Good Started Projects

Hi, No specific questions but just wanted to introduce myself. I posted on Github so the devs can get a closer look at it, but this might capture a wider audience. I’m not a beginning developer (years of experience in quantitative software dev) but, looking for something to work on, some more senior devs might have a better idea. Can any more senior developers recommend me a good starter issue? You can assume a pretty advanced level of mathematics, statistical computation and production softwa...