VoIP Engineer

About the Company:

Bahnhof's customers should be able to easily communicate with each other and the rest of the world via telephone, mobile, chat, online meetings, emails, and future methods that have not yet been invented. To stay on top as an Internet provider, we must provide stable and secure services, develop tomorrow's communication solutions, and be ready to deliver them when the demand arises.

Responsibilities: 

• Maintenance and development of the SIP core network. 
• Development of new telephony clusters.
  
• Identifying and fixing problems/bugs in telephony systems. 
  
• Integration with attendant systems (billing/accounting, etc.).
  

Technology:

Stack SIP: OpenSIPs, Kamailio, Freeswitch, Asterisk RTP: RTPproxy, RTPEngine. 

Database: MySQL, PostgreSQL, Redis. 

Scope of the Position:

Full-time, starting with 6 months of probationary employment.

Requirements:

• Good knowledge of signaling and media protocols: SIP, SDP, RTP/RTCP.Experience with a Linux-based server environment.
• Experience in troubleshooting SIP/RTP-related issues.
  
• Intermediate English level.
  

Will Be a Plus:

• Experience with OpenSIPs/Kamailio, Freeswitch. 
• Experience in building and managing systems within an existing SIP core environment. 
  
• Experience in programming with Python. 
  
• Knowledge of IP networking (TCP/IP stack).