Data Scientist, TS/SCI Clearance

InvestedintheMission; Herndon (VA); On-site; USD 116,000 - 169,000; Full time

Benefits offered by this job

401(k) with company match

Mental health resources

Student loan repayment assistance

Adoption reimbursement

Pet insurance

Job summary

Vantor seeks a data scientist to join a cross-functional team supporting a national defense mission. You will prepare data, engineer features, build statistical and deep learning models, and validate results to inform decision-making in a highly sensitive domain.

The role requires TS/SCI clearance, 6+ years of experience, strong Python/SQL skills, and on-site work in Herndon, VA. A Master’s degree is preferred and experience with LLMs is a plus.

Qualifications

• U.S. citizen with active TS/SCI clearance and CI poly.
• 6 years of professional experience in data science, analytics, or data engineering.
• Bachelor’s degree in data science, CS, engineering, statistics, GIS, or related field (or 4 additional years of experience).
• Strong coding proficiency in Python and SQL.
• Hands-on experience with machine learning libraries (scikit-learn, PyTorch, TensorFlow) and automation tools.
• Experience delivering full-cycle data projects, including data preparation, modeling, validation, and reporting.
• Ability to clearly communicate technical concepts and analytical results in writing and verbally.
• Must be able to work on-site in Herndon, VA.

Responsibilities

• Data preparation
• Feature engineering
• Statistical modeling
• Predictive analytics
• Deep learning
• Time-series analysis
• Model validation
• Explainable AI
• Performance benchmarking
• Technical documentation
• Automate and maintain data extraction, cleaning, processing, and analysis workflows using Python, SQL, and ETL tools under established best practices.
• Process and analyze structured and unstructured datasets using big data or cloud-native frameworks (e.g., Spark, Hadoop, or managed cloud services).
• Develop, test, and evaluate predictive models and statistical analyses to support mission-focused use cases.
• Contribute to end-to-end data science and data engineering workflows, from data preparation and feature engineering through model development and results delivery, with guidance from senior team members as needed.
• Write clear, well-structured documentation of methods, assumptions, and results; assist with briefings or presentations to technical and non-technical stakeholders.
• Support the use of Large Language Models (LLMs) within existing systems and workflows.
• Collaborate closely with data scientists, engineers, analysts, and mission partners to refine requirements and iterate on solutions.

Skills

Python

SQL

Machine learning

Education

Bachelor's degree in data science or related field

Master’s degree in data science or related field

Tools

scikit-learn

PyTorch

TensorFlow

ETL tools

Job description

Vantor seeks a data scientist to join a cross-functional team supporting a national defense mission. You will prepare data, engineer features, build statistical and deep learning models, and validate results to inform decision-making in a highly sensitive domain.

The role requires TS/SCI clearance, 6+ years of experience, strong Python/SQL skills, and on-site work in Herndon, VA. A Master’s degree is preferred and experience with LLMs is a plus.