Senior Model Evaluation Analyst

Ignite IT Hub is seeking a senior Model Evaluation Analyst to assess the accuracy and reliability of the U.S. Census Bureau's LLM Autocoder. You will maintain evaluation datasets, run comparisons, investigate coding errors, and produce evidence for Government review. Working with the contract’s Data Scientist and Government subject matter experts (SMEs), you will evaluate enhancements for the American Community Survey (ACS) and expansion to other surveys and fields.

Responsibilities

• Prepare and maintain versioned evaluation datasets, reference labels, and test cases with documented provenance and representative coverage of coding categories.

• Execute evaluation methods established with the Senior Data Scientist and calculate accuracy, joint coding rates, coverage, and results against agreed error thresholds.

• Compare candidate models and coding methods with approved baselines; identify material category-level regressions that aggregate results may conceal.

• Analyze difficult, ambiguous, and underrepresented cases; assemble examples for SME adjudication and track decisions and label corrections.

• Develop repeatable Python or SQL analyses and evaluation checks, preserving the data, code, prompt, model, and configuration versions behind each result.

• Maintain test evidence, review-comment disposition, and traceability from requirements and acceptance criteria to evaluated results and deliverables.

• Prepare clear performa