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.
About you
We are looking for someone who is a whizz with Python, has experience with microservices, and is happy to get stuck into a gritty, fast-paced environment to work within our awesome Python team, championing and leading the build of secure, robust, and high-performance systems.
The Opportunity
Our Python team builds highly available, low-latency microservices from scratch using the latest bleeding-edge technologies.
You will own and develop multiple services across our revenue domain billing, tax calculation, customer commitment management, and AI-powered revenue operations agents. You'll have the opportunity to make a huge impact on our growing company by solving complex problems as we scale. You'll be part of a group of people working together to build solutions to mission-critical problems and a company that values the very best ideas. People rely on our products to communicate daily, which means they rely on us to build things with a high degree of resiliency and reliability.
- Design developer/agent-friendly APIs.
- Build, test, and deploy applications to deliver critical global communications services.
- Identify and resolve issues related to latency, scalability, and performance.
- Create tools and AI agents to automate revenue operations.
- Investigate and resolve production issues by tracing through logs, data, and code to find root causes.
Who we're looking for
- 5+ years of professional software development experience with an object-oriented programming language
- Experience with web application development using Python (FastAPI, aiohttp, or similar).
- Experience designing and building RESTful APIs.
- Experience working with asynchronous programming
- Comfort working with PostgreSQL and relational databases at scale, including schema migrations, raw SQL queries and query optimization.
- Experience with event-driven architectures and message brokers (RabbitMQ, Kafka or similar).
- Experience in a highly available, uptime-critical production environment.
- Deep knowledge of microservice architecture patterns and anti-patterns
- Familiarity with Docker, Kubernetes, Consul, GitHub Actions, Argo CD, Prometheus, or OpenTelemetry.
- Strong troubleshooting skills — you can dig through logs, query databases, trace distributed systems, and read unfamiliar code to get to the bottom of an issue.
- Comfortable owning services in production, including on-call responsibilities and incident resolution.
- Comfortable using AI coding agents as part of your investigation workflow, while knowing when to rely on your own judgement.
Bonus Points For
- Experience with billing, tax, or financial systems.
- Telecom domain knowledge
- Experience with SQLAlchemy and Alembic.
- You take a thoughtful approach to decision making, knowing when to move fast and when to long-term optimize.
- You want to work in a fast-paced, product-driven environment.
- You keep up to date with the latest technologies and patterns, and enjoy sharing what you've learned.
- Familiarity with agent communication protocols (MCP, A2A).
- Experience building AI agents or LLM-powered applications.
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Skills Required
- 5+ years of professional software development experience
- Experience with web application development using Python
- Experience designing and building RESTful APIs
- Experience with asynchronous programming
- Comfort working with PostgreSQL and relational databases
- Experience with event-driven architectures and message brokers
- Experience in a highly available production environment
- Deep knowledge of microservice architecture patterns
- Strong troubleshooting skills
- Comfortable owning services in production
What We Do
Telnyx delivers voice, messaging and more for applications and next-generation communications companies. Offering a communications platform that provides global carrier-grade services, Telnyx maintains an international, private IP network and grants its customers unprecedented control over their communications through its innovative portal and RESTful API. Telnyx products include voice (elastic SIP trunking, global number search, and telephony data), programmatic messaging, wireless (mobile IoT), embedded communications (WebRTC) and automated networking. Customers provision services a la carte and pay by usage for scalable, on-demand communications.
