Sr. Data Scientist

RELX


Date: 2 weeks ago
City: Chennai, Tamil Nadu
Contract type: Full time
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)

Good 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 Health Insurance Options: Competitive rates negotiated by the company.
  • Group Life Insurance: Ensuring financial security for your loved ones.
  • Group Accident Insurance: Extra protection for accidental death and permanent disablement.
  • Flexible Working Arrangement: Achieve a harmonious work-life balance.
  • Employee Assistance Program: Access support for personal and work-related challenges.
  • Medical Screening: Your well-being is a top priority.
  • Modern Family Benefits: Maternity, paternity, and adoption support.
  • Long-Service Awards: Recognizing dedication and commitment.
  • New Baby Gift: Celebrating the joy of parenthood.
  • Subsidized Meals in Chennai: Enjoy delicious meals at discounted rates.
  • Various Paid Time Off: Take time off with Casual Leave, Sick Leave, Privilege Leave, Compassionate Leave, Special Sick Leave, and Gazetted Public Holidays.
  • Free Transport pick up and drop from the home -office - home (applies in Chennai)

We know your well-being and happiness are key to a long and successful career. We are delighted to offer country specific benefits. Click here to access benefits specific to your location.

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