Senior Software Engineer (Python)

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 the Role

We are looking for a Senior Engineer to join the Pricing, Costs & Routing (PCR) squad. You will own the automation and data pipelines that power pricing, billing, and financial reporting across Telnyx's product portfolio — voice, messaging, wireless, and more. This is a backend-heavy role working with Airflow DAGs, rate deck management, cost analysis, and pricing APIs at scale.

What You Will Do

• Own and maintain complex Airflow DAGs for pricing automation, margin reporting, and cost analysis


• Build and manage rate deck pipelines across multiple product lines


• Develop and maintain pricing APIs and services in Python (async)


• Analyze CDR/MDR data to identify vendor discrepancies and drive refund/reconciliation workflows


• Build automated discrepancy resolution and self-healing pipelines


• Create and maintain financial reporting: monthly margin reports, negative margin alerts, GP calculations


• Design and build new automation for quoting workflows

What You Bring

• 5+ years of Python experience with strong async programming (aiohttp, asyncpg, FastAPI)


• Airflow production experience — you've built and maintained complex DAGs, not just run them


• SQL fluency across PostgreSQL and analytical databases (Athena, BigQuery, or similar)


• Comfort working with financial and pricing data (margins, markups, cost basis, currency)


• Ability to read and debug Java services when needed


• CI/CD experience with Docker, Jenkins, or GitHub Actions

Nice to Have

• Go experience


• Telecom or CPaaS background (CDRs, termination rates, origination prefixes)


• Salesforce or CRM integration experience


• Experience with pricing engines or billing systems


• AI coding agent experience — the team uses AI-assisted tooling heavily