Being good at Math and writing open source software plus having an intense interest in ML, you might try contacting a few professors working in the field you are interested in and volunteer to write up some software in exchange for some help.
You can contact them online, but try contacting 10 or so, not just one and getting disappointed if you get a bad response.
You can contact them online, but try contacting 10 or so, not just one and getting disappointed if you get a bad response.