Sr Data Scientist

RELX; Gurugram District; On-site; INR 3,500,000 - 5,500,000; Full time

Benefits offered by this job

Health Insurance

Flexible Working Arrangement

Group Life Insurance

Medical Screening

Paid Time Off

Job summary

RELX is seeking a Senior Data Scientist to design and deploy GenAI-powered solutions for business delivery projects. You will build RAG pipelines, fine-tune LLMs, and develop prompt strategies to improve AI capabilities across products.

You will collaborate with Engineering, Product, and SMEs to deliver AI-driven features, monitor model performance in production, and contribute to architecture for scalable AI systems.

Qualifications

• 6–8 years of experience in data science / ML roles.
• Strong Python and ML fundamentals required.
• Expertise in NLP and generative AI models.

Responsibilities

• Design, develop and deploy ML and GenAI solutions in production.
• Build and optimize retrieval-augmented generation pipelines.
• Fine-tune and evaluate large language models and embeddings.
• Develop prompt engineering strategies and evaluation frameworks.
• Implement scalable ML pipelines using Python.

Skills

Python

ML

NLP

Generative AI

RAG

LLMs

Prompt engineering

MLOps

SQL

AWS/GCP/Azure

Tools

LangChain

LlamaIndex

Scikit-learn

XGBoost

LightGBM

PyTorch

TensorFlow

HuggingFace

OpenAI APIs

Pinecone/FAISS/Weaviate/OpenSearch

Job description

Job Description

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.)

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.

We are committed to providing a fair and accessible hiring process. If you have a disability or other need that requires accommodation or adjustment, please let us know by completing our Applicant Request Support Formor please contact 1-855-833-5120.

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