It may be a role focused on hype, but many of the people who hold these roles are developers themselves. I have no idea if Adria codes, but many evangelists are

It may be a role focused on hype, but many of the people who hold these roles are developers themselves. I have no idea if Adria codes, but many evangelists are more than just marketers. This is true of any job–you never know who is a programmer–but developer relations people more so than many.