Senior Software Engineer (Remote)

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.

The Role

Telnyx builds the communications infrastructure that powers the AI era — real-time voice, messaging, wireless, and networking delivered through APIs and a global private backbone. Our engineering teams operate across specialized squads, each owning a critical piece of the platform.

We're looking for a Senior Software Engineer who thrives on variety and impact. Instead of anchoring to a single squad, you'll rotate across teams — stepping into high-priority projects, accelerating stalled initiatives, and shipping features that cut across the platform. One quarter you might be optimizing our real-time messaging pipeline. The next, building infrastructure for a new product launch. The common thread: you solve hard problems fast and leave the codebase better than you found it.

This is a role for someone who gets restless doing the same thing for too long — and who has the technical depth to contribute meaningfully wherever they land.

In This Role You Will

• Rotate across engineering squads to tackle high-impact projects — no two quarters look the same
• Ship production code in multiple languages and stacks (Elixir, Python, Java, Go — we use them all)
• Design and implement features end-to-end: API design, business logic, data layer, deployment
• Debug and optimize distributed systems processing thousands of messages per second with five-nines uptime requirements
• Mentor engineers across teams — share patterns, raise the bar on code quality, and help unblock teammates
• Work directly with product and engineering leadership to identify where you're needed most
• Push code to production multiple times a day in a CI/CD environment

What We're Looking For

• 5+ years of professional software engineering experience
• Strong proficiency in at least two of: Elixir, Python, Java, Go, or Scala
• Experience building and operating distributed systems at scale — you understand the trade-offs and have lived through the failure modes
• Comfortable with multi-cloud Kubernetes deployments, containerization, and CI/CD pipelines
• Solid database experience — relational and NoSQL (PostgreSQL, Cassandra, ClickHouse, Redis, or similar)
• Ability to ramp quickly on unfamiliar codebases and ship meaningful work within days, not weeks
• Strong communication skills — you'll work across teams and need to context-switch effectively
• Experience with AI tooling for development productivity, or a strong willingness to adopt it

Nice to Have

• Background in telecom, CPaaS, VoIP, or real-time communications
• Experience with Kafka, Kafka Streams, or similar event streaming platforms
• Contributions to open-source projects
• Experience mentoring or leading small teams in a senior IC capacity