Alex Finiks

It is practically one of the best snarry out there.
A LONG road to love with brilliantly sculptured characters and a plot with many twists.
Very realistic both in situations and in dealing with them, plus realistic yet beautiful smut.
Has chaps from Severus' perpective in 3rd person.
Beautiful language.
Emotions are spectacular.
Canon-compliant.

P.S. the series are not finished, yet the new story hasn't surfaced since 2014.