Design, develop and maintain scalable full-stack applications, with primary responsibility for Python backend services and APIs. Develop secure REST APIs and microservices using FastAPI, Flask or Django; apply robust Python fundamentals, asynchronous programming, exception handling, logging, authentication and authorization; write unit and integration tests; integrate services with MongoDB and AWS; develop and integrate responsive React.js components; work with Git, CI/CD and Docker; participate in code reviews, troubleshooting and performance optimization; and collaborate in an Agile/Scrum environment.