Hello!
My name's Paul. I'm a freelance Web & Graphic Designer, and overall Programmer.
While I'm capable of using WordPress, I'm like you and prefer not to..
All the websites that I've built or otherwise sold, were built from the ground up and just about all have had a custom back end built to go with it as well.
Responsiveness is not a problem. Bootstrap should cover that. Or if you feel the site doesn't need much alteration between devices, just zoom/sizing, you could most likely get away with just CSS and HTML (PHP for behind the scenes, but that's besides the point).
So, if you'd like, you may view my portfolio website (simply search my name on Google: Paul Rovneyko (Freelancer has issues with URL's..)).
And if you have any questions or would like to get started, just reach out to me!
I'll be looking forward to your response.
Paul