Elixir Engineer (WebRTC) — Remote

About Telnyx

Telnyx is an industry leader thats not just imagining the future of global connectivitywere building it. From architecting and amplifying the reach of a private global multi-cloud IP network to bringing hyperlocal edge technology right to your fingertips through intuitive APIs were shaping a new era of seamless interconnection between people devices and applications.

Were driven by a desire to transform and modernize whats antiquated automate the manual and solve real-world problems through innovative connectivity solutions. As a testament to our success were proud to stand as a financially stable and profitable company. Our robust profitability allows us not only to invest in pioneering technologies but also to foster an environment of continuous learning and growth for our team.

Our collective vision is a world where borderless connectivity fuels limitless innovation. By joining us you can be part of laying the foundations for this interconnected future. Were currently seeking passionate individuals who are excited about the opportunity to contribute to an industry-shaping company while growing their own skills and careers.

Were looking for an Elixir Engineer to join our WebRTC squad and take ownership of the backend services behind our real-time communications and Voice SDK platform.

Our SDKs are supported by a set of Elixir backend services covering authentication and token management push notification delivery connection proxying routing and diagnostic logging. These services carry customer-facing traffic and are growing fast. Were looking for a dedicated backend engineer who can own them and who brings the distributed-systems judgement the squad needs when deciding how these services should be built.

Youll be the first dedicated backend engineer on this squad. Youll work closely with our mobile and JavaScript SDK engineers and alongside Telnyxs wider Elixir community owning backend systems from design and implementation through deployment monitoring scaling and production support.

This is a systems-focused role for someone who enjoys distributed production services reliability problems and understanding how applications networks and infrastructure interact under real load.

What Youll Do

• Design build and operate Elixir services supporting our real-time communications and Voice SDK products
• Own the backend systems behind authentication and token issuance push notification delivery connection proxying routing and diagnostics
• Improve the reliability scalability and maintainability of customer-facing services under sustained load
• Strengthen connection setup authentication flows session handling and service behaviour across real-time workloads
• Build observability that makes production behaviour visible: structured logs metrics dashboards alerts and operational tooling
• Improve visibility into push notification delivery so failures to APNs and FCM are traceable rather than silent
• Diagnose production issues across application networking and client connectivity boundaries
• Improve deployment processes rollout safety and production readiness for distributed services
• Turn recurring customer and operational issues into durable engineering improvements
• Set the technical direction for these services and help raise backend practice across the squad

Youd Be A Good Fit If You Have

• Production experience with Elixir or Erlang youve shipped and operated BEAM services not just read about them. Comfort with OTP (GenServer supervision trees process design) and the Elixir ecosystem (Phoenix Ecto Telemetry)
• Experience with high-load high-throughput backend systems and the judgement to tell a sound architectural decision from a plausible-looking one
• Experience with persistent connections WebSockets Phoenix Channels or similar connection-oriented systems including session lifecycle reconnection and backpressure
• Experience building or operating authentication token or session services
• Strong experience with distributed systems and service-oriented architectures
• Experience owning services through their whole lifecycle: design deployment monitoring troubleshooting and scaling
• Experience with Kubernetes containers CI/CD and modern production infrastructure
• A strong observability mindset logging metrics dashboards alerting and root-cause analysis
• Good networking fundamentals and the ability to troubleshoot across software networking and infrastructure boundaries
• Strong communication skills and the ability to work with engineers across different parts of the stack

Nice to Have

• Experience with push notification infrastructure such as APNs or FCM
• Experience with DNS edge routing service discovery or globally distributed systems
• Experience building internal diagnostic observability or troubleshooting tools
• Experience building backend services consumed by mobile or JavaScript SDKs
• Familiarity with WebRTC VoIP or voice/video communications useful context but the backend work does not require it
• Open-source contributions to the BEAM ecosystem

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