If you can write algorithms for machine learning programs, you can earn an average of US $115 per hour as a freelancer. —from IEEE The Institute

http://theinstitute.ieee.org/ieee-roundup/blogs/blog/toppaying-jobs-in-the-gig-economy-are-in-tech

http://theinstitute.ieee.org/ieee-roundup/blogs/blog/toppaying-jobs-in-the-gig-economy-are-in-tech