Senior GenAI & Retrieval Data Scientist | Flexible Hours

LexisNexis Legal & Professional group; United States; A distancia; USD 76.000 - 111.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Flexible hours

Shared parental leave

Study assistance

Sabbaticals

Descripción de la vacante

LexisNexis Legal & Professional is seeking a Senior Data Scientist II to advance generative AI, retrieval-augmented generation, and agentic AI systems. You will own Python production apps, ensure reliability, logging, monitoring, and secure handling of credentials, while improving LLM-powered drafting and retrieval solutions with advanced search and embeddings.

The ideal candidate will have advanced Python, OpenSearch/Solr experience, monorepo work, and a track record of cross-functional

Formación

• Advanced Python and software design fundamentals.
• Experience turning prototypes into maintainable production systems.
• Strong knowledge of modular, observable architectures for AI applications.
• Experience with automated testing (pytest) and mocking external services.

Responsabilidades

• Architect modular agentic applications with clear separation of concerns (retrieval, prompt construction, model invocation, tool execution).
• Independently refactor complex Python code for correctness, readability, and performance.
• Own production readiness of AI components including validation, timeouts, retries, and secure credential handling.
• Establish observability for LLM/retrieval workflows via logging, metrics, tracing, and alerting.
• Design interfaces and data contracts between retrieval, orchestration, model, and downstream components.
• Write comprehensive tests (unit, integration, regression, end-to-end) for failure modes and unavailable dependencies.
• Review code to identify architectural risks and provide actionable feedback.
• Diagnose latency, memory usage, retrieval performance, token costs, and scalability.
• Apply data structures and algorithms optimizing computational complexity.

Conocimientos

Python

OpenSearch

Monorepo

Testing & CI

Observability

Code reviews

Production ownership

LLM reasoning

Performance optimization

Herramientas

pytest

ruff

mypy

Pydantic

CI tools

OpenSearch

Descripción del empleo

LexisNexis Legal & Professional is seeking a Senior Data Scientist II to advance generative AI, retrieval-augmented generation, and agentic AI systems. You will own Python production apps, ensure reliability, logging, monitoring, and secure handling of credentials, while improving LLM-powered drafting and retrieval solutions with advanced search and embeddings.

The ideal candidate will have advanced Python, OpenSearch/Solr experience, monorepo work, and a track record of cross-functional