Your best bet at this point would be https://mathacademy.com/. Their CS course will be launched between okt and dec. In the meantime I would recommend levelling up your math using the same website.
I noticed this line at the end of the article about the things you would like to build: “Education apps that leverage learning theories, community learning and game design to make learning more inspiring and accessible for students”
That’s a perfect description of mathacademy.