Personal experience: My portfolio site gets more views, engagement, comments, and interviews when it's in a sans-serif font. I've copied the same portfolio and designed it with serif fonts and it seems to be nowhere near as attractive as the sans-serif. All of the fonts were purchased from designer type foundries and are very readable and pleasing to the eye.

I much prefer the serif with warm colors for various elements. But the people I might work with strongly prefer the sans-serif with white and black and bold and bright accent colors.