Principal Data Scientist I

LexisNexis Legal & Professional group; Raleigh (NC); On-site; USD 118,000 - 220,000; Full time

Job summary

LexisNexis Legal & Professional group is seeking a Principal Data Scientist I to lead analytic projects and shape model governance. You will review code, validate models before customer delivery, and drive framework development while mentoring teams and steering complex initiatives.

The role emphasizes leadership of data science teams, engagement with senior stakeholders, and delivering high-quality, compliant AI solutions in a Raleigh, NC context.

Qualifications

• Experience with large language models including prompting and fine-tuning.
• Expertise in retrieval-augmented generation and semantic search systems.
• Knowledge graph integration and graph-enhanced intelligence.
• Agentic AI architecture, multi-step reasoning and orchestration.
• Strong evaluation science, offline metrics, human-in-the-loop systems.
• Cost-performance optimization and AI observability in production.
• Data governance and compliance-aware system design.

Responsibilities

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

Skills

Large language models

Retrieval-augmented generation

Embedding strategies

Semantic search

Knowledge graph

Agentic AI

Multi-step reasoning

Autonomous agent orchestration

Long-running agent design

GenAI

Evaluation science

Cost-performance optimization

AI observability

Data governance

Communication to senior stakeholders

Mentoring or training others

People leadership

Leadership of complex projects

Job description

Principal Data Scientist I

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.

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