Python Developer

Full job description Python Developer Location: Remote Time Zone Preference: U.S. Eastern Time strongly preferred What You Will Do Build and maintain Python-based production systems Learn a complex third-party Python library inside and out Design and implement thorough unit tests Identify and explain subtle differences in outputs, edge cases, and numerical behavior Diagnose and resolve issues by reasoning through code and test results Write clear, maintainable, well-tested Python Communicate effectively with engineers and non-technical stakeholders Build and maintain data workflows using Microsoft Fabric Improve system reliability, performance, and clarity over time Absolute Requirements Strong proficiency in Python Proven ability to deeply learn and work with unfamiliar libraries Demonstrated high attention to detail in testing and validation Comfort reading source code to understand actual behavior Experience writing meaningful unit tests Excellent written and spoken English Ability to collaborate effectively in a remote environment Working hours that align well with U.S. Eastern Time Nice to Have Experience with Microsoft Fabric, including notebooks, Lakehouse, or Warehouses Experience validating numerical or data-driven outputs Strong debugging skills in production systems Background in numerical computing, optimization, or modeling Experience taking ownership of critical systems