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Software Engineer - Python at Telnyx. Location Information: Brazil. 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..  .  . #LI-KG1 #LI-REMOTE