Hello,
I think I will be the perfect candidate for this job.
I am a Computer Science Major (6 years in the top University here in Argentina), even more I have speciliezd, and currently work, in the Machine Learning industry which involves a lot of Math, Statistics, and algorithms.
Nevertheless I believe that my strongest contribution to this job is that I absolutly love to teach its my secret passion and even more when its about the subjects I know and like the most. Last but, certainly, not least I speak native English since I lived my youth years in USA (aprox. 5 years).
I use skype and gtalk but whatever comunication system that you prefer will be fine.
I will be glad to help you on this,
Best Regards,
Ethan