Hi,
I am an experienced software engineer with 4 years of experience in a multimedia company.
I am also a freelancer with good reputation on Upwork platform that migrate to Freelancer.
If I understand your need, you want to setup your Turn server. Well I am your developer. I worked on WebRTC on several project from compiling solution like Google WebRTC and OpenWebRTC for Raspberry to Implementing A Kurento media server solution for an American company specialized in robotics.
I am familiar with TURN/STUN servers and with open solution like Coturn project.
In addition, I am a fast developer that delivers proper work and like technical challenges.
I can give you more details about the WebRTC projects I worked on if you are interested in working with me.
Best regards
Mohamed