HiringCafe
Join our community

52 principal scientist jobs at 17 companies in Virginia

3mo
Save
Mark Applied
Hide
Principal Computer Scientist
Reston, Virginia, United States
OnsiteFull Time
ANSER
ANSER: Nonprofit public-service research institute providing objective national-security analysis and advice to U.S. government agencies.
20+ YOETS/SCI with Poly, Master’s in a technical field, 20+ years in data science/ML, Python/R/SQL, data visualization, DoD/IC knowledge.
Python, R, SQL, Power BI, Tableau, SPARQL, GraphQL
Job PostingView all
1w
Save
Mark Applied
Hide
Principal Scientist - Radio Frequency Plasma Heating
Devens or Virginia
$150k-$225k/yr OnsiteFull Time
Commonwealth Fusion Systems
Commonwealth Fusion Systems: Private fusion-energy developing high-temperature-superconducting tokamaks and commercial fusion power plants for electricity markets worldwide.
7+ YOEPhD in plasma physics or related field; 7+ years post-degree RF heating, current drive, or discharge cleaning experience in fusion plasmas; tokamak or stellarator experiments; finite element tools; plasma hardware development.
COMSOL, ANSYS HFSS, CST, Python
Job PostingView all
3w
Save
Mark Applied
Hide
Principal Scientist - Safety Surveillance and Risk Assessment
Richmond, Virginia, United States
$133k-$202k/yr RemoteFull Time
Altria Client Services
Altria Client Services: Altria Group service providing legal, regulatory, finance, HR, IT and support services to tobac companies.
10+ YOEPhD in toxicology or related field and 10+ years in toxicology, including pharmacovigilance or adverse experience management. Requires regulatory toxicology, risk assessment, data synthesis, submissions, communication, and leadership skills.
QSAR
Job PostingView all
1mo
Save
Mark Applied
Hide
Principal Scientist- Search
New York City or San Francisco or Los Angeles or Irvine or McLean or Washington
$212k-$394k/yr HybridFull Time
Thomson Reuters
Thomson ReutersTSX, NASDAQ: TRI: Global provider of trusted information, software, and news.
8+ YOEPhD and 8+ years building and deploying production AI systems; deep expertise in information retrieval, search, NLP, RAG, knowledge graphs, LLMs; strong product sense and leadership skills.
Python, PyTorch, Hugging Face, Azure ML, Azure AI Foundry, AWS SageMaker
Job PostingView all
3w
Save
Mark Applied
Hide
Principal Data Scientist
North Carolina or Mississippi or Louisiana or South Carolina or Kentucky or Kansas or Iowa or Indiana or Arkansas or Texas or Durham or Georgia or Virginia or Tennessee or Pennsylvania or Michigan or Wyoming or Wisconsin or Idaho or Utah or Florida or South Dakota or Oklahoma or Ohio or Arizona or Missouri or Alabama or Colorado or Maryland
$144k-$230k/yr RemoteFull Time
Blue Cross and Blue Shield of North Carolina
Blue Cross and Blue Shield of North Carolina: Not-for-profit North Carolina health insurer providing health plans to members, employers, and government programs.
8+ YOEBachelor's or advanced degree and 8+ years of related experience, or 10+ years without a degree. Requires advanced data science, healthcare, Payment Integrity/FWA, Snowflake, Python, R, SQL, and AI agent experience.
Snowflake, Python, R, SQL, Big Data, Machine Learning (ML)
Job PostingView all
2d
Save
Mark Applied
Hide
Principal Data Scientist
McLean or Tysons
$97k-$184k/yr HybridFull Time
PenFed Credit Union
PenFed Credit Union: Member-owned, not-for-profit federal credit union providing banking, lending, and investment services to members worldwide.
8+ YOEMaster’s degree in a quantitative discipline, 8+ years building statistical models and conducting advanced data analysis, and experience with regression, machine learning, survival analysis, SQL, Python, and R.
Logistic Regression, Linear Regression, Machine Learning, Survival Analysis, SQL, Python, R, Artificial Intelligence (A.I.)
