Hi,
I'm fairly new to actually using freelancer. I'm bidding fairly low at the moment to build my reputation. I'm a DevOps Engineer by trade, and have worked in IT for well over 5 years. I have first hand experience with Asterisk, having worked with on-site SIP servers during my time at Centralized Showing Service. While working at CSS, I managed multiple SIP servers in 6 different call centers distributed across the continental US.
I will profess, I am by no means an expert with Asterisk - my expertise is primarily within the realm of Chef configuration management, web app deployments, build pipelines, etc. but I can deliver on this project under budget and on time.