HI,
I am comfortable coding in C.C++, Python, Java.
I currently work in Payment security . I do code reviews for code running on your payment cards and find potential vulnerabilities in them. I can say that I am very much aware of the latest security features implemented via software as well as hardware.
I would of course need to know your limitations i.e does the code has to meet either performance or space limits.
I would additionally provide you one month of support after project end.
I have a PhD in computer engineering where I have extensively worked with compiler optimisations.
Thanks,
Abhijit