Senior Data Scientist I
Relx
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This role on the market
2,511 open scientist roles across 380 companies are on ApplySarthi right now, most of them in Bengaluru (145), Hyderabad (77), Delhi NCR (27).
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What scientist roles keep asking for: Python (63%), Machine learning (51%), SQL (29%), LLMs (20%), Deep learning (18%), C++ (18%), R (18%), Java (15%) — counted across their open postings here.
Data Scientist jobs in the United Kingdom · Data Scientist jobs in London · Remote Data Scientist jobs · CI/CD jobs · Elasticsearch jobs · Hugging Face jobs · LLMs jobs
Relx has 939 open roles listed here.
- Senior Quality Test Engineer IIbengaluru
- Customer Research Analyst
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- Registration Lead, Product Success - FTC until Jan 2028
- Legal Editor I
Counted across 14 company job boards, updated as roles open and close.
Preparing for this interview
Interviews for scientist roles keep coming back to Python, Machine learning, SQL, LLMs. Practise those questions before you sit with Relx.
Questions you are likely to be asked
- Why do you want to join Relx?
- What is your experience with Machine learning? Tell me one thing you learned the hard way.
- Walk me through a model you built, from the data to how it was used.
- How did you know your model was actually good, and not just good on your test set?
- Tell me about a time the data was messy or wrong. What did you do?
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Practise the Senior Data Scientist I at Relx interview free →Interested in building and shaping AI systems that combine machine learning, retrieval, and modern language models to solve real-world problems About the team: You’ll work closely with engineering, product, and cross-functional partners to deliver robust, scalable solutions, while helping raise the technical bar across the team. About the role : We’re looking for a Senior Data Scientist I to lead the design and development of intelligent, data-driven systems that help users explore, understand, and act on complex information. In this role, you’ll take ownership of high-impact problem areas—driving solutions from concept to production while navigating ambiguity and making key technical decisions. You’ll combine strong machine learning foundations with modern AI approaches to build systems that integrate prediction, retrieval, and generation at scale. What You’ll Do Lead the design and development of machine learning and AI-powered systems for complex, real-world problems Own end-to-end solutions—from problem framing and experimentation to production deployment and iteration Drive technical direction for key problem areas, making informed trade-offs between modeling approaches, system design, and scalability Apply a range of techniques—from classical ML to large language model (LLM) approaches—based on the problem context Design systems that combine retrieval, ranking, and generation to enable intelligent workflows Define and drive evaluation strategies, ensuring high-quality, reliable, and trustworthy outputs Contribute to system architecture and scalability, working closely with engineering teams Mentor and guide other data scientists, helping raise the overall technical bar of the team Influence product direction by translating technical insights into actionable recommendations Collaborate with product teams to design experiments, measure impact, and iterate based on evidence What We’re Looking For Core Qualifications Significant experience in data science, machine learning, or a related field Strong Python skills with a track record of building production-quality, maintainable systems Deep understanding of machine learning fundamentals and experience applying them in real-world settings Proven experience owning and delivering end-to-end data science or AI projects Strong problem-solving skills and ability to navigate ambiguity Ability to write clean, tested, well-documented code suitable for collaborative development Experience working with cross-functional teams to deliver user-facing data or AI products AI & Modern Techniques Hands-on experience working with large language models (LLMs) in applied or production settings Experience with retrieval-based approaches (e.g., embeddings, semantic search, ranking) Experience building or contributing to LLM-powered systems involving multi-step reasoning, tool use, or workflow orchestration (e.g., agent-based approaches or frameworks such as LangChain, LangGraph, or similar) Strong understanding of when to apply classical machine learning vs. LLM-based approaches Data & Engineering Experience working with large, complex, and unstructured datasets (especially text) Familiarity with ML frameworks (e.g., PyTorch, TensorFlow, Scikit-learn, HuggingFace) Experience with cloud platforms and modern development workflows (Git, CI/CD) Ability to contribute to scalable system design and collaborate effectively with engineering teams Experience with vector databases or search infrastructure such as Elasticsearch, OpenSearch, Qdrant or similar. Collaboration & Leadership Excellent communication skills with the ability to influence both technical and non-technical stakeholders Ability to explain model behavior, trade-offs, and limitations clearly to non-technical audiences Experience mentoring or supporting other team members Ability to drive projects forward independently while aligning with broader team goals Nice to Have Experience with search, information retrieval, or knowledge systems at scale Experience designing evaluation frameworks for AI-generated or retrieval-based outputs Exposure to MLOps tools and practices (e.g., MLflow, Kubeflow, SageMaker) Experience optimizing systems for performance, scalability, or cost Familiarity with frameworks or tools for orchestrating LLM-based workflows and agent-like systems Experience working in structured and reproducible development environments (e.g., clear specification of tasks, experiment tracking, and collaborative workflows) Interest in emerging paradigms such as spec-driven or AI-assisted development Experience with citation-aware, source-grounded, or evidence-based AI systems Why Join Us Lead work on impactful problems involving complex, real-world data Build and shape systems that combine machine learning fundamentals with modern AI approaches Collaborate with a team focused on quality, scalability, and meaningful outcomes Opportunity to influence both technical direction and product evolution 





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Listed on workday · posted 2026-11-03. ApplySarthi collects openings and links to application pages; the role is advertised by Relx, not by us.