On websites that optimize for readability (like news websites) you see at least 18px and upwards. They also don't force the text into a micro-column forcing you to scroll for pages to read a few sentences. I also think the color / background isn't helping with readability. Black text contrasts terribly with a white background and makes it feel like you're staring at a light bulb. Imagine if PDF readers used the same style for rendering. People would probably go blind before finishing one book.
I think hiring managers will be sitting through a lot of CVs on this site and they would probably appreciate it far more if you optimized for readability over appearance.