looking for a test/QA and VOIP expert (WEBRTC/VOIP/SIP)

I am looking for a test/QA and VOIP expert (WEBRTC/VOIP/SIP)
Mission objective:
Load Testing:
Endurance test :

Test environment:
The tests must be performed on a chatroulette server on a Contabo VPS

Functional objective:
Check how many pairs (two interlocutors in communication) can be in communication during the same session – Check the limits of the backend . Simulate Android and IOS phones (from 1000 to 5000 users)

Profile required
– Expert in VOIP SIP WEBRTC
– Expert in load and performance testing