What differentiates you from other similar platforms that offer tutoring (e.g. Pluralsight or codementor.io to name two random ones)?
In the case of CS courses (which is what we are focusing on for our initial launch), it's not enough for someone who wants to be a tutor to know C or Python. They must have taken the course on-campus, or a very similar one, or completed the MOOC itself. In the case where a tutor is not familiar with the material in a specific course, we gently push him/her to enroll in the MOOC's current run.
To take things a step further, one of our tutors completed the CS50 MOOC back in 2013 or 2014, when the second half of the course was taught with PHP. He said he was going to enroll in the MOOC again and do the later assignments, which now involve Python and Flask.