Ask HN: How to Build an Anonymous Blog?

I want to write about certain topics that I don't want employers to read - mostly about my religious journey and where that's taking me, to be specific. It's nothing controversial, just a very intimate experience that I'd like to share but not necessarily have associated with my professional persona. How would you approach that? Is the easiest way just to set up an account under a pen name on a blogging site? Any other ideas?