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Synthflow AISA

Lead VOIP Engineer (FreeSWITCH & Kamailio)

Synthflow offers a no-code platform for creating AI-driven voice agents that handle human-like phone calls, vastly improving customer engagement.

Synthflow AI

Employee count: 11-50

Germany only

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Synthflow AI is a no-code platform for deploying voice AI agents that automate phone calls across contact center operations and business process outsourcing (BPO) at scale.

Requirements

  • 5+ years of experience in VOIP engineering, particularly with FreeSWITCH and Kamailio.
  • Strong expertise in SIP protocol, RTP streaming, and VoIP call flows.
  • Experience working in high-load production FreeSWITCH environments.
  • Hands-on experience with Homer SIP capture or similar SIP monitoring tools.
  • Deep understanding of NAT traversal, STUN/TURN, WebRTC, and ICE frameworks.
  • Strong knowledge of load balancing, failover strategies, and traffic optimization.
  • Proficiency in Linux administration, networking, and troubleshooting.
  • Experience with database integration (Redis, PostgreSQL, or NoSQL solutions).
  • Familiarity with WebRTC, Asterisk, OpenSIPS, or RTP Proxy is a plus.
  • Ability to write Bash/Python (or Golang) scripts for automation and monitoring.
  • Strong problem-solving skills and ability to work in highly available and scalable environments.

About the job

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Posted on

Job type

Full Time

Experience level

Mid-level
Senior

Location requirements

Hiring timezones

Germany +/- 0 hours

About Synthflow AI

Learn more about Synthflow AI and their company culture.

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Synthflow is at the forefront of revolutionizing the way businesses handle communication through AI-powered voice technology. With a mission to enhance customer interactions, their platform allows users to create, deploy, and manage AI-driven voice agents without the need for coding. Their service facilitates the automation of human-like phone calls, providing a unique solution for businesses aiming to improve lead conversion rates and customer service efficiency. Synthflow currently powers over 10 million voice calls every month across more than 30 countries, showcasing its global reach and effectiveness.

The platform is designed for flexibility and ease of use, allowing enterprises to tailor voice agents according to their specific needs. Users can select voice characteristics, languages, and integrate their systems seamlessly with over 200 different APIs. Furthermore, Synthflow prioritizes security and compliance, meeting standards such as SOC 2 and HIPAA, and ensuring the protection of sensitive data, particularly in healthcare settings. With 24/7 availability and a commitment to providing excellent support, Synthflow is well-positioned to support businesses in their digital transformation journeys.

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Synthflow AI

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Synthflow AI hiring Lead VOIP Engineer (FreeSWITCH & Kamailio) • Remote (Work from Home) | Himalayas