You can then deploy to Github or just some CDN.
I don't particularly find it appropriate to use WordPress as a tech blog. It just sends the wrong message in my opinion.
That said, I am of the opinion that developers should take pride in developing their own blog platform. It's conventional wisdom after all that building a blog platform on a modern framework only takes (a few hours | a few days | certainly not a week).
I put together mine [1], including the javascript in about 3 days. People tend to hate the background, but I wanted something a little more visually engaging and I'm not a graphic designer. :)
And for bhauers blog: love it !
Edit: I added background-color: #26282a; to .bodytext and it's much more enjoyable for me :)
In summary: WordPress has a neat dashboard, thousands of plugins, and wonderful themes. Writing and maintaining a blogging app is boring. I prefer to spend my time blogging and programming, rather than programming admin dashboards for blogging apps.
People will tell you that WordPress is slow, which is true. To remedy the situation, you should: (1) use a PHP opcode cache (I use php-apc) and (2) use a caching plugin (I use W3 Total Cache). That's about it.
I'm quite happy with my setup. It's not the fastest or the hippest, but it works great for my blogging needs. My advice would be to choose whatever makes you happy, and then stick with it.