Sounds pretty normal for someone from the Cali/SV/SF ego bubble.. and these types are flocking to Berlin now? Gonna have to shorten my annual Berlin summer break from 3 months to 1 then :D

Yeah, the author seems to be really full of himself. More than the half of the article is about him and how awesome he is.

All in all, I also even find the article to be very condecending.

The author is writing about what experiences and goals motivated him to move to Berlin, and what he's doing here now. It's a personal article, of course it will have the author at its focus.

Actually, he doesn't even write that much about it. Apparently his decision to go to Berlin was made after asking 'his well-traveled friends' what they would suggest.

The rest his him praising himself...

You could say that about any article about one's own experiences. This one is different.

To be fair it's the guy behind Heroku which probably was the first company to really democratize the concept of PaaS and in addition to Engine Yard they were of big help in making ruby/rails more popular.

His statement is not wrong and I applaud his unbroken enthusiasm.

There are a large number of people in history with even greater achievements than heroku who have not succumbed to these extreme levels of narcissism.

This doesn't sound like "narcissistic" at all. Simply a statement. Maybe you're reading it with imposed self-belief which is causing a negative feeling? (Mumbo jumbo for - don't be jealous. It's not overstating at all)