Senior Data Scientist I - LeapSpace

RX Brasil; City Of London; On-site; GBP 90,000 - 140,000; Full time

Benefits offered by this job

Country specific benefits

Flexible working hours

Job summary

Elsevier’s Platform Data Science team in London is seeking a Senior Data Scientist I to design, build, and evaluate advanced AI capabilities powering LeapSpace and related products. You will prototype AI workflows, integrate LLMs with scientific data, and help shape AI-powered discovery.

You will collaborate across retrieval, generative AI, and evaluation frameworks, applying NLP, embeddings, RAG, and knowledge graphs to deliver high-trust research aids and scalable, production-ready solutions.

Qualifications

• Experience in applied AI, NLP and information retrieval.
• Hands-on with LLMs, RAG pipelines and retrieval systems.
• Strong programming skills in Python and ML frameworks.

Responsibilities

• Prototype AI workflows and evaluate LLM-powered research tools.
• Develop retrieval-augmented generation and semantic systems.
• Collaborate with engineering to productionize AI capabilities.

Skills

LLM-based applications

RAG pipelines

Search architectures

Python

PyTorch

Hugging Face

LangChain

LangGraph

Haystack

Databricks

MLOps

Experiment design

Data visualization

Education

Master's or PhD in CS / Data Science

Tools

PyTorch

Hugging Face

LangChain

LangGraph

Haystack

Databricks

Job description

About the team:

Elsevier’s mission is to help researchers, clinicians, and life sciences professionals advance discovery and improve health outcomes through trusted content, data, and analytics. This role sits within Elsevier’s Platform Data Science organization, a centralized AI and data science group responsible for advancing intelligent discovery, retrieval, and generative AI capabilities across Elsevier products and platforms. The organization develops foundational AI technologies that power experiences such as LeapSpace, Elsevier’s AI‑powered research assistant, as well as Elsevier’s broader Search & AI Platform. The Platform Data Science organization works at the intersection of: Search and retrieval systems, Generative AI and LLM applications, AI evaluation and experimentation, Semantic enrichment and knowledge systems, Scalable AI platforms and intelligent workflows.

About the role:

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:

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

Requirements:

Master’s or PhD in Computer Science, Data Science, Machine Learning, NLP, Information Retrieval, or a related field Significant 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 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.

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.

Why join us?

Join our team and contribute to a culture of innovation, collaboration, and excellence.

Work in a way that works for you

• We promote a healthy work/life balance across the organization.
• We offer an appealing working prospect for our people.
• With numerous wellbeing initiatives, shared parental leave, study assistance and sabbaticals, we will help you meet your immediate responsibilities and your long‑term goals.
• Flexible working hours - flexing the times when you work in the day to help you fit everything in and work when you are the most productive.
• We are delighted to offer country specific benefits.

About the business:

As a global leader in information and analytics, we help researchers and healthcare professionals advance science and improve health outcomes for the benefit of society. Building on our publishing heritage, we combine quality information and vast data sets with analytics to support visionary science and research, health education, and interactive learning, as well as exceptional healthcare and clinical practice. At Elsevier, your work contributes to the world’s grand challenges and a more sustainable future. We harness innovative technologies to support science and healthcare to partner for a better world. 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 Form or please contact 1-855-833-5120. 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. USA Job Seekers: EEO Know Your Rights. Elsevier is a global leader in advanced information and decision support for science and healthcare. We believe that by working together with the communities we serve, we can shape human progress to go further, happen faster, and benefit all. We support continuous discovery and uphold the highest standards of content integrity, reliability, and reproducibility so the communities we serve can advance their field of science, healthcare or innovation with confidence. By combining high‑quality content with powerful analytics, we transform complexity into clarity and deliver mission‑critical insights that help professionals make better decisions when it matters most. We deliver insights that help research institutions, governments, and funders achieve their goals. We help researchers discover and share knowledge, collaborate, and accelerate innovation. We help librarians provide verified, quality information to universities. We help innovators turn knowledge into new products. We help health professionals improve patient care and educators train the next generation of doctors and nurses. Connecting quality content and innovative technologies, we make progress go further and happen faster. And by championing inclusion and sustainability, we ensure progress benefits all. With 9,500 employees, over 2,300 technologists in 5 major tech hubs, and more than 60 locations across the globe, we are committed to supporting the scientific and healthcare communities around the world. We offer a diverse range of opportunities across technology, commercial, business, and early career jobs. If you are looking for a career that inspires progress in science, innovation and health, and allows you to grow every day, find your team at Elsevier. Elsevier is part of RELX Group. Let’s shape progress together.