Senior AI Scientist (NLP/Gen AI) - Flexible Hours

RELX; Philadelphia (Philadelphia County); Hybrid; MXN 1,952,000 - 3,259,000; Full time

Job summary

Elsevier is seeking a Senior Data Scientist to design advanced AI, NLP, and generative AI solutions for knowledge discovery and decision support across scientific data. You will build production-ready models and collaborate with cross-functional teams to deliver scalable, reliable AI workflows.

The role emphasizes hands-on ML, LLM tuning, and responsible AI practices, with opportunities to mentor others and influence product outcomes in a global organization.

Qualifications

• Practical experience in data science, AI, ML, 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 with LLMs, including fine-tuning, prompt engineering, grounding strategies, and responsible AI practices.

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

NLP

Information retrieval

LLMs

Python

Cloud platforms

Tools

Python

PyTorch

TensorFlow

AWS

Job description

Elsevier is seeking a Senior Data Scientist to design advanced AI, NLP, and generative AI solutions for knowledge discovery and decision support across scientific data. You will build production-ready models and collaborate with cross-functional teams to deliver scalable, reliable AI workflows.

The role emphasizes hands-on ML, LLM tuning, and responsible AI practices, with opportunities to mentor others and influence product outcomes in a global organization.