Sr. Python API Engineer

Sr. Python API Engineer

Location: USA – Remote

Type: Full-Time / Contract

We are hiring a Senior Full Stack Software Engineer for one of our premier consulting clients. This role is ideal for engineers who excel in building high-performance backend systems, secure authentication flows, and production-grade cloud deployments.

Key Responsibilities

• Design and develop high-performance RESTful APIs using FastAPI with async/await for scalable backend services.
• Create comprehensive API specifications using FastAPI’s automatic OpenAPI/Swagger documentation.
• Own API performance testing strategy and execution using Grafana K6, JMeter, or equivalent tools.
• Implement OAuth 2.0/OIDC authentication flows (authorization code, client credentials, refresh token) integrated with Ping Identity or similar IDPs.
• Partner with security teams to ensure adherence to OAuth 2.0 and API security best practices.
• Build secure API endpoints with scope-based access control, token validation, and JWT verification.
• Develop middleware for authentication, token refresh, and session management using FastAPI dependencies.
• Write unit and integration tests for authentication flows using pytest.
• Implement end-to-end observability using OpenTelemetry, Grafana, Prometheus, and Tempo.

Required Skills

• 5+ years of Python development with strong expertise in FastAPI.
• Hands-on experience implementing OAuth 2.0/OIDC authentication flows.
• 5+ years of async programming, Pydantic model design, and dependency injection.
• Strong understanding of PostgreSQL or MongoDB database design.
• Proficiency in cloud platforms (AWS, GCP, Azure).
• Strong Kubernetes and containerization experience.
• Experience with CI/CD pipelines and automation.
• Working knowledge of Ping Identity tools (PingFederate, PingOne, PingAccess).
• Strong understanding of JWT, API security, and REST architectural standards.
• Knowledge of React or Angular and exposure to frontend testing libraries.

Preferred Skills

• Knowledge of FHIR interoperability standards.
• Familiarity with Material UI (MUI) and modern design systems.

Acunor is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees and applicants, regardless of race, gender, religion, age, disability, sexual orientation, or veteran status.