RELX Group

Senior Data Scientist I

RELX Group London, ENG, GB
Full-time Posted 2 months ago

Role overview

We are looking for a Senior Data Scientist I to help design, build, and evaluate advanced AI capabilities powering LeapSpace. This role will focus heavily on applied AI research and development , including prototyping intelligent workflows, integrating large language models with trusted scientific data, and advancing AI-assisted research experiences.

You will work across retrieval systems, generative AI, reasoning workflows, evaluation frameworks, and AI experimentation , helping shape the future of AI-powered scientific discovery at Elsevier.

This role is ideal for someone with strong hands-on experience in applied AI, NLP, retrieval systems, and LLM-based applications , who enjoys rapidly prototyping and translating emerging AI techniques into scalable product capabilities.

Responsibilities

  • check_circle Lead prototyping and development of LLM-powered research workflows , including: Scientific question answering Literature summarization Semantic exploration and discovery Research insight generation Citation-aware reasoning workflows
  • check_circle Scientific question answering
  • check_circle Literature summarization
  • check_circle Semantic exploration and discovery
  • check_circle Research insight generation
  • check_circle Citation-aware reasoning workflows
  • check_circle Design and iterate on agentic and multi-step AI workflows using frameworks such as LangGraph and related orchestration tooling.
  • check_circle Apply state-of-the-art techniques in: NLP Generative AI Embeddings and semantic representations Retrieval-augmented generation (RAG) AI reasoning and orchestration
  • check_circle NLP
  • check_circle Generative AI
  • check_circle Embeddings and semantic representations
  • check_circle Retrieval-augmented generation (RAG)
  • check_circle AI reasoning and orchestration
  • check_circle Rapidly evaluate emerging AI models, tooling, and frameworks to identify opportunities for product innovation.
  • check_circle Translate applied AI research into scalable, production-oriented solutions that improve researcher productivity and trust.
  • check_circle Contribute to experimentation around prompt engineering, context management, grounding strategies, and hallucination mitigation.
  • check_circle Support integration of scientific metadata, ontologies, and knowledge assets into AI workflows.
  • check_circle Design and optimize search and retrieval pipelines , including lexical, vector, and hybrid retrieval approaches.
  • check_circle Develop and improve RAG systems that integrate LLMs with trusted scientific and biomedical content.
  • check_circle Experiment with embeddings, re-ranking models, chunking strategies, and retrieval orchestration to improve relevance and answer quality.
  • check_circle Build scalable workflows for semantic search and knowledge discovery.
  • check_circle Collaborate closely with engineering teams to productionize AI and retrieval systems.
  • check_circle Develop and evolve evaluation frameworks for search and AI systems, including: IR metrics (e.g., NDCG, recall, precision) LLM and RAG evaluation metrics (e.g., grounding, faithfulness, hallucination detection)
  • check_circle IR metrics (e.g., NDCG, recall, precision)
  • check_circle LLM and RAG evaluation metrics (e.g., grounding, faithfulness, hallucination detection)
  • check_circle Design offline evaluation methodologies and contribute to online experimentation and A/B testing.
  • check_circle Build and maintain evaluation datasets, benchmark suites, and annotation strategies.
  • check_circle Drive rigorous experimentation to measure system improvements and user impact.
  • check_circle Contribute to responsible AI practices, including quality, reliability, and trust evaluation.
  • check_circle Partner with product managers, engineers, UX researchers, and domain experts to deliver impactful AI capabilities.
  • check_circle Translate complex technical findings into actionable recommendations for stakeholders.
  • check_circle Contribute to technical strategy and roadmap discussions for LeapSpace AI capabilities.

Basic qualifications

  • Master’s or PhD in Computer Science, Data Science, Machine Learning, NLP, Information Retrieval, or a related field
  • ~3–5+ years of experience in applied AI, machine learning, NLP, or information retrieval
  • Strong hands-on experience with: LLM-based applications and generative AI systems RAG pipelines and retrieval systems Search and retrieval architectures (lexical, vector, hybrid) Evaluation methodologies for IR and generative AI systems
  • LLM-based applications and generative AI systems
  • RAG pipelines and retrieval systems
  • Search and retrieval architectures (lexical, vector, hybrid)
  • Evaluation methodologies for IR and generative AI systems
  • Advanced programming skills in Python
  • Experience with modern AI/ML frameworks and tooling (e.g., PyTorch, Hugging Face, LangChain, LangGraph , Haystack)
  • Experience working with Databricks or similar distributed data/ML platforms
  • Strong understanding of experimentation design, evaluation frameworks, and statistical analysis
  • Proficiency with data visualization and analytical tooling (e.g., Tableau, Power BI, matplotlib, seaborn)

Preferred qualifications

  • Experience building AI assistants, agentic workflows, or conversational AI systems
  • Experience working on large-scale search, ranking, or recommendation systems
  • Familiarity with scientific, biomedical, or scholarly datasets
  • Experience with knowledge graphs, ontologies, or semantic enrichment systems
  • Exposure to production ML systems and MLOps practices
  • Publications or applied research contributions in NLP, IR, search, or generative AI
  • Experience building AI systems in regulated, high-trust, or content-rich domains

About the company

  • check_circle Search and retrieval systems
  • check_circle Generative AI and LLM applications
  • check_circle AI evaluation and experimentation
  • check_circle Semantic enrichment and knowledge systems
  • check_circle Scalable AI platforms and intelligent workflows

Tags & Focus Areas

Fulltime Ai Data Science Generative Ai

About RELX Group