Python Backend Engineer - APIs

Python Backend Engineer - APIs Phoenix, AZ (Onsite 3 days/week - Hybrid) Long Term Contract Our client is looking for a strong Python Backend Engineer to design and build high-performance APIs supporting enterprise-scale financial systems. This role is backend-heavy, API-driven and production-focused. You will work closely with product, architecture and platform teams to build secure, scalable microservices. Core Responsibilities Design and develop RESTful APIs using Python Build scalable backend services in a microservices architecture Develop production-grade services with strong error handling and logging Integrate with relational and NoSQL databases Write unit tests and participate in code reviews Deploy and support services in cloud environments Collaborate with cross-functional engineering teams

7+ years of backend development experience Strong Python experience (FastAPI, Flask, Django REST) Deep understanding of REST API design principles Experience with microservices architecture Strong SQL skills (PostgreSQL / MySQL / Oracle) Experience with Git and CI/CD pipelines Understanding of containerization (Docker) Experience working in Agile environments Preferred: Experience with cloud platforms (AWS preferred) Kafka or event-driven architecture exposure Experience in financial services domain Familiarity with Kubernetes Exposure to API security (OAuth2, JWT)