Firstly. Well done! It takes a lot of effort to be made a portfolio site like this - both in coding, design and copywriting.
Here are my comments, compare them to other comments, decide what you think is most appropriate. Apologies if I am giving you more work after all your hard efforts. Feel free to disagree and push back, this is just my opinion after 5 minutes of looking and as someone who occasionally does hiring in their job:
Writing a portfolio site is selling, and selling means knowing your audience. Whether this is good or not depends on who you are targeting and what you are selling.
I think the current site is more aligned with selling your services to small businesses as a freelancer, and less for a full time developer role.
As someone who helps hire developers, I would want to see something more business-like. Fewer animations and background images. You can have on arty project in the portfolio, but make the site more straightforward, using a typical responsive layout like Bulma/Bootstrap etc.
I’d use a more straightforward font, as the sci-fi looking font is a bit weird looking to me.
Looking at a specific example for http://seandz.com/portfolio/asana-task-repeater - I would show just the app screenshot rather than the sales copy for it, and I think it would benefit from an animated gif or video as it seem a bit bland as a screenshot only.
Technical highlights are good, but they can go later, I’m most interested in what YOU did (not what “was done” as a team), who you did it for, what value you delivered.
“I was hired to create Asana Task Reporter as a freelancer for Asana. My role was to create the front-end using React, write unit tests and ensure a high quality bug free UI. After creating this app, they released it and had 100 users use it right away, and got feedback from 20 customers saying how much they liked the UI and that it was easy to use”.