Q:

Where should question about design review end up on SE?

I'm currently wondering where should I ask for design review.
Some background : I'm currently doing an internship that concludes my studies, but I ended up in a company where I'm the only developer working on the software part of the company's product (basically, I started from scratch and wrote specifications, designed the software and currently develop the software).
The problem is, I want to improve, but nobody in the company can review what I do and criticize work (unless it's pretty obvious that it doesn't work), and thus I don't really know if my design/implementation choices are correct or not, if I use Qt correctly, etc.
Then, I don't really know where I could ask for advices about my design. I feel that for implementations codereview.stackexchange.com is pretty obvious, but what about design ? Should I ask for advices on codereview as well ? Or programmers.stackexchange.com would be a better fit ?
(I don't even know if it's the place to ask for that, I'll delete if not).
As suggested in the site-rec tag, questions could be : 

Is there a better architecture for this / what are the flaws of my approach ?
Is there a better way to use signals/slots in Qt than what I did ?
etc

A:

I think code review is the one to go to. 

Programmers is a place to ask conceptual questions about software
  development. 1

You will also notice code review has a [design] tag

