About The Role:
The Sr. Data Scientist to work on complex project involving AI, GenAI, RAG and Agentic Solution for the business delivery projects

Responsibilities
• Design, develop, and deploy machine learning and GenAI solutions in production environments

• Build and optimize Retrieval-Augmented Generation (RAG) pipelines

• Fine-tune and evaluate Large Language Models (LLMs)

• Develop prompt engineering strategies and evaluation frameworks

• Implement scalable ML pipelines using Python

• Work with structured and unstructured data sources

• Collaborate with Engineering, Product, and SMEs to deliver AI-driven features

• Monitor model performance, drift, and reliability in production

• Conduct experimentation, A/B testing, and performance benchmarking

• Contribute to architecture design for AI-powered systems

Requirements
Experience: 6–8 Years
Core Stack
• Python (advanced proficiency)

• Machine Learning (supervised/unsupervised learning, NLP)

• Generative AI (LLMs, prompt engineering, embeddings)

• RAG architecture and vector search





• Model evaluation and validation frameworks

ML & AI Tools
• LangChain / LlamaIndex (or similar frameworks)

• Scikit-learn / XGBoost / LightGBM

• PyTorch / TensorFlow

• HuggingFace / OpenAI / LLM APIs

• Vector databases (Pinecone, FAISS, Weaviate, OpenSearch, etc.)

Data & Infrastructure
• SQL and data querying

• Experience with AWS / Azure / GCP

• CI/CD for ML deployments

• Model tracking tools (MLflow preferred)

Valuable to Have
• Experience in legal, regulatory, or publishing domains

• Experience with model monitoring and MLOps

• Knowledge of fine-tuning techniques (LoRA, PEFT, QLoRA)

• Experience with multi-agent frameworks (AutoGen, LangGraph, etc.){Empty}

Working for you:
We know that your wellbeing and happiness are key to a long and successful career. These are some of the benefits we are delighted to offer:
• Comprehensive Health Insurance: Covers you, your immediate family, and parents.

• Enhanced Healt

📌 Sr. Data Scientist (Chennai)
🏢 LexisNexis UK
📍 Chennai