Senior Data Scientist — AI/NLP & RAG for Discovery

RELX INC; Ciudad de México; Hybrid; MXN 1,959,000 - 3,264,000; Full time

Benefits offered by this job

Parental leave

Study assistance

Sabbaticals

Flexible hours

Job summary

RELX INC is seeking a Senior Data Scientist to design and deliver advanced AI, NLP, and generative AI solutions that power knowledge discovery and decision support. You will work with complex scientific data, applying modern machine learning and LLM-based approaches to build scalable, production-ready systems with real user impact.

You will collaborate across teams to turn complex challenges into practical solutions, mentoring others and ensuring quality and reliability in production workflows.

Qualifications

• Practical experience in data science, AI, machine learning, NLP, information retrieval, or a related quantitative field.
• Strong hands‑on experience building AI/ML, NLP, generative AI, and retrieval-based systems in applied or product-focused environments.
• Expertise working with LLMs, including fine-tuning, prompt engineering, grounding strategies, and responsible AI practices.
• Strong Python skills and solid machine learning fundamentals.
• Experience with large-scale text or content-rich datasets and modern AI/ML frameworks.
• Experience with RAG, semantic, vector, or hybrid search, and evaluation approaches measuring user impact.
• Familiarity with cloud platforms and modern software engineering practices.
• Strong communication, collaboration, and mentoring skills.

Responsibilities

• Design, build, and evaluate advanced AI/ML, NLP, and generative AI solutions for scientific and knowledge-discovery applications.
• Develop LLM-powered workflows and retrieval-augmented generation (RAG) systems for search, summarization, question answering, and evidence-grounded insight generation.
• Build intelligent retrieval, ranking, recommendation, and decision-support capabilities using modern orchestration frameworks and AI techniques.
• Integrate scientific metadata, ontologies, taxonomies, and knowledge assets into scalable AI workflows.
• Establish robust evaluation, experimentation, and monitoring frameworks to ensure quality, trust, performance, and reliability.
• Write production-ready Python code and partner with engineering teams to deploy solutions at scale.
• Provide technical leadership and mentoring to support high-quality delivery and continuous improvement.

Skills

Data science

AI/ML

NLP

Information retrieval

Python

LLMs

Tools

Python

Job description

RELX INC is seeking a Senior Data Scientist to design and deliver advanced AI, NLP, and generative AI solutions that power knowledge discovery and decision support. You will work with complex scientific data, applying modern machine learning and LLM-based approaches to build scalable, production-ready systems with real user impact.

You will collaborate across teams to turn complex challenges into practical solutions, mentoring others and ensuring quality and reliability in production workflows.