Senior Data Scientist II: Generative AI & Production ML

relx; Raleigh (NC); On-site; USD 120,000 - 170,000; Full time

Job summary

LexisNexis Legal & Professional is seeking a Senior Data Scientist II with deep expertise in Generative AI, retrieval systems, and production-grade ML. You will design, refactor, test, deploy, and support Python applications, focusing on LLM-powered drafting, retrieval, and agentic workflows.

Ideal candidates have strong Python proficiency, experience with OpenSearch or Solr, and a track record in monorepo environments, cross-functional delivery, and reliable production deployments.

Qualifications

• Advanced Python proficiency demonstrated in production applications.
• Strong fundamentals in data structures, algorithms, and design principles.
• Experience implementing automated unit, integration, and end-to-end tests with pytest.
• Experience designing resilient distributed applications with timeouts, retries, and graceful degradation.

Responsibilities

• Architect modular agentic applications with clear separation among retrieval, prompt construction, model invocation, tool execution, state and history management, orchestration, validation, and response formatting.
• Refactor complex or legacy Python code to improve correctness, readability, and testability.
• Own production readiness for AI components including input validation, exception handling, and secure credential handling.
• Establish observability for LLM and retrieval workflows through structured logging and metrics.
• Design interfaces and data contracts between retrieval, orchestration, model, and downstream components.
• Write comprehensive tests including failure modes and unavailable dependencies.
• Review code and provide actionable feedback aligned with production standards.
• Diagnose and optimize latency, memory usage, and model cost for scalability.

Skills

Advanced Python

Python fundamentals

Code refactoring

Tools

OpenSearch

Solr

pytest

Monorepos

Job description

LexisNexis Legal & Professional is seeking a Senior Data Scientist II with deep expertise in Generative AI, retrieval systems, and production-grade ML. You will design, refactor, test, deploy, and support Python applications, focusing on LLM-powered drafting, retrieval, and agentic workflows.

Ideal candidates have strong Python proficiency, experience with OpenSearch or Solr, and a track record in monorepo environments, cross-functional delivery, and reliable production deployments.