Senior Python Backend Developer (Bengaluru)

Description Our customer's product is an AI-powered platform that helps businesses make better decisions and work more efficiently. It uses advanced analytics and machine learning to analyze large amounts of data and provide helpful insights and predictions. The platform is widely used in various industries, including healthcare, to optimize processes, improve customer experiences, and support innovation. It integrates easily with existing systems, making it easier for teams to make quick, data-driven decisions to deliver cutting-edge solutions. Requirements - Bachelor’s or Master’s degree in Computer Science or a related field. - Strong Python coding skills - 7+ years. - 2+ years of hands-on experience with machine learning and production LLM systems. - Experience building backend APIs with FastAPI, async patterns, rate limiting, and SQLAlchemy - 3+ years. - Experience designing maintainable and extensible systems using dependency injection, interfaces, and abstract base classes. - Experience with vector databases such as Pinecone, Weaviate, or Chroma, as well as hybrid search. - Strong understanding of RAG architectures, including retrieval, reranking, context assembly, and response generation. - Hands-on experience with LangChain and LangGraph for building and orchestrating LLM workflows. - Advanced Python skills, including async/await, type hints, Pydantic, and SOLID principles. - MLOps experience with MLflow, model versioning, and A/B testing; experience with Langfuse is a plus. - Experience in NLP and computer vision, including document understanding, OCR, and GPT-4 Vision. - Experience building feature pipelines, real-time and batch inference systems, and model serving. - Hands-on experience with Hugging Face is required; experience with LlamaIndex is a plus. Nice to have skills: - Understanding of DevOps, CI / CD including: Docker containerization, Azure DevOps pipelines or GitHub Actions, Kubernetes (nice to have); - Data security including: Multi-tenant d