Data Scientist III

Job Description

About our Team:

LexisNexis Legal & Professional, which serves customers in more than 150 countries with 11,800 employees worldwide, is part of RELX, a global provider of information-based analytics and decision tools for professional and business customers. Our company has been a long-time leader in deploying AI and advanced technologies to the legal market to improve productivity and transform the overall business and practice of law, deploying ethical and powerful generative AI solutions with a flexible, multi-model approach that prioritizes using the best model from today’s top model creators for each individual legal use case.

About The Role

We are seeking a Technical Data Scientist / AI Engineer with 4–5 years of commercial experience blending traditional data science with cutting-edge artificial intelligence. You are an autonomous developer who writes production-grade Python, possesses deep foundations in Machine Learning (ML) and Deep Learning (DL), and has hands-on experience building generative workflows like Retrieval-Augmented Generation (RAG) and autonomous AI Agents. You will be responsible for bringing models out of notebooks and into robust, scalable software environments.

Responsibilities

• ML/DL System Development: Design, train, and optimize custom machine learning algorithms and deep neural networks (Transformers, CNNs, or RNNs) to solve complex business predictive problems.
• GenAI & Agent Design: Build and orchestrate production-level autonomous AI Agents and Multi-Agent structures using Python frameworks (e.g., LangGraph, CrewAI, AutoGen).
• Advanced RAG Pipelines: Architect high-throughput RAG systems, managing the complete pipeline across semantic chunking, multi-stage retrieval, embedding generation, reranking, and vector store integration.
• Python Engineering: Write clean, modular, and performance-optimized Python code. Enforce high standard-engineering practices including unit testing, Git version control, and CI/CD alignment.
• Cloud & Infrastructure Alignment: Assist in porting localized AI and ML workflows into cloud environments, ensuring proper resource allocation for heavy training and inference workloads.
  
  

Requirements

• Experience: 3 to 4 years of professional, hands-on experience working as a Data Scientist, ML Engineer, or AI Developer in a production software environment.
• Core Toolkit: Proven track record building applications using Python and foundational libraries such as scikit-learn, PyTorch, or TensorFlow.
• Generative AI Stack: Direct experience manipulating LLMs, implementing vector databases (e.g., Pinecone, Qdrant, Milvus, Chroma), and tuning systemic prompt graphs.
• Data Engineering Foundations: Proficient in writing optimized SQL, data cleaning, and structuring pipelines utilizing pandas or NumPy.
• AWS Knowledge (Good to Have): Experience building, testing, or serving models using cloud-native platforms like Amazon SageMaker AI or orchestrating managed endpoints via Amazon Bedrock.
  
  

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)
  
  

About The Business

LexisNexis Legal & Professional® provides legal, regulatory, and business information and analytics that help customers increase their productivity, improve decision-making, achieve better outcomes, and advance the rule of law around the world. As a digital pioneer, the company was the first to bring legal and business information online with its Lexis® and Nexis® services.

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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