[smoe]

I think it is always good to know what kind of skills a candidate has besides what will be his average work, but could add to the skill set of the team and might come in handy.

Be that knowledge of data structures, algorithms, ui design, ux, project management or advertisment. Especially in startups where you can't afford dedicated teams for every aspect.

If the team is already strong on the design/ux front, I might favor a candidate with better cs fundamentals. And if my team mostly consists of the latter, I might favor a "worse" programmer but one who knows and cares about typography, color harmony, paper prototyping etc.