However, I think "narcissist" is probably closer than "sociopath".
While there's a lot of overlap, a narcissist sees people as an audience rather than prey. They are more preoccupied with manipulating people into validating him (or her) as a smart, successful, powerful, rich, etc. individual.
That's really what this blogpost always keeps returning to, IMO. Even the "downer" points are flavored with "but some people believed I had potential" and "the other people were still too blind to notice my potential".
I think the shark-jumping moment is when he sent an impromptu autobiography to a prospective employer... and did it again as an audiobook "in case they didn't have time to read"! While he admits that it was a tactical mistake, he never addresses why it ever seemed like a good idea, and his next sentence basically says "I would have been an amazing employee but their hiring system is broken."