RELX

Sr. Data Scientist

India · Work style not stated · Full time

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About the role

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EmployerRELX
LocationIndia
Work styleWork style not stated
Employment typeFull time
Employer posted18 Sep 2026

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

Show full description

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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We are an equal opportunity employer: qualified applicants are considered for and treated during employment without regard to race, color, creed, religion, sex, national origin, citizenship status, disability status, protected veteran status, age, marital status, sexual orientation, gender identity, genetic information, or any other characteristic protected by law.

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