Senior Software Engineer (Python)

About Telnyx

Telnyx is an industry leader thats not just imagining the future of global connectivitywere 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 were shaping a new era of seamless interconnection between people devices and applications.

Were driven by a desire to transform and modernize whats antiquated automate the manual and solve real-world problems through innovative connectivity solutions. As a testament to our success were 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. Were 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

Were looking for a senior engineer whos experienced with Python and Airflow has a sharp eye for data and financial accuracy and is happy to get stuck into a fast-paced environment to work within our Pricing Costs & Routing (PCR) squad. Youll champion and lead the build of the automation and data pipelines that power pricing billing and financial reporting across Telnyxs product portfolio.

The Opportunity

Our PCR squad owns the backend systems and pipelines behind pricing margin reporting and cost analysis across voice messaging wireless and the rest of Telnyxs product portfolio. Youll work with complex Airflow DAGs rate deck management pricing APIs and CDR/MDR data at scale.

Youll own and develop services and pipelines that finance sales and product teams rely on every day to make pricing decisions reconcile vendor costs and report on the health of the business. Youll have the opportunity to make a huge impact by automating workflows that are currently manual building self-healing pipelines and bringing more rigor to how we manage pricing across a growing product set. Youll be part of a small focused team where the work you ship is visible and consequential.

• 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).
• Analyse CDR/MDR data to identify vendor discrepancies and drive refund and reconciliation workflows.
• Build automated discrepancy resolution and self-healing pipelines.
• Create and maintain financial reporting: monthly margin reports negative margin alerts and GP calculations.
• Design and build new automation for quoting workflows.

Who were looking for

• 5 years of professional Python experience with strong async programming (aiohttp asyncpg FastAPI).
• Airflow production experience youve 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.
• Strong troubleshooting skills you can dig through logs query databases and trace data pipelines to find the root cause of a discrepancy.
• Comfortable owning services and pipelines 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

• Go experience.
• Telecom or CPaaS background (CDRs termination rates origination prefixes).
• Salesforce or CRM integration experience.
• Experience with pricing engines or billing systems.
• You take a thoughtful approach to decision making knowing when to move fast and when to optimise for the long term.
• 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 youve learned.
  
  

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