Lead VOIP Engineer (FreeSWITCH & Kamailio)

Lead VOIP Engineer to design, deploy, and optimize FreeSWITCH and Kamailio solutions.

• •Synthflow AI is an enterprise AI agent platform that unifies customer operations across voice, chat, and messaging.
• •Our agents handle routine interactions at scale so teams can focus on high-value work.
• •Over 20M hours of operations automated 60% more calls answered vs. non-AI operators 150M interactions handled, 99.99% uptime Backed by Accel, Atlantic Labs, and Singular.
• •Trusted by 1,000+ customers.
• •Recognized as one of the most promising companies in Germany.
• •Lead VOIP Engineer (FreeSWITCH & Kamailio) Location: Berlin/Remote Job Type: Full-Time Experience Level: Senior About the Role We are seeking an experienced VOIP Engineer with a strong background in FreeSWITCH and Kamailio to join our team.
• •The ideal candidate will have extensive experience in SIP-based communications, RTP streaming, and conferencing solutions, along with a deep understanding of high-load production environments.
• •You will be responsible for designing, implementing, and optimizing scalable VOIP solutions while ensuring high availability and performance.
• •Responsibilities Design, deploy, and maintain FreeSWITCH and Kamailio-based VoIP solutions.
• •Configure and troubleshoot SIP protocols, RTP streams, and media gateways.