It's Atwood. It's from 2003 after our last couple of fictions reached back a bit. It was shortlisted from the Man Booker Prize in 2003 and the Orange Prize for Fiction in 2004.
That really should be enough, but in case it isnt the novel is described as speculative fiction and adventure romance as it deals with things that havent been invented yet.
The novel focuses on a post-apocalyptic hermit named Snowman.
That should be more than enough to get you interested.