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October 2, 2026
Principal Data Scientist
Senior
188,000 - 304,200 USD/yr
Reston, VA
Quick Facts
Role: Principal Data Scientist
Description
The Principal Data Scientist leads high-impact data science and AI initiatives with customers, transforming missions using AI and other cloud-based solutions. You oversee data acquisition and preparation, coach best practices for data cleaning and analysis, and evaluate/improve models with an emphasis on operational scale. The role also involves defining customer and solution strategy goals, maintaining deep industry knowledge, and writing extensible code with strong debugging discipline.
Responsibilities
Oversee data acquisition; ensure data is properly formatted and described
Coach engineers on data cleaning and analysis best practices; identify gaps in current data sets
Drive ethics and privacy discussions around data collection and preparation
Evaluate team models; recommend improvements and drive model best practices
Develop operational models that run at scale; review data analysis and modeling techniques
Identify and invent new evaluation methods
Research and maintain deep knowledge of industry trends and technologies to spot strategy opportunities
Write extensible code across multiple features and apply proper debugging techniques
Define business, customer, and solution strategy goals; partner with other teams to explore new opportunities
Deliver customer-oriented, pragmatic solutions aligned with customers’ data capabilities
Requirements
Doctorate in a relevant field with 5+ years of data-science experience, or Master’s with 7+, or Bachelor’s with 10+ (or equivalent experience), including managing structured and unstructured data and applying statistical techniques
Must meet security screening requirements, including an active TS/SCI clearance and willingness/eligibility to upgrade to TS/SCI (with polygraph), with ongoing maintenance of clearance
U.S. citizenship verification required
Successful clearance verification prior to offer
Must pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter
Benefits
Eligible for benefits and other compensation (role-specific)
Competitive base pay range across the U.S.; location-specific ranges apply
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