Data Scientist - Mission-Critical Analytics & Validation

Castalia Systems; Chantilly (VA); On-site; USD 180,000 - 190,000; Full time

Benefits offered by this job

Medical coverage

Dental coverage

Vision coverage

401k matching

Generous PTO

Paid holidays

Professional training opportunities

Pet insurance

Job summary

Castalia Systems is seeking a Mid-level Data Scientist to support a client onsite in Chantilly, VA. This role analyzes complex datasets, validates analytic models, and collaborates with government and engineering teams to improve advanced analytics for national security missions.

The ideal candidate holds a quantitative Bachelor's (Master's preferred) and has 6+ years in data science, with proficiency in Python or R and experience evaluating ML models in a classified environment.

Qualifications

• Bachelor's degree in Data Science, Computer Science, Statistics, Mathematics, Engineering, Operations Research, or a related quantitative field.
• 6+ years of experience in data science, advanced analytics, machine learning, algorithm evaluation, or a related technical discipline.
• Experience evaluating, validating, testing, or improving statistical models, machine learning algorithms, or analytic methodologies.

Responsibilities

• Review, assess, and provide recommendations for improving existing statistical models, machine learning algorithms, and analytic workflows supporting Space and Counterspace missions.
• Evaluate algorithm performance, accuracy, scalability, and operational effectiveness against mission requirements and customer objectives.
• Analyze large, complex datasets from multiple intelligence and operational sources to identify trends, anomalies, and opportunities for analytic enhancement.
• Conduct validation and verification activities to ensure analytic models and algorithms produce reliable and reproducible results.
• Assess data quality, source integrity, and data management practices that impact algorithm performance and analytic outcomes.
• Develop technical assessments, recommendations, and briefing materials to support government decision-making and capability improvements.
• Support the integration and evaluation of new data sources, analytic techniques, and modeling approaches within existing mission systems.
• Collaborate with government stakeholders, engineers, and data science teams to prioritize improvements and implement approved changes.
• Document methodologies, evaluation criteria, findings, and recommendations to support governance, oversight, and mission continuity.
• Ensure compliance with security, data governance, and classified environment requirements throughout all analytical activities.

Skills

Data science

Machine learning

Model evaluation

Python

R

Statistical analysis

Education

Bachelor's degree in Data Science, Computer Science, Statistics, Mathematics, Engineering, Operations Research, or a related quantitative field

Master's degree (preferred)

Job description

Castalia Systems is seeking a Mid-level Data Scientist to support a client onsite in Chantilly, VA. This role analyzes complex datasets, validates analytic models, and collaborates with government and engineering teams to improve advanced analytics for national security missions.

The ideal candidate holds a quantitative Bachelor's (Master's preferred) and has 6+ years in data science, with proficiency in Python or R and experience evaluating ML models in a classified environment.