28 principal scientist jobs at 15 companies in Walnut Park, CA
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Senior Principal Scientist
Thousand Oaks, California, United States
$168k-$228k/yr HybridFull Time
Doctorate or equivalent scientific degree with toxicology experience; expertise in leachables/extractables, risk-based toxicology assessments, OEL/OEB derivation, GHS classification, and regulatory guidance (ICH/ISO).
OECD Toolbox, Toxtree, Benchmark Dose (BMD), EndNote, Microsoft Office
1mo
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Associate Principal Scientist, Innovation
El Segundo, California, United States
$116k-$174k/yr HybridFull Time
6+ YOEMaster's in nutrition/exercise physiology or related,6+ years R&D/innovation experience in CPG or supplements,expertise with dietary supplement ingredients,supporting concept-to-commercialization,AI tools and cross-functional work.
Microsoft Office, Citation Managers, PubMed, AI tools and platforms
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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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Principal Scientist
Valencia, California, United States
$131k-$165k/yr HybridFull Time
8+ YOEMaster's degree in a related scientific discipline and 8+ years in clinical development, research, Medical Affairs, or Scientific Affairs. Requires protocol development, scientific writing, medical device clinical development, ICH-GCP, ISO 14155, FDA regulations, and project-management skills.
Clinical Study Reports (CSRs), ICH-GCP, ISO 14155, FDA, FDA PMA/IDE, EU MDR
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Principal Scientist- Search
New York City or San Francisco or Los Angeles or Irvine or McLean or Washington
$212k-$394k/yr HybridFull Time
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
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Senior Principal Data Scientist, Advanced Forecasting
Irvine, California, United States
$145k-$205k/yr OnsiteFull Time
10+ YOEBachelor's degree in quantitative field, minimum 10 years experience (or 8 with Masters/4 with PhD), strong statistical and ML fundamentals, hands-on Python/R and SQL, forecasting and scenario modeling experience, excellent communication.
Python, R, SQL, Anaplan, Oracle, JDE, Concur, Salesforce.com, Databricks, Azure, AWS
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Principal Data Scientist
Palmdale, California, United States
$125k-$188k/yr OnsiteFull Time
1+ YOEActive DoD Secret clearance, 5+ years relevant experience with bachelor's (or 3+ with master's, 1+ with PhD); SQL, ETL, Python, Tableau/PowerBI, Airflow, Gitlab, Agile experience required; strong statistical and communication skills.
SQL, Tableau, PowerBI, Python, Airflow, Gitlab, Tableau Server
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Principal Data Scientist
San Francisco or New York City or Bellevue or Burbank
$228k-$423k/yr HybridFull Time
8+ YOEMaster's degree in a quantitative field required; PhD preferred. Requires 8+ years in machine learning, AI, or data science, recommender systems expertise, SQL, big data, and Python-based ML platforms.
SQL, AWS, Snowflake, Spark, Google Cloud, Python, TensorFlow, Keras, PyTorch
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Principal Data Scientist
Palmdale, California, United States
$125k-$188k/yr OnsiteFull Time
5+ YOEActive DoD Secret clearance, 5+ years' relevant experience (with bachelor's), expertise in SQL, ETL, Python, Airflow, BI (Tableau/PowerBI), Gitlab, and Agile workflows.
SQL, Tableau, PowerBI, Python, Airflow, Gitlab, Tableau Server, Apache Airflow
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Principal Scientist, Molecular Genomics
Princeton or Arizona or Puerto Rico or Los Angeles County
$139k-$168k/yr OnsiteFull Time
4+ YOELife Sciences degree with 4–8+ years of academic or industry experience, extensive PCR, qPCR, NGS, GEP, and molecular assay expertise, plus clinical genomics and biomarker development experience.
PCR, qPCR, NGS, SOPs
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Principal Data Scientist - Games
Glendale, California, United States
$156k-$209k/yr OnsiteFull Time
10+ YOEBachelor's in quantitative field,10+ years data science experience in gaming/entertainment,proficiency in SQL and Python or R,experience with cloud analytics and experimentation,strong communication and storytelling skills.
SQL, Python, R, Snowflake, Databricks, AWS, Tableau, Looker
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Principal Data Scientist - Games
Glendale, California, United States
$156k-$209k/yr OnsiteFull Time
10+ YOE10+ years data science experience; advanced analytics, experimentation, forecasting, and behavioral segmentation for games/telemetry; strong SQL and Python/R skills; executive communication and cross-functional influence.
SQL, Python, R, Snowflake, Databricks, AWS, Tableau, Looker
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Principal Data Scientist, Pricing
Los Angeles, California, United States
RemoteFull Time
8+ YOE8+ years in data science with pricing/revenue optimization experience; production ML deployment experience; strong quantitative modeling; ability to communicate with product and executive stakeholders.
Python, SQL, AWS, GCP, Azure, Snowflake, Databricks, dbt
2mo
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Principal Applied Scientist Perception, Compass
Pasadena, California, United States
$199k-$269k/yr OnsiteFull Time
6+ YOEPhD in a technical field, 6+ years in perception research (robotics preferred), strong publication record, experience deploying perception on robots, and proficiency in Python and C++.
Python, C++, LiDAR, depth cameras, radar, embedded GPUs
2w
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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
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
3w
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Principal Research Scientist - Frontier Industrial AI
San Leandro or New York City or Massachusetts or Lake Forest or Philadelphia
$214k-$356k/yr HybridFull Time
PhD or equivalent research experience in a relevant field; original AI research, strong software development, experimental systems, independent project execution, and expertise in advanced machine learning areas.
Python
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Project Scientist -Surgery Chair
Los Angeles, California, United States
$67k-$133k/yr OnsiteFull Time
Doctorate required, with postdoctoral completion where applicable. Requires significant original research contributions and technical competency in research techniques, protocols, and the principal investigator's specialty.
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