I'm 30 now and had a similar math education to you. Gifted track in middle/HS yet no algebra until 9th grade. No Calculus at all (although AP Calc was one of four AP classes my school offered).

I did not major in CS so I've never taken a formal Calc class. If anyone has a good recommendation for a MOOC or similar for a working professional to learn Calculus I'd love to take it. Doesn't need to be free, would probably be more motivated to do well if it wasn't :)