senior at 14?