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Telnyx is building the future of global connectivity through a private, multi-cloud IP network and hyperlocal edge technology. The company is financially stable and profitable, operating at scale with real-time communications infrastructure.
You'll join the WebRTC squad as a Senior Backend Engineer, taking ownership of backend services that power Telnyx's real-time communications and Voice SDK platform. These systems handle authentication and token management, push notifications, proxying, RTC DNS, and diagnostic logging—all critical to reliable, low-latency communication.
Key responsibilities include:
- Design, build, maintain, and operate backend services supporting WebRTC and Voice SDK products
- Own backend systems including Voice SDK proxy services, authentication services, push notification services, RTC DNS, and diagnostic logging
- Improve reliability, scalability, and maintainability of customer-facing services
- Enhance connection setup, authentication flows, routing, and service behavior for real-time workloads
- Build observability through logs, metrics, dashboards, and alerts
- Diagnose production issues across backend services, networking layers, and client connectivity
- Improve deployment processes and production readiness for distributed services
- Collaborate with mobile, JavaScript, infrastructure, and other engineering teams
- Help shape the technical direction of WebRTC backend systems
You should have strong professional experience building and operating backend systems in production, deep familiarity with distributed systems and service-oriented architectures, and experience with Elixir or Erlang (or strong backend engineering skills with willingness to ramp up in Elixir). Experience building real-time, low-latency, or connection-oriented systems is highly valued. Understanding of backend fundamentals like authentication, service communication, and session management is essential.
