So, I did a list for a mate of SF authors I think everyone should read. I tried to stay away from the obvious greats (like Iain M. Banks) and very huge names but a few slipped through, of course.
Please take the time to check out these authors if you love science fiction:

Justina Robson

Greg Egan

Ann Leckie

James S.A. Corey

Cixin Liu

Arkady Martine

Tony Ballantyne

Kage Baker

Nancy Kress

Alastair Reynolds

Martha Wells

Ramez Naam

Gareth Powell

Rudy Rucker

Megan O’Keefe

John Scalzi

Mike Cobley

Elizabeth Moon

Neal Asher

Adam Roberts

Becky Chambers

Annalee Newitz

Alex Lamb

Carolyn Ives Gilman

Dave Hutchinson

Philip Palmer

Tricia Sullivan