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Senior Software Engineer, Telephony

Job in Toronto, Ontario, M5A, Canada
Listing for: LiveKit
Full Time position
Listed on 2026-01-01
Job specializations:
  • Software Development
    Software Engineer, Senior Developer
Salary/Wage Range or Industry Benchmark: 120000 CAD Yearly CAD 120000.00 YEAR
Job Description & How to Apply Below
Join to apply for the  Senior Software Engineer, Telephony  role at  Live Kit .

Base pay range: $/yr - $/yr.

Live Kit 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, Live Kit has rapidly grown to support over 3 Billion calls annually, 100,000+ developers globally, and industry giants like OpenAI, Character AI, Spotify, and Meta.

You’ll Thrive at Live Kit if:

Obsess with 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 others

Are a fast learner, frequently picking up new languages and tools

About This Role:

Voice has connected people for over a century — and it’s entering a new era. 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.

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:

You’re a strong senior software engineer who thrives in complex, distributed systems — ideally with experience in Go, C, or C++

You have a 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

You’ve ideally worked on a developer platform or communications product and appreciate the nuances of reliability, latency, and usability

You’re hands-on, curious, and comfortable diving into protocols, packet captures, or production issues when needed

You collaborate well across teams, communicate clearly, and value simplicity in design and execution

You care about building the foundation for how people — and AI — will communicate in the next decade

Our Commitments 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

Seniority level
Mid‑Senior level

Employment type

Full‑time

Job function
Engineering and Information Technology

Industries
Technology, Information and Internet

Referrals increase your chances of interviewing at Live Kit by 2x.

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Position Requirements
10+ Years work experience
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