Junior System Administrator (VoIP/Telephony) / Telephony Engineer

Role & responsibilities

Junior System Administrator (VoIP/Telephony) / Telephony Engineer (Telecommunications)

No. of Positions - 1 Night Shift)

We are looking for a Junior System Administrator (VoIP) / Telephony Engineer (Telecommunications) to join our Telebu's Communications engineering Team. The Telebuin will develop, implement and support IP Telephony related technologies including and not limited to IP Telephony, IVR platforms, Conferencing solutions, Voice engineering integration, Voice over IP (VoIP), Session Border Controllers (SBC), Session Initiation Protocol (SIP), WebRTC, and Public Switched Telephone Network (PSTN) gateways.

Responsibilities:

Install & maintain Freeswtich and other SIP servers.

Administration of SIP and Media Servers, Network/Protocol level debugging and testing, Contact center solutions, Troubleshoots and resolves complex problems.

Provide IP Telephony and VoIP Subject Matter Expertise for Company and Company's managed service providers, manages 3rd party telecom carriers and providers.

Requirements:

3 years of hands-on industry experience in telecommunications

Strong conceptualize knowledge and experience with telephony protocols like SIP, SDP, RTP, SRTP and audio/video codecs.

In-depth working experience with Kamailio, Freeswitch, Any of the SIP stack (Sofia, reSIProcate, PJSIP, etc.), and Linux

Experience in using the VoIP testing tools like Wireshark, VoIPMonitor, SIPp, SIPCapture, Homer etc.

Strong understanding of implementing various network setups (Private VPNs, multi-zone secure connectivity etc)

Nice to have:

Experience with virtualization/container related technologies (Xen, VMware vSphere / ESXi, Docker, Kubernetes)

Hands on writing production quality code using any of the scripting languages like Python, Go, Erlang etc.

Working knowledge in any NoSQL databases like MongoDB, Redis, Cassandra etc.

Passionate about knowing everything about VoIP Protocol standards & related RFCs