Job PostingView all
3w
Save
Mark Applied
Hide
Principal Regulatory Scientist
Reston, Virginia, United States
$116k-$181k/yr OnsiteFull Time
Noblis
Noblis: Nonprofit science, technology, and strategy organization for government missions.
4+ YOEDoctorate in a relevant scientific discipline with ≥4 years experience (or master’s with ≥6 years); demonstrated FDA regulatory experience; strong writing, communication, analytical skills; US citizenship and active secret clearance required.
Job PostingView all
1w
Save
Mark Applied
Hide
Data Scientist Principal
Chantilly, Virginia, United States
OnsiteFull Time
SAIC
SAICNASDAQ: SAIC: Premier technology integrator for defense, space, and civilian markets.
5+ YOEBachelor’s plus 9 years, master’s plus 7, or doctorate/JD plus 4; equivalent experience accepted. Requires 5+ years in software engineering, data analytics, machine learning, statistics, and active Top Secret/SCI with Poly.
Microsoft Office, Artificial intelligence (AI), Machine learning (ML)
Job PostingView all
1mo
Save
Mark Applied
Hide
Principal Data Scientist
Glen Allen, Virginia, United States
$200k-$300k/yr OnsiteFull Time
W.R. Berkley Corporation
W.R. Berkley CorporationNYSE: WRB: Global commercial lines insurance holding.
10+ YOE10+ years building and shipping production ML/AI systems; expert Python and ML engineering; experience with LLMs, MLOps, causal inference, and statistical methods; Bachelor's in quantitative field required; advanced degree preferred.
Python, NumPy, Pandas, Scikit-learn, PyTorch, TensorFlow, Hugging Face, LangChain, LlamaIndex, MLflow, Docker, Kubernetes, SQL, dbt, Spark, Databricks, Azure ML, AWS SageMaker, GCP Vertex AI, SHAP, LIME, Git
Job PostingView all
2w
Save
Mark Applied
Hide
Principal Data Scientist
Amelia or Cary or Evansville or Chillicothe or Chesapeake or Durham or Berea or Columbus or Clarksville or Boca Raton or Indianapolis or Buffalo or Charleston or Dayton or Athens or Knoxville or Clearwater or Chicago or Arlington or Cleveland or Gaylord or Carmel or Ann Arbor or Bloomington or Cincinnati or Bremen or Charlotte or Circleville or Birmingham or Chattanooga
HybridFull Time
American Modern Insurance Group
American Modern Insurance Group: American Modern is a private specialty insurer serving residential-property and recreational-vehicle owners across the United States.
6+ YOEFCAS and a master's degree required; 6+ years of insurance data science or 8+ years of predictive modeling experience. Requires R, Python, GLMs, GBMs, machine learning, and project management.
R, Python, Databricks, Scrum, Kanban, Microsoft Excel
Job PostingView all
2mo
Save
Mark Applied
Hide
Senior Principal Data Scientist - AI Lead (R-19518)
Vienna, Virginia, United States
HybridFull Time
Dun & Bradstreet
Dun & Bradstreet: Provides business decisioning data and analytics.
10+ YOE10+ years data science/ML experience, AI/ML and NLP expertise, leadership experience, proven AI solution delivery for public sector, proficiency in Python/Java/Go and cloud platforms (AWS/Azure/GCP), Bachelor's required, Advanced degree preferred.
Python, Java, Go, AWS, Azure, GCP
Job PostingView all
2w
Save
Mark Applied
Hide
Principal Applied Scientist - TS/SCI
Herndon, Virginia, United States
$140k-$206k/yr OnsiteFull Time
Vantor
Vantor: Forging the new frontier of spatial intelligence.
12+ YOEU.S. citizen with active TS/SCI clearance and ability to obtain CI polygraph; 12+ years’ experience; master's or PhD; modeling, statistics, physics-based modeling, Python, scientific computing, and AI/ML experience.
Python, scientific computing libraries, AI/ML
Job PostingView all
3d
Save
Mark Applied
Hide
Principal, Data Scientist - Card Intelligence
McLean or New York City
$162k-$201k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: A technology-driven bank providing diverse financial services.
5+ YOEQuantitative bachelor's degree plus 5 years, master's or quantitative MBA plus 3 years, or PhD; experience with data analytics, machine learning, and Python, Scala, R, or SQL preferred.
Python, Conda, AWS, H2O, Spark, Scala, R, SQL
Job PostingView all
2mo
Save
Mark Applied
Hide
Principal, Data Scientist - Card Intelligence
McLean or New York or United States or Canada or United Kingdom or Philippines
$162k-$201k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: A technology-driven bank providing diverse financial services.
3+ YOEBachelor's (plus 5 yrs), Master's (plus 3 yrs), or PhD in a quantitative field; 3+ years experience with Python/Scala/R, SQL, and machine learning preferred; experience with AWS, Conda, H2O, Spark; strong communication and statistical skills.
Python, Conda, AWS, H2O, Spark, SQL, Scala, R
Job PostingView all
1w
Save
Mark Applied
Hide
Principal AI/ML Data Scientist (Systems Architecture, Senior Associate)
Reston, Virginia, United States
$190k-$245k/yr OnsiteFull Time
The MIL Corporation
The MIL Corporation: Private U.S. government-services contractor providing federal agencies cyber, engineering, financial, and information-technology services.
20+ YOE20+ years in software, data engineering, distributed systems, cloud architecture, or AI/ML platforms; expert Python and SQL; enterprise AI architecture experience; bachelor's degree or equivalent experience; Top Secret/SCI with CI Polygraph clearance.
Python, SQL, Azure, AWS, Google Cloud, MLOps, CI/CD, vector databases, Retrieval-Augmented Generation, RAG, Agentic AI, large language model, LLM
Job PostingView all
2w
Save
Mark Applied
Hide
Data Scientist, Principal - AI Product Engineering
Oakland or Washington or Ohio or District of Columbia or California or Long Beach or Arizona or Colorado or Connecticut or Florida or Georgia or Maryland or Minnesota or Nevada or Oregon or El Dorado Hills or San Diego or Woodland Hills or Alabama or Illinois or Virginia or Wisconsin or Texas or New York
$161k-$242k/yr HybridFull Time
Stellarus
Stellarus: Nonprofit California health plan providing insurance coverage to individuals, families, employers, and public-program members.
10+ YOEBachelor's degree or equivalent practical experience and 10 years in data science, machine learning, AI/ML, software engineering, or advanced analytics. Requires Python, APIs, ML infrastructure, PyTorch, TensorFlow, LangChain, and LangGraph.
Python, PyTorch, TensorFlow, LangChain, LangGraph, Azure, Google Cloud, AWS, SQL, Spark, CI/CD, MLOps, LLMOps
Job PostingView all
4w
Save
Mark Applied
Hide
Senior Principal Data Scientist (Marketing Channel Optimization)
Vienna, Virginia, United States
$150k-$206k/yr HybridFull Time
Navy Federal Credit Union
Navy Federal Credit Union: Member-owned, not-for-profit credit union providing banking, lending, and investment services to servicemembers, veterans, DoD personnel, and families.
10+ YOE10+ years experience; advanced degree in quantitative field; expertise in statistics, machine learning, modeling, coding, and data storytelling; proficiency with SQL,R,Python,Hadoop,SAS,SPSS,Scala,AWS; strong communication and mentoring skills.
SQL, R, Python, Hadoop, SAS, SPSS, Scala, AWS
Job PostingView all
1mo
Save
Mark Applied
Hide
Staff Principal Scientist/Senior Economic Security Analyst
Alexandria, Virginia, United States
$160k-$180k/yr HybridFull Time
AMERICAN SYSTEMS
AMERICAN SYSTEMS: Government services contractor delivering IT and engineering solutions.
10+ YOEBachelor's degree with ~10 years relevant experience, US citizenship, Top-Secret/SCI eligibility; expertise in export controls, S&T research, or data science/AI; proficiency with R, SQL, git, and Microsoft Office; strong writing and negotiation skills.
R, SQL, git, Microsoft Word, Microsoft PowerPoint, Microsoft Excel, AI APIs, LLM platforms
Job PostingView all

Explore Jobs

Expand Your Job Search