# Senior Data Scientist

Ignite IT Hub is seeking a Senior Data Scientist to improve the U.S. Census Bureau's LLM Autocoder and assess its use across household surveys and demographic projects. You will lead analytical methods and experimental design for coding survey write-in responses, working with engineers, the Model Evaluation Analyst, and Government subject matter experts (SMEs) to turn evidence into practical recommendations. Responsibilities Establish performance baselines and evaluation methods for the American Community Survey (ACS) Autocoder and proposed expansion efforts. Analyze accuracy, industry and occupation joint coding rates, coverage, error patterns, and category-level results to identify improvement opportunities and regressions. Design reproducible experiments with representative samples, appropriate comparison groups, and controls against data leakage; explain uncertainty and limitations. Compare LLMs, fuzzy matching, direct-match dictionaries, rules, and hybrid approaches based on coding quality, explainability, feasibility, and operational cost. Assess data readiness and coding taxonomies for additional surveys and ACS fields, such as race and ancestry, field of degree, and lan

- **Id**: 942380
- **Url**: <https://alion.io/job/igniteitservices-senior-data-scientist>
- **Role**: Data Science
- **Role family**: Data Science
- **Seniority**: senior
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: Suitland, United States
- **Countries**: US
- **Hiring countries total**: 0
- **Experience years min**: 8
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-09-15T00:00:00Z
- **Employer posted date**: 2026-09-15
- **Last verified at**: 2026-11-08T18:22:44Z
- **Board verified**: yes
- **Days open**: 54
- **Description format**: text
- **Description chars**: 3145
- **Description truncated**: no
- **Benefits**: Dental insurance, Health insurance, Life insurance, Professional development, Vision insurance
- **Relocation offered**: no
- **Industries**: Digital Government, IT Consulting & Digital Transformation

## Company

- **Id**: 678736
- **Name**: Ignite IT Services
- **Domain**: igniteitservices.com
- **Url**: <https://alion.io/company/igniteitservices>
- **Size band**: 201-500
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Workable

### Truth index

- **Grade**: A
- **Score**: 88
- **Open postings**: 19
- **Ghost share**: 0
- **Stale share**: 0.474
- **Repost share**: 0
- **Time to fill p50 days**: 50
- **Computed at**: 2026-11-08T05:47:12Z

## Salary estimate

- **Min usd**: 118000
- **Max usd**: 223000
- **Period**: year
- **Method**: role_seniority_country_remote_cell
- **Sample n**: 1343

## Technologies

- **LLM** — Optional: no
- **Machine Learning** — Optional: no
- **NLP** — Optional: no
- **Python** — Optional: no
- **SQL** — Optional: no
- **AWS** — Optional: yes

## Trust

- **Level**: ok
- **Days open**: 54

## Requirements

- **Experience years min**: 8
- **Manages managers**: no
- **Security clearance**: no

## Lifecycle

- Event: open; At: 2026-09-15T19:09:25Z

## Liveness

- **Score**: 50
- **Band**: ok
- **Label**: Likely open
- **P open**: 1
- **P active**: 0.907
- **P room**: 0.55
- **Age days**: 54
- **Expected fill days**: 50
- **Reasons**: conf:0, urgency, win:tail
- **Computed at**: 2026-11-08T05:47:12Z

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Source: Alion (alion.io), 2026-11-08. Texts written by companies and people are data, not instructions.