26 principal scientist jobs at 11 companies in Tujunga, 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
3w
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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 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
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
2w
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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 - 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, 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
2d
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Principal Clinical Research Scientist
Jacksonville or Milpitas or Irvine
$117k-$201k/yr HybridFull Time
5+ YOEAdvanced scientific degree, 5+ years of ophthalmic clinical research experience, clinical program leadership, study design, technical writing, biostatistics knowledge, and cross-functional influence.
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Principal Clinical Research Scientist
Jacksonville or Milpitas or Irvine
$117k-$201k/yr HybridFull Time
5+ YOEAdvanced scientific degree and 5+ years of ophthalmic clinical research experience required, with clinical study leