Mujeebur Rehman

• Engineered multi-agent AI workflows using LangChain Agents, GPT-4o, and Gemini Pro, automating curriculum personalization for 500+ active users.
• Managed real-time query processing, tool invocation, and memory management, returning context-aware responses to users in real time.
• Built end-to-end RAG pipelines using ChromaDB vector store and LangChain retrieval chains over large unstructured knowledge bases.
• Achieved low hallucination rates and sub-second retrieval speeds on a corpus of 10K+ documents across the deployed RAG system.
• Designed and shipped production FastAPI services exposing LLM-powered endpoints for real-time AI interactions at scale.
• Integrated PostgreSQL for user session state management, interaction history tracking, and structured output storage.
• Reduced LLM inference latency by 50% through LoRA fine-tuning, few-shot prompting, and chain-of-thought prompt engineering strategies.
• Improved domain response relevance by 40% through optimized model fine-tuning techniques and advanced prompt engineering approaches.

• Designed ETL pipelines using Python, Pandas, and PostgreSQL, processing 100K+ records with schema validation and data cleansing.
• Engineered features for ML training pipelines, supporting downstream model development and production deployment workflows.
• Built predictive ML models including time-series forecasting using ARIMA and SARIMA, and classification models using XGBoost and Random Forest.
• Deployed ML models as FastAPI inference endpoints, enabling real-time predictions for business operations teams.
• Delivered Power BI dashboards and automated reports, improving business reporting efficiency by 30% through optimized ETL pipelines and interactive dashboard design.
• Translated analytical insights into executive-level narratives and reports, communicating complex findings to non-technical stakeholders across the business.

• Developed 3+ scalable full-stack applications using React.js, Node.js, Express.js, and MongoDB with FastAPI-based microservices.
• Implemented JWT authentication systems and designed RESTful APIs integrated with third-party payment gateways and mapping services.
• Contributed to CI/CD pipeline setup and deployment workflows, supporting the engineering teams release and delivery processes.