Senior Software Engineer, Telephony

LiveKit

72d

About The Position

LiveKit is revolutionizing the AI landscape by providing the essential network infrastructure that powers multimodal AI interfaces, enabling seamless audio and visual interactions. Founded in 2021, LiveKit has rapidly grown to support over 3 Billion calls annually, 100,000+ developers globally, and industry giants like OpenAI, Character AI, Spotify, and Meta. As a Telephony Engineer, you’ll help reimagine how calls, media, and intelligence flow through modern networks. From SIP and RTP to AI-driven voice experiences, your work will directly impact how businesses and customers communicate across industries worth billions.

Requirements

• Strong senior software engineer with experience in complex, distributed systems
• Experience in Go, C, or C++
• Deep understanding of APIs, backend architecture, and large-scale real-time systems
• Experience on a developer platform or communications product
• Hands-on experience with protocols, packet captures, or production issues
• Strong collaboration and communication skills

Nice To Haves

• Experience with SIP and RTP
• Familiarity with AI-driven voice experiences
• Understanding of infrastructure choices and their impact on products

Responsibilities

• Design, build, and operate telephony services that manage phone numbers, carrier integrations, and SIP trunks at scale
• Develop reliable signaling and media systems that bridge traditional telephony with WebRTC and AI pipelines
• Work closely with carriers and global vendors to expand number coverage, improve routing, and ensure regulatory compliance
• Collaborate with the SFU, Developer Success, Infrastructure and SDK teams to make voice features easily accessible to developers
• Monitor and optimize voice quality, latency, and reliability using observability and debugging tools
• Contribute to the evolution of modern, developer-friendly APIs for telephony and media control

Benefits

• Competitive salary and equity package
• Health, dental, and vision benefits
• Flexible vacation policy

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Number of Employees: 11-50 employees