In our industry traditional titles are exhausted so early so here's localized quantification [0] (on a lighter note, no disrespect to OP or anyone). I'm in KSD title range.

0: Kilo senior developor (min 10 years) mega senior developer (min 20 years) giga senior developer (min 30 years) tera senior developer (min 40 years) peta senior developer (min 50 years) exa senior developer (min 60 years) zeta senior developer (min 70 years)