Principal Data Scientist I

LexisNexis; Raleigh (NC); On-site; USD 118,300 - 219,800; Full time

Job summary

LexisNexis is seeking a senior Data Scientist to advance AI-driven analytics. You will lead complex projects, guide teams, and ensure governance while collaborating with senior stakeholders.

The role emphasizes building scalable GenAI systems, LLMs, RAG techniques, and trusted AI workflows in a fast-paced environment. You will mentor colleagues, drive model quality, and influence customer-facing outcomes with strong communication and leadership skills.

Qualifications

• Experience leading analytics projects and teams.
• Strong communication with senior stakeholders.
• Mentoring or training others and guiding colleagues.
• Experience in Data Scientist role and leading complex projects.

Responsibilities

• Acting as a leader for analytic project and result sharing.
• Leading code reviews, final approver of models before reaching customers.
• Evaluating and creating new frameworks and defining methodologies and governance.
• Managing and leading small-to-medium sized teams, directly or indirectly.
• Setting a high-bar for model development.

Skills

LLM development

RAG systems

Knowledge graphs

GenAI architecture

Model governance

Mentoring / leadership

Stakeholder communication

Tools

Python

TensorFlow/PyTorch

GPU acceleration

Job description

Are you looking to develop your Data Scientist career?

Would you like to be part of a team that innovates using technology?

Responsibilities

• Acting as a leader for analytic project and result sharing


• Leading code reviews, acting as a final approver of models before reaching customers


• Evaluating and creating new frameworks and defining methodologies and governance


• Managing and leading small-to-medium sized teams, directly or indirectly


• Setting a high-bar for model development

Requirements

• Large language models (prompting, fine-tuning, adaptation), LLM


• Advanced retrieval-augmented generation (hybrid search, ranking optimization), RAG


• Embedding strategies and semantic search systems


• Knowledge graph integration and graph-enhanced intelligence


• Agentic AI architecture, multi-step reasoning, autonomous agent orchestration, and long-running agent design with feedback loops, GenAI


• Evaluation science (offline metrics, human-in-the-loop systems)


• Cost-performance optimization


• AI observability and monitoring in production


• Data governance and compliance-aware system design


• Have excellent communication skills and the ability to convey information clearly to senior stakeholders


• Be a natural problem-solver and able to take a lead in collaborating to resolve issues


• Have experience in mentoring or training others, and acting as a subject matter expert to guide colleagues


• Have some management experience, including leading a team indirectly or directly


• Have significant experience in a Data Scientist role


• Have experience in leading complex projects and customer relationships

U.S. National Base Pay Range: $118,300 - $219,800. Geographic differentials may apply in some locations to better reflect local market rates. This job is eligible for an annual incentive bonus.