I have a sort of messy CV (multiple studies without degree), been self-employed for the past years working on a super niché project (Energy Market Simulations) and some other small projects, and now consider applying for a junior position at a german game developer working on an RTS (I'm german myself). I put together a quick portfolio. I never applied anywhere before so could you please give me some feedback, I'm a bit at a loss - I obviously could improve the design of it but for now I'm not even sure if I should include all those small not-very polished side projects or not.
Aurelwu.github.io/portfolio.html
Be aware that on average the people interviewing you will look at your portfolio for ~60 seconds. Show off the stuff you're proud of and think is interesting.
Show your games in action: use gifs. It'll make people more likely to try the actual games. They still almost certainly won't, but that's not a strike on you, it's just that there's literally no time.
Tell us why the project is cool. "Random terrain generation in ShaderGraph!..A unique twist on Sokoban with procedural puzzle generation! An Excel add-on that visualizes energy market futures using realtime data!"
If this is used instead of a CV, I'd want to know what languages and tech are involved with each project too.
List the relevant companies for the playtesting experience. Knowing which QA operation you were in is more important than the specific game.
Finally, I'd encourage you to do a little bit more styling of the webpage. Let's get some margins to center up the content. Use complete sentences with correct grammar, but keep things as brief as possible. Let the gifs and screenshots speak for themselves when they can.