Ask HN: What skills does a senior Node/React full-stack developer need to have?

I'm learning full-stack webdev, and I feel like I'm getting pretty good at it, but since I'm doing it on my own and without any industry experience, I'd really love to hear some advice/guidance on what it takes to be a senior dev, so I would know which knowledge gaps do I need to fill.

If you can share a list of skills, or point me to some awesome portfolios/resumes I can use as an example to strive for, that would be amazing.