Sr. Full Stack Software Engineer - Remote

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.

• 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.

• 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, Google Cloud Platform, 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.

• Knowledge of FHIR interoperability standards.

• Familiarity with Material UI (MUI) and modern design systems.