LiveKit is building the infrastructure layer for the agentic era of computing. Our platform gives developers everything they need to build, test, deploy, scale, and observe AI agents in production. Founded in 2021, LiveKit powers voice and agentic AI applications for OpenAI, Salesforce, Spotify, Meta, and tens of thousands of other developers, collectively facilitating billions of calls each year.
About This Role
Voice has connected people for over a century — and it's entering a new era. As a Telephony Engineer at LiveKit, 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.
You'll own the engineering side of the product portions of our telephony team — including phone numbers, carrier integrations, and the surfaces where telephony meets the rest of the LiveKit cloud product. This is a role for someone who's self-starting, deeply technical, and energized by building a developer platform from the protocol layer up to the API.
You'll Thrive Here If You:
obsess over crafting code that is fast, reliable, and practical for the problem
are known as the go-to person for tackling tough technical problems
work hard and can build and ship fast
can clearly explain complex technical concepts to other engineers
are a fast learner, frequently picking up new languages and tools
The best way to impress us is with thoughtful Issues and/or PRs on our GitHub repos.
What You'll Do
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
Who You Are
A strong senior software engineer who thrives in complex, distributed systems — ideally with experience in Go, C, or C++
Deep understanding of APIs, backend architecture, and large-scale real-time systems
You think beyond code — you understand how infrastructure choices shape products, developer experience, and end-user impact
Hands-on, curious, and comfortable diving into protocols, packet captures, or production issues when needed
Collaborate well across teams, communicate clearly, and value simplicity in design and execution
Nice to Have
Prior experience on a developer platform or communications product, with appreciation for the nuances of reliability, latency, and usability
Background in SIP, RTP, or carrier-grade telephony
Experience working with global carriers on number coverage, routing, or compliance
Our Commitment to You
An opportunity to build something truly impactful to the world
Contribute to open source alongside world-class engineers
Competitive salary and equity package
Health, dental, and vision benefits
Flexible vacation policy
LiveKit is an equal opportunity employer and does not discriminate on the basis of any characteristic protected by applicable law. If you require a reasonable accommodation during the application or interview process, please contact recruiting@livekit.io.