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Senior Voice Engineer

Location: Remote
Compensation: To Be Discussed
Reviewed: Wed, Oct 07, 2026
This job expires in: 30 days

Job Summary

To develop programmable voice capabilities and API-driven communications infrastructure, the full-time Senior Voice Engineer will design and build voice platforms using technologies such as FreeSWITCH, Kamailio, and Java while working remotely.

Key responsibilities
  • Design and develop programmable voice services, APIs, and call-control capabilities for enterprise-scale communications platforms
  • Build and extend voice infrastructure using FreeSWITCH, Kamailio, SIP, RTP, and WebRTC
  • Implement call routing, session management, media handling, and voice traffic processing solutions
Required qualifications
  • 8+ years of software engineering experience with significant ownership of architecture and technical delivery for distributed applications
  • Deep expertise with FreeSWITCH and/or Kamailio, including call control and media services
  • Experience building API-driven communication platforms or CPaaS-style solutions
  • Expert-level experience with Java, Spring Boot, microservices, and REST APIs
  • Strong understanding of voice infrastructure, real-time communications, and telephony troubleshooting

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