Hi,
I have seen your requirements. I can say that you require someone with good teaching skills and enough free time.
I have served as an assistant professor for 4 years in engineering college in india. Main subjects I was teaching were Embedded C and Linux Programming, Real Time Operating System Fundamentals, Android Development etc. So I have enough experience of teaching C as well as Linux which is your requirement.
You can also view my linkedIn profile to check my endorsements for C Language and about my experience.
I hope I am clear and if you have more queries or more requirements you can contact me on my whatsapp +919428901243