VoIP System Engineer

We are looking for a full-time, or part-time VoIP System Engineer for our international team, home-based role with flexible working hours. We anticipate up to 40 hours a week, but we can work part-time with the right candidate.
You will be managing the Voice and Video over IP Servers hosted in the Cloud services in Europe and the US. Our mobile apps will register as a SIP endpoint and make SIP calls to specific businesses through SIP trunks. You will be managing the dial plan, production servers, NAT Traversal, ICE servers, troubleshoot potential issues reported.

Our working hours are flexible; usually in European and US timezones so it will be 11-13:00 start and 19-21:00 finish for Turkey.

Good Things About This Job:
International firm, flexible working hours, home-based, competitive pay

Challenges About This Job:
To be able to work in different timezones. Managing the global environment 24/7, potential on-call (paid) support over the weekend.

Must have;

• Asterisk Open Source PBX Experience, dial plan, call distribution, redundancy
• Extensive knowledge about SIP Stack, SIP Troubleshooting, NAT Traversal, STUN, ICE
• Knowledge about Dial Plans, VoIP, Video over IP codecs
• Basic Linux Server Administration
• PJSIP Experience; creating endpoints and SIP trunks using PJSIP stack in Asterisk via pjsip.conf
• Experience in minimum Asterisk 13 or higher
• SIP Session Border Controller Concept
• Fluent written and reading English to understand the technical documentation and search on Google

Nice to have;

• Kamalio SIP Server experience
• OpenSIPS Server experience
• Asterisk IVR, queuing, call center applications
• WebRTC concept in general and implementations in Asterisk
• Cisco CUCM Experience
• Fluent spoken English for technical support if needed
• Experience in SIP VoIP gateways such as Audiocodes or similar.