275 senior scientist jobs at 125 companies in Walnut, CA
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Senior Scientist, Biologics Formulation
El Segundo, California, United States
$140k-$180k/yr OnsiteFull Time
3+ YOEPhD in a relevant field; 3+ years protein formulation development; deep protein chemistry and biophysics expertise; hands-on analytics; independent in fast-paced startup; strong scientific writing.
Dynamic Light Scattering, Differential Scanning Calorimetry, Size Exclusion Chromatography, Capillary Electrophoresis, Rheology, Spectroscopy
3mo
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Senior Scientist / Engineer
Los Angeles, California, United States
OnsiteFull Time
3+ YOE3+ years in materials R&D, processing, or additive manufacturing; hands-on experimental focus; strong documentation and data analysis.
Raman spectroscopy, SEM/EDS, Optical microscopy, Electrical testing, Thermal testing, Hardness testing, CVD/LCVD, Laser processing, LPBF, DED
2mo
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Senior Scientist
Pasadena or Sudbury or Chicago or Tampa or Phoenix
$105k-$120k/yr HybridFull Time
5+ YOEPh.D.,5+ years leading evaluation-focused proposals and projects, expertise in substance use/rural health/criminal justice, experience with federal contracts and SAMHSA data tools.
Stata, REDCap, Dedoose, Microsoft Word, Microsoft Outlook, Microsoft PowerPoint, Microsoft Excel, citation management software
1mo
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Senior Scientist
Pasadena, California, United States
$134k-$165k/yr OnsiteFull Time
10+ YOE8+ MgmtBS in Physics, Astronomy, or Engineering; 10+ years high-precision optics experience; 8+ years mentoring; expertise in optical design, coatings, and precision optical metrology; MS/PhD preferred; MS Project experience preferred.
Microsoft Project
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Senior Scientist
Monrovia, California, United States
$90k-$120k/yr OnsiteFull Time
PhD in a relevant engineering or chemistry field; background in hollow fiber membranes, filtration, separations, or bioprocessing; experimental design, data analysis, failure analysis; lab testing and prototype experience; strong communication.
6d
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Senior Medical Laboratory Scientist
Burbank, California, United States
$60-$94/hr OnsiteFull Time
3+ YOEBachelor's degree, graduation from an approved medical technology school, and a California clinical laboratory scientist license or applicable specialty scientist license are required; 3 years of experience preferred.
2w
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Senior Scientist
Torrance, California, United States
$90k-$100k/yr OnsiteFull Time
1+ YOEPhD in cell or molecular biology, 1-2 years lab experience with iPSC culture, sterile technique, directed differentiation; familiarity with Seahorse and 10X workflows; strong communication and organizational skills.
Sea horse, 10X Genomics, Chromium, Visium, Flow cytometry, FACS, Confocal microscopy
6d
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Senior Medical Laboratory Scientist
Burbank, California, United States
$60-$94/hr OnsiteFull Time
3+ YOEBachelor's degree and graduation from an approved medical technology school required; California clinical laboratory scientist license or applicable specialty license required. Three years of experience preferred.
2mo
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Senior AI/ML Scientist, Planetary Science
Long Beach or New York City
$154k-$211k/yr HybridFull Time
3+ YOEPhD in a technical field and 3+ years of experience; expertise in transfer learning, domain adaptation, or fine-tuning; multi-modal data fusion; end-to-end problem ownership; collaboration with scientists and engineers.
Python, TensorFlow, PyTorch, scikit-learn, ML frameworks, multi-modal data fusion
1mo
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Senior Data Scientist
Irvine, California, United States
$108k-$153k/yr OnsiteFull Time
4+ YOEBachelor's in a related field plus 4 years (or Master’s plus 3) experience; expertise in clinical/product domain modeling, statistical methods, and regulatory-grade model documentation.
statsmodels, lifelines, scikit-survival, PyMC, SHAP, Captum, Python, SQL, SAS, Microsoft Power BI, Tableau Prep, PyTorch, TensorFlow, MLflow, MONAI, pydicom, SimpleITK, DoWhy, EconML, Optuna, Ray Tune, R, JAX
2mo
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Senior Data Scientist
Canada or United States or San Francisco or Los Angeles
$170k-$200k/yr RemoteFull Time
5+ YOE5+ years building and deploying production data science/ML systems; strong statistics, causal inference, experimentation, coding/debugging, EM/production ops, and customer-facing communication; BS required, MS/PhD preferred.
1mo
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Senior Research Scientist
Orange, California, United States
$85k-$90k/yr OnsiteFull Time
1+ YOEPh.D. in philosophy/psychology/neuroscience, 1+ year postdoctoral research, 5+ peer-reviewed publications, proficiency with MATLAB/JASP/R, EEG experience, strong writing and presentation skills.
MATLAB, JASP, R, EEG
4d
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Senior Data Scientist
Albany or Arlington or Atlanta or Austin or Beaverton or Bentonville or Boston or Carmel or Charlotte or Chicago or Cincinnati or Cleveland or Columbus or Culver City or Denver or Des Moines or Detroit or Hartford or Houston or Irving or Kirkland or Miami or Milwaukee or Minneapolis or Morristown or Mountain View or Nashville or New York City or Oklahoma City or Overland Park or Philadelphia or Pittsburgh or Raleigh or Redmond or Sacramento or San Diego or San Francisco or Scottsdale or Seattle or St. Louis or St. Petersburg or Walnut Creek or United States or Los Angeles
$80k-$294k/yr HybridFull Time
6+ YOERequires 6+ years in data science, AI, analytics, Responsible AI, consulting, governance, or related fields; quantitative bachelor's or master's degree; Python, SQL, ML, AI governance, and client leadership expertise.
Python, pandas, NumPy, scikit-learn, PyTorch, TensorFlow, XGBoost, SQL, AWS, Microsoft Azure, Google Cloud, MLOps, GenAIOps, LLMOps, APIs, Microsoft Word
3w
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Senior Data Scientist
Burbank or New York City
$124k-$186k/yr OnsiteFull Time
5+ YOE5+ years data science experience with strong statistical modeling, Python and SQL coding, econometrics or natural experimentation experience, and ability to communicate results to non-technical stakeholders.
Python, SQL, Google Cloud Platform (BigQuery, ML Engine, and APIs)
1d
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Senior Data Scientist
New York or Austin or New York City or Los Angeles or San Francisco or London or Berlin or Singapore or Tel Aviv
HybridFull Time
8+ YOE8+ years in data science or quantitative analysis; expertise in experimental design, causal inference, statistical and ML modeling; SQL and Python or R; large-scale data; strong communication skills.
SQL, Python, R, Databricks, Spark
3w
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Senior Data Scientist
Los Angeles, California, United States
$167k-$251k/yr HybridFull Time
Advanced quantitative background (Master's/PhD preferred), proven experience in causal inference, forecasting, optimization and value/impact measurement; proficiency in Python, SQL and PySpark; strong stakeholder management and communication.
Python, SQL, PySpark, transformers
1w
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Senior Data Scientist
Los Angeles, California, United States
$185k/yr OnsiteFull Time
Production ML/statistical modeling experience, strong Python and data science library skills, experience with large datasets and complex pipelines, and hands-on LLM or foundation model experience.
Python, PyTorch, TensorFlow, scikit-learn, LLMs, RAG
6d
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Senior Data Scientist
Los Angeles, California, United States
$139k-$185k/yr HybridFull Time
5+ YOEMaster’s degree or Ph.D. preferred in a technical field, 5+ years of Python and Java experience, ML frameworks, SQL, scalable ML systems, evaluation harnesses, testing frameworks, and distributed data systems.
Python, Java, PyTorch, TensorFlow, Spark MLlib, SQL, Cursor, Claude, GitHub Copilot, HDFS, Hadoop, Kafka, Apache Spark
4d
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Senior Data Scientist
New York City or Milwaukee or Dallas or Columbus or Kirkland or Cincinnati or Cleveland or Oklahoma City or Austin or Albany or Chicago or St. Petersburg or Hartford or Pittsburgh or St. Louis or Miami or Sacramento or Raleigh or Minneapolis or Mountain View or Scottsdale or San Francisco or Morristown or Denver or Boston or Philadelphia or Des Moines or Overland Park or Los Angeles or Charlotte or Walnut Creek or Carmel or Seattle or Houston or Arlington or Atlanta or Redmond or Bentonville or Beaverton or Nashville or Detroit or San Diego
$87k-$294k/yr HybridFull Time
6+ YOE6+ years in data science, AI, analytics, Responsible AI, or consulting; bachelor's or master's in a quantitative field; Python, SQL, machine learning, generative AI, governance, and client leadership experience.
Python, pandas, NumPy, scikit-learn, PyTorch, TensorFlow, XGBoost, SQL, MLOps, GenAIOps, LLMOps, AWS, Microsoft Azure, Google Cloud
2w
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Principal Clinical Scientist
Aliso Viejo, California, United States
$148k-$194k/yr OnsiteFull Time
5+ YOEMaster's degree in relevant science/medicine, 5+ years clinical research scientist experience, GCP knowledge, clinical protocol development, strong writing and communication, analytical skills.
PubMed, MedLine
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