Telephony Engineer
SeniorRemote
Description
We're expanding the team and are looking for a Telephony Engineer.
- 5 to 10 years of experience in VoIP and telephony engineering
- Deep understanding of SIP protocol including messaging, methods, response codes and SDP, as well as troubleshooting of signaling and media issues including NAT and RTP
- Knowledge of FreeSWITCH/Asterisk/ or any other b2ua including architecture, dialplan development using Lua/XML/conf, configuration of SIP profiles, gateways and modules, performance optimization
- Experience building utilities, tools, management services for VoIP infrastructure
- Experience with any kind of programming language.
- Solid understanding of networking including TCP IP, RTP RTCP and traffic analysis using tools such as tcpdump, Wireshark and sngrep
- Strong Linux administration (Debian or Ubuntu)
Nice to have
- Experience with Go language.
- Experience with Kamailio/Opensips or rtpengine
- Familiarity with CI CD, Docker, Ansible and Kubernetes
- Experience with large scale telephony systems
- Experience with ESL and Sofia knowledge
- Experience with Node.js for integration services, event socket (ESL) interaction with FreeSWITCH and REST API development
- Background in voice biometrics projects