Artificial Intelligence/Machine Learning Engineer (Generative AI S) at Vitharka Inc.

Designed and developed a Generative AI‑based web application integrating LangChain, LangGraph, OpenAI models, and MongoDB Vector Store for real‑time document retrieval and context‑aware chatbot responses. Architected RAG‑based pipelines enabling hybrid retrieval of structured and unstructured content, improving chatbot accuracy and contextual relevance. Implemented contextual retrieval with prompt augmentation and vector similarity. Introduced vector filtering to apply search filters (tags or source types) for targeted responses. Built Python FastAPI microservices to generate embeddings, perform similarity search, manage knowledge bases, and query vector stores. Developed secure, scalable Java Spring Boot services for user registration, JWT authentication, chat history management, and integration with AI services. Created a modular ReactJS frontend for user interaction, document upload, and chatbot communication. Implemented real‑time monitoring, logging, and alerting across