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Senior Data Scientist

Suitland, Maryland, United States💼 Full-time🗓 2026-09-15 → 2026-09-25

Core

Lead analytical methods and experimental design to improve the U.S. Census Bureau's LLM Autocoder for coding survey write-in responses.

Role type

Senior IC data scientist (NLP & LLM evaluation)

Builds

Evaluation frameworks and coding methods for the American Community Survey (ACS) Autocoder

Domain

Federal statistics / NLP / Text classification

Deliverable

production ML models

Required skills

Python, SQL, NLP, text classification, LLM application, experimental design, model evaluation, statistical analysis, error analysis, sampling, class imbalance handling

Preferred skills

Advanced degree, survey data experience, industry/occupation coding taxonomies, AWS analytical workflows, federal statistical environments

Technologies

Python, SQL, LLMs, fuzzy matching, dictionaries, rules

Responsibilities

Establish performance baselines and evaluation methods for the ACS Autocoder; Analyze accuracy, coding rates, coverage, and error patterns; Design reproducible experiments with appropriate controls; Compare LLMs and hybrid approaches based on quality and cost; Assess data readiness and coding taxonomies for additional surveys; Guide engineers on prompt and model configuration changes; Interpret results and document technical guidance

Seniority

Senior, hands-on IC

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