Senior VoIP / SIP Developer

📋 Description

• Design, develop, and maintain intelligent call-routing solutions for production SIP/VoIP
• Integrate multiple telecom operators and optimize call routes according to cost, quality
• Implement and maintain SIP routing, prefix-based routing, failover mechanisms, and related
• Develop backend services and integrations using Python and/or Node.js/TypeScript.
• Work with Kamailio or OpenSIPS to build and maintain robust SIP infrastructure.
• Manage and optimize PostgreSQL databases supporting routing and telephony workflows.

🎯 Requirements

• Proven professional experience working with SIP/VoIP in production environments.
• Strong hands-on experience with Kamailio or OpenSIPS.
• Solid understanding of SIP, VoIP, call routing, prefix-based routing, and failover mechanisms.
• Professional backend development experience with Python and/or Node.js/TypeScript.
• Strong working knowledge of PostgreSQL.
• Experience with Linux, Docker, and cloud infrastructure.

🎁 Benefits

• 100% remote work arrangement.
• Full-time employment.
• Opportunity to work on an international technology project with real-world production telephony
• High level of technical ownership and autonomy.
• Exposure to advanced SIP/VoIP routing, carrier integrations, failover, and intelligent call-routing
• Opportunity to work across backend development, cloud infrastructure, Linux, Docker, and