Senior Python Developer

**Responsibilities** * Architect, develop, and maintain high\-quality Python libraries and modules used by enterprise clients worldwide. * Ensure Python libraries and modules are secure and free from vulnerabilities in both code and dependencies. * Define, promote, and enforce Python coding conventions, linters, static analysis, and architectural guardrails. * Perform (and lead) code reviews that catch design or performance issues early. * Build internal libraries, shared modules, or tooling that abstract common patterns and increase team velocity. * Work collaboratively with Product, QA, DevOps, and other engineers to translate requirements into reliable, maintainable implementations. * Profile, monitor, and optimize performance, memory usage, and resource consumption of Python services. * Contribute to API design, interface contracts, data models, and integration strategies. * Stay current in the Python ecosystem and introduce innovations or best practices where appropriate. * Document high\-level architecture, module contracts, and design rationale. * Mentor development teams via pair programming, review feedback, internal sessions, and guidance. **Required Qualifications** * Degree in Computer Science, Engineering, or a related field. * Professional experience (5\+ years) with Python development, with a track record of delivering large\-scale projects. * Deep mastery of Python, including language internals, decorators, concurrency, threading/async, and memory management. * Experience designing, creating, and maintaining Python packages. * Proficiency with testing frameworks (pytest or unittest), CI/CD pipelines, and package managers (uv, conda, pip). * Publications and contributions to open\-source Python libraries and community involvement (PyPI). * Excellent problem\-solving skills, system thinking, and debugging large systems. * Strong communication skills (verbal/written). * Experience working with MS Office/Excel, Google Suite, Notion, Slack. * Ability to travel as needed to support events and meet the team. * Portuguese \- Fluent. * English \- Advanced. **Preferred Qualifications** * Experience with asynchronous frameworks, event loops, or systems like Celery, asyncio, RPC frameworks, or message brokers. * Experience with Rust and integrating Python with Rust. * Solid experience with relational (e.g. PostgreSQL) and non\-relational databases, ORM tools, and schema design. * Familiarity with cloud infrastructure (AWS, GCP, or Azure), containers (Docker), and deployment orchestration. * Relevant hands\-on experience with automation projects. * Prior experience in an early\-stage, high\-growth, and fast\-paced startup environment. Escolaridade mínima: Ensino Superior \- Concluído