If you have some interesting pieces of code on your computer that you are proud of, consider opensourcing them on GitHub. I added a link to my GitHub in my LinkedIn bio and everytime I do interviews I am told that the CTO enjoyed going through my work.
Think about it: the CTO has the opportunity to see how you write code, what technologies you use, whether you write tests or documentation ... if you are going to be hired in this place, this is what you are going to do 90% of the time. If he has to compare you with other candidates, at least he knows how YOU write code.
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