Patrick Haczyk
From: United States of America
Location: Chicago, US
On Useme since 12 April 2026
About me
Backend Software Engineer with 5+ years of experience building scalable, highperformance backend systems using Python and modern cloud technologies. Specialized in designing RESTful APIs and microservices using FastAPI and Pydantic, with a strong focus on data validation, system reliability, and performance optimization. Experienced in working with cross-functional teams to deliver production-ready features in cloud environments, ensuring high availability, maintainability, and security.