About Telnyx

Telnyx is an industry leader that's not just imagining the future of global connectivity—we're 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, we're shaping a new era of seamless interconnection between people, devices, and applications.

We're driven by a desire to transform and modernize what's antiquated, automate the manual, and solve real-world problems through innovative connectivity solutions. As a testament to our success, we're 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. We're currently seeking passionate individuals who are excited about the opportunity to contribute to an industry-shaping company while growing their own skills and careers.

Build the communications infrastructure that powers millions of real-time connections

At Telnyx, your code doesn't just run, it carries voices across continents, powers emergency services, and connects businesses to their customers in real-time. We're the global communications infrastructure that handles millions of calls and messages daily, and we need senior engineers who thrive on the kind of technical challenges that most companies never face.

You'll join one of our high-impact squads (Wireless or Porting) where you'll architect solutions for massive scale, own technical decisions that ripple across our entire platform, and see your work directly impact how the world communicates.

The Impact You'll Drive

As a Senior Backend Engineer, you're not just writing code—you're solving problems that affect millions of users and shaping the future of communications technology. You'll design systems that need to be fast, reliable, and scalable from day one, because downtime isn't an option when you're powering critical infrastructure.

• You'll own big technical decisions. From API design to database architecture, your expertise will guide how we scale our platform to handle exponential growth.
• You'll build across the entire stack. Debug production issues that span multiple services, collaborate with teams across the company, and see your solutions deployed to systems processing massive real-time traffic.
• You'll shape our engineering culture. Improve standards, introduce new tools, and mentor other engineers while working with some of the most talented people in distributed systems.

What You'll Work With

• Core Stack: Elixir/Erlang, PostgreSQL, microservices architecture
• Infrastructure: Docker, Kubernetes, Consul, Jenkins, Prometheus
• Data & Messaging: RabbitMQ, Kafka, Redis, Cassandra, ETS, Mnesia
• Scale: Millions of daily transactions, global distributed systems

What We're Looking For

• 6+ years of backend engineering experience with functional programming languages (Elixir/Erlang strongly preferred)
• Database expertise at scale - You understand how to design, optimize, and troubleshoot relational databases handling high-volume traffic
• Distributed systems mastery - You know microservice patterns inside and out, including when to use them and when not to
• Concurrency comfort - You've wrestled with the challenges of distributed programming and know how to build systems that stay consistent under pressure
• Production mindset - You've debugged complex issues across multiple services and know what it takes to keep systems running smoothly

Bonus Points For

• A strategic engineering approach - knowing when to move fast versus when to build for the long term
• Product curiosity - you want to understand the business impact of your technical decisions
• Knowledge sharing - you stay current with technology trends and enjoy teaching others

Why You'll Love Working Here

• Autonomy that matters. You'll have real influence over technical decisions and the freedom to solve problems your way.
• Scale that challenges. Our traffic patterns and reliability requirements will push your skills in ways most companies can't.
• Impact you can see. Your work directly affects how millions of people communicate—from startup founders closing deals to families staying connected across the globe.
• Growth without limits. Work with cutting-edge technology while solving problems that haven't been solved before. Every day brings new technical challenges that will expand your expertise.
• Culture of excellence. Join a team of senior engineers who care deeply about craft, collaboration, and building systems that stand the test of scale.