Ask HN: Title for someone who takes ideas to pixel-perfect conceptual products?

I hate titling myself "Entrepreneur and designer" or "Entrepreneur, designer, front-end developer". I hate titles altogether but they're sometimes a necessity. What I do seem really basic to me. I'm exactly like a carpenter who creates a new piece of furniture from an idea. In my case it's idea -> concept -> pixel-perfect mockup. I suppose I'm not alone. Do we need a new word for this?