1,119 scientist jobs at 345 companies in McLean, VA
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Senior Decision Scientist
Washington or Reston
OnsiteFull Time
BigBear.aiNYSE: BBAI: Provides AI-powered decision intelligence software for national security.
12+ YOEBachelor's degree, Active Top Secret/SCI clearance, 12 years as decision scientist/analytic methodologist/data scientist; master's and IC/DoD experience preferred.
The Bison Group: Provides intelligence and technology services for national security missions.
4+ YOE4+ years as a data scientist, strong statistical modeling and ML using Python/R, AWS experience, SQL proficiency, BSA/AML domain knowledge, Top Secret clearance.
NS2 Mission: Delivers secure data management and analytics for national security.
5+ YOESenior-level data scientist with 5+ years experience supporting Intelligence Community missions; Python and analytics expertise; TS/SCI with FSP required; strong statistical, ML, and visualization skills.
SAICNYSE: SAIC: Provides engineering, IT, and mission support services to government.
4+ YOENLP-focused data scientist with advanced Python and SQL skills, experience with deep learning and transformers, TS/SCI with polygraph required, multiple years of relevant experience per degree level.
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
Mid-level data scientist with experience in analytics, ML, and geospatial/multi-INT data; TS/SCI clearance with willingness for polygraph; HS diploma or GED.
RealmOne: Provides advanced technology services for national security agencies.
10+ YOESenior Data Scientist with 10+ years of relevant experience in data engineering, ML, data management, and government data analysis; BS required, advanced degree preferred or related certifications.
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
Mid-level data scientist with experience building and deploying AI/ML models for geospatial/multi‑INT data, proficiency in Python and SQL, experience with distributed/mission data, ability to produce analytic CONOPs and travel up to 25%.
Ascension Federal Services: A government contractor delivering data-driven solutions.
10+ YOESenior data scientist with 10+ years of experience, proficiency in Python/R/Java, ML and data visualization; strong communication and problem-solving skills.
Gormat: Provides cybersecurity and systems engineering services to government defense agencies
8+ YOESenior data scientist with extensive experience designing and building data pipelines for enterprise AI, strong database and cloud skills, and leadership in complex projects.
Guidehouse: Provides management and technology consulting services to diverse organizations.
1+ YOEPhD (or MS + experience) in biology or related discipline, experience in bio-separation technologies (HPLC, capillary methods), 1+ year lab research (PhD route) or 4+ years (MS route), proficiency with Microsoft Office, ability to obtain Public Trust.
HPLC, electrophoretic techniques, capillary-based methods, Microsoft Office
Axle Informatics: Provides bioscience and IT solutions for biomedical research.
8+ YOEPhD in bioengineering/chemical engineering/biochemistry,8+ years recombinant protein purification development for GMP clinical-phase products,record keeping,team collaboration,oral and written communication.
Global Solutions Network: Provides professional and technical services to US federal agencies
Master's in Neuroscience or related field required; BSL-2 lab experience; proficiency with MS Office; experience in manuscript writing, SOPs, molecular biology techniques, cell culture, and bioinformatics/statistical analysis; mentoring and protocol development experience.
MS Office Suite, Microsoft PowerPoint, Microsoft Excel, Microsoft Word
Tukwila or Remote, Texas or Remote, California or Remote, Idaho or Remote, South Carolina or Remote, Oregon or Remote, Virginia or Remote, North Carolina or Remote, Georgia or Remote, Arizona
$91k-$169k/yrHybridFull Time
BECU: Provides banking and financial services to its members.
5+ YOESenior data scientist role focusing on marketing analytics; 5+ years in data science; strong business-facing analytics; Python, R, SQL proficiency.
XometryNASDAQ: XMTR: Operates an AI-powered marketplace for custom manufacturing and prototyping.
6+ YOESenior data scientist with 6–8 years experience in data analytics, statistics, experimentation, and product analytics; strong SQL; Python and Looker desirable; experience in product-driven environments.
Systems & Technology Research: Develops advanced technology for national security and defense applications.
3+ YOESenior scientist with 3-5+ years in physics/engineering; degree in physics, applied math, or electrical engineering; proficiency in MATLAB/Python/C/C++; security clearance eligibility; strong communication.
Atlanta or Naperville or Rockville or King of Prussia or Chattanooga or Arlington
$75k-$197k/yrOnsiteFull Time
Nuclear Regulatory Commission: Regulates civilian use of nuclear energy and radioactive materials.
Direct Hire Data Scientist role requiring specialized experience in data mining/analysis, modeling, and AI, with multiple locations and security requirements.
RenXTech: Technical and analytical support for national security missions.
Expert-level data scientist with NLP, Python, ML/DL, SQL, NLP libraries (Spacy, Gensim, NLTK), Transformers/HuggingFace, PyTorch/TensorFlow/Keras, GPUs, and ability to communicate results to leadership.