Software Engineer

Summary

Join Telnyx, an industry-leading global connectivity builder, and become a Senior Backend Engineer. You will architect solutions for massive scale, own technical decisions impacting the platform, and directly influence global communication. As a senior engineer, you will design, build, and debug systems handling millions of daily transactions, ensuring speed, reliability, and scalability. You will collaborate with cross-functional teams, improve engineering standards, and mentor other engineers. Telnyx offers autonomy, challenging scale, impactful work, unlimited growth, and a culture of excellence.

Requirements

• 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

Responsibilities

• 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
• Own big technical decisions. From API design to database architecture, your expertise will guide how we scale our platform to handle exponential growth
• 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
• 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

Preferred Qualifications

• 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

Benefits

• 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