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8 days ago
Requirements and responsibilities
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 RoleVoice 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 problemare known as the go-to person for tackling tough technical problemswork hard and can build and ship fastcan clearly explain complex technical concepts to other engineersare a fast learner, frequently picking up new languages and toolsThe best way to impress us is with thoughtful Issues and/or PRs on our GitHub repos.What You'll DoDesign, build, and operate telephony services that manage phone numbers, carrier integrations, and SIP trunks at scaleDevelop reliable signaling and media systems that bridge traditional telephony with WebRTC and AI pipelinesWork closely with carriers and global vendors to expand number coverage, improve routing, and ensure regulatory complianceCollaborate with the SFU, Developer Success, Infrastructure, and SDK teams to make voice features easily accessible to developersMonitor and optimize voice quality, latency, and reliability using observability and debugging toolsContribute to the evolution of modern, developer-friendly APIs for telephony and media controlWho You AreA 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 systemsYou think beyond code — you understand how infrastructure choices shape products, developer experience, and end-user impactHands-on, curious, and comfortable diving into protocols, packet captures, or production issues when neededCollaborate well across teams, communicate clearly, and value simplicity in design and executionNice to HavePrior experience on a developer platform or communications product, with appreciation for the nuances of reliability, latency, and usabilityBackground in SIP, RTP, or carrier-grade telephonyExperience working with global carriers on number coverage, routing, or complianceOur Commitment to YouAn opportunity to build something truly impactful to the worldContribute to open source alongside world-class engineersCompetitive salary and equity packageHealth, dental, and vision benefitsFlexible vacation policyLiveKit 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.
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