Senior Python Backend Developer
5 days ago
About BabyBillionBabyBillion is one of the fastest-growing kids' content companies in the world. With over 1 billion monthly views, we are on a mission to become the world’s #1 kids' content channel by December 2025. We create world-class educational and entertaining videos that captivate preschool audiences globally. We are looking for a highly creative and data-driven Scriptwriter to join our passionate team and help us scale our storytelling to new heights.Job Summary We are seeking an experienced Senior Python Backend Developer to join our team. In this role, you will be instrumental in designing, building, and scaling our high-performance backend systems. The ideal candidate has a strong background in creating robust APIs, integrating key services, and architecting solutions for high-traffic applications. You will take a leading role in enhancing our platform, migrating to a microservices architecture, and mentoring junior developers.Key ResponsibilitiesDesign, develop, and maintain production-grade applications usingFastAPIto support over 200 endpoints. Build and secure RESTful APIs with robust versioning, documentation, and authentication mechanisms likeJWTandOAuth . Manage and optimizeMongoDBdatabases, including writing complex aggregation pipelines. Implement and manage asynchronous background tasks usingCelerywithRedisorRabbitMQ . Integrate and maintain payment gateways such asRazorpayandStripe . Lead architectural improvements, including the migration from a monolithic to amicroservicesarchitecture. Develop real-time features usingWebSocketsand design systems to handle 10,000+ concurrent users. Implement automated testing, performance monitoring (e.g., OpenTelemetry), and system optimizations. Mentor junior developers and contribute to architectural planning and best practices.Required Skills & Experience2+ years of professional experience in backend development. Strong proficiency inPython , with expertise in asynchronous programming (async/await). Proven experience building and scaling applications withFastAPI . In-depth knowledge ofMongoDB , including query optimization. Solid understanding of authentication, security principles, and implementing JWT/OAuth. Hands-on experience with background task processing usingCelery . Excellent problem-solving skills and a passion for writing clean, maintainable code.Preferred QualificationsExperience withmicroservices , event-driven architecture, and API gateways. Familiarity with containerization ( Docker ) and CI/CD pipelines. Knowledge of cloud platforms likeAWSorGCP . Exposure to AI/ML tools (e.g., ONNX Runtime),Kafka , orGraphQL .Our Tech StackLanguage/Framework:Python 3.12+, FastAPI Database:MongoDB (Motor) Task Queues/Brokers:Celery, Redis, RabbitMQ Payments:Razorpay, Stripe AI/ML:ONNX Runtime, Rembg Infrastructure:Docker, Gunicorn, Uvicorn Monitoring:OpenTelemetry, Prometheus Testing:Pytest
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