719 senior scientist jobs at 235 companies in Westminster, MD
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Senior Data Scientist
Annapolis Junction, Maryland, United States
$168k-$183k/yr OnsiteFull Time
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.
Python, Java, Scala, Neo4j, PostgreSQL, MySQL, MongoDB, Cassandra, AWS, Microsoft Azure
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Senior Data Scientist
Fort Meade, Maryland, United States
OnsiteFull Time
10+ YOESenior data scientist with 10+ years of experience, proficiency in Python/R/Java, ML and data visualization; strong communication and problem-solving skills.
Python, R, Java, Power BI, Tableau
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Senior Scientist
Arlington, Virginia, United States
OnsiteFull Time
15+ YOEMaster's degree; active DoD Secret clearance (ability to obtain one); 15+ years of experience; senior leadership in technical R&D; proven ability to independently analyze and advise on DARPA-related programs.
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Senior Cryptocurrency Intelligence Scientist
Washington, District of Columbia, United States
HybridFull Time
Senior data scientist with strong SQL and Python, deep blockchain expertise, OSINT familiarity, AI fluency for analytics, intelligence tradecraft, strong communication, and ability to obtain security clearance.
SQL, Python
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Senior Data Scientist, Product Analytics
North Bethesda or Waltham
$140k-$160k/yr HybridFull Time
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.
SQL, Python, Looker
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Senior Research Scientist - Advanced Systems
College Park, Maryland, United States
$176k-$282k/yr OnsiteFull Time
12+ YOESenior research/engineering role requiring 12+ years with a Bachelors or 10+ with a Masters or 8+ with a PhD in a technical field; strong software prototype development and DevOps experience; US citizenship and TS/SCI with Polygraph.
Programming languages: Python, C, C++, Java, Go, CI/CD tools: Jenkins, GitHub Actions, GitLab CI, DevOps tools: Ansible, Terraform/OpenTofu, Databases and data technologies: PostgreSQL, MongoDB, Elasticsearch/OpenSearch, Redis, Kafka, Containerization: Docker, Kubernetes, Cloud platforms: OpenStack, cloud platforms
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Senior Computer Scientist
Reston, Virginia, United States
OnsiteFull Time
12+ YOETS/SCI with Poly; MS in Data Science/CS/Statistics/Math; 12+ years in data science/analytics/ML for intelligence/defense; Python/R/SQL; data visualization; ML; knowledge graphs; SPARQL/GraphQL; AI/ML model development for analytic tradecraft.
Python, R, SQL, Power BI, Tableau, SPARQL, GraphQL
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Senior Scientist
Harrisburg, Pennsylvania, United States
OnsiteFull Time
9+ YOEBachelor's in environmental science, geology, hydrogeology or related and 9+ years' related experience (or 13+ years without degree). Ability to obtain Professional Geologist registration; 40-hour HAZWOPER preferred; valid driver's license may be required.
GPS, PID, CGI, data loggers
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Senior Scientist
Herndon, Virginia, United States
$150k-$235k/yr OnsiteFull Time
5+ YOEActive Top Secret clearance with ability to obtain SCI and CI polygraph; Bachelor's in related field; 5+ years OPIR/EO/IR experience; image processing and sensor performance expertise; strong documentation and communication skills.
Python, MATLAB, IDL, C/C++, ArcGIS, Google Earth, Opticks, Palette
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Data Scientist 3
Annapolis Junction, Maryland, United States
OnsiteFull Time
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.
Python, SQL, Machine Learning, Data Visualization
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Senior Scientist, Transplant Immunology & Gene Therapy
Silver Spring, Maryland, United States
$128k-$170k/yr OnsiteFull Time
5+ YOEMaster’s degree with 8+ years or PhD with 5+ years in immunology or related field; strong immunology, transplant biology, and gene therapy expertise; experience with viral and non-viral gene delivery; assay development; mentoring and cross-functional collaboration.
AAV, lentiviral vectors, adenoviral, mRNA/LNP, flow cytometry, cytokine profiling, ddPCR, qPCR, ELISA, multiplex assays
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Senior Scientist – Immunopeptidome
Gaithersburg, Maryland, United States
$116k-$174k/yr HybridFull Time
2+ YOEPhD in immunology or related field, 2+ years postdoctoral experience, expertise in immunopeptidome, T cell and myeloid biology, assay development, and strong scientific communication.
immunopeptidomics, FACS, ELISA, ELISPOT, high content imaging, cell killing assays, RNA
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Senior Data Scientist - Operational Analytics
Herndon, Virginia, United States
$104k-$166k/yr OnsiteFull Time
8+ YOE8+ years exp with BS, 6+ with MS, or 3+ with PhD in data science/CS/stats/math/engineering/OR/Analytics; strong data analysis, Python/R/SQL; experience with dashboards, metrics, and data quality.
Python, R, SQL, Notebooks, Scripts
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Data Scientist (TS/SCI w/ Poly)
Columbia, Maryland, United States
$180k-$220k/yr OnsiteFull Time
4+ YOESenior Data Scientist with TS/SCI w/ Poly, 4+ years experience; onsite; strong data engineering and pipelines; cloud experience.
Python, Java, Scala, PostgreSQL, MySQL, MongoDB, Cassandra, Neo4j, Spark, Hadoop, Kafka, AWS, Azure
2mo
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Senior Data Scientist - Marketing & Customer Analytics
Pittsburgh or Tysons Corner or Wilmington or Vienna
$100k-$186k/yr OnsiteFull Time
5+ YOE5+ years data science experience in financial services or marketing analytics; strong Python/SQL; ability to communicate with executives.
Python, SQL, Cloud, Spark, Hadoop
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Senior Applied Scientist , Prime Video Ads
Seattle or Arlington or New York
$167k-$249k/yr OnsiteFull Time
3+ YOE3+ years ML model development; PhD or Master’s with 6+ years of applied research; Java/C++/Python; deep learning experience; distributed systems and PyTorch/JAX preferred.
Java, C++, Python, PyTorch, JAX, Hadoop, Spark
2mo
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Senior Staff Environmental Engineer or Scientist
Washington, District of Columbia, United States
$71k-$107k/yr OnsiteFull Time
2+ YOESenior staff level role requiring 2+ years in environmental due diligence, fieldwork, regulatory knowledge, OSSHA 40-hr HAZWOPER, strong writing, and travel.
AutoCAD, GIS, Microsoft Word, Microsoft Excel, AI tools
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Senior Data Scientist
Laurel, Maryland, United States
$105k-$290k/yr OnsiteFull Time
Master's or PhD in a technical field, experience in AI/ML and statistical analysis, proven algorithm design and system implementation, hands-on Python, strong problem solving and communication, ability to obtain TS/SCI+poly (U.S. citizenship required).
Python
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Senior Data Scientist
Arlington, Virginia, United States
OnsiteFull Time
5+ YOE5+ years data science experience, Bachelor's in related field, strong SQL/Python/Scala skills, cloud data analytics and ML experience, ability to design data architectures and mentor junior staff.
SQL, Python, Scala, PySpark, Azure, Azure Data Lake, Azure Data Factory, Databricks, DevOps, ETL, IoT
1mo
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Senior Data Scientist
Fairborn or Dayton or Orlando or Washington
$135k-$150k/yr OnsiteFull Time
MS/PhD in STEM, strong AI/ML and quantitative modeling expertise, hands-on experience with agentic systems, Python and SQL proficiency, leadership on government programs, and ability to obtain security clearance.
LangChain, LangGraph, Python, pandas, NumPy, Matplotlib, Plotly, Jupyter, SQL
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