Sip and Asterisk engineer

We require some one to work on a monthly retainer however exclusivity is not essential in the first month or two. We may require a full 40 hours a week though from month 3. You will need the below skill sets and perform the following duties Senior Voice Engineer: • System Administration: Creating and configuring partitions (ext3/4, swap, LVMs etc.) Deploying, configuring and maintaining MySQL databases Creating and amending databases, tables and colums via CLI Configuring cron jobs Deploying Apache services and creating aliases/URL indications as required Creating Linux HA clusters utilizing XEN server (not essential as we do have someone for this) Configuring clusters for databases, webservers, voice servers and any other linux based applications Fluent in Asterisk and SIP Linux System Administration (CentOS 5,6,7 and Debian Based OSes like Ubuntu 12.04 and 14.10) Deploying and configuring hardware consisting of the following: Servers Switchtes Firewalls SBCs Voice Appliances Routers • Voice: Configuring and deploying barebone Asterisk servers from CLI Creating automated scripts for multi-tenant deployments Configuring and deploying Elastix PBX, FreePBX and maintaining them within a cluster Creating custom solutions for customer requirements utilizing PHP and Bash scripts. Working with various different endpoint partners and technologies (SNOM, Sangoma, Yealink, Polycom, Bria, Stretto etc.) Managing termination switches through relationship with our provider • Network: Configuration of Mikotik routers, firewalls and general network related changes Deploying on-premise solutions based on customer requirements (MPLS/ Internet or VPN) Implementing necessary security on MPLS/IPSec, Internet and VPN networks All customers are corporate based, meaning that HA, Load Balancing and DR is always a part of the scope Working with Internet Solutions and Telkom (SIP and PRI technology) as well as MPLS ports and firewall configurations A summary of my role would include networks, telephony and infrastructure with scripting Please only reply if you are available and reliable. You must be well skilled and knowledgable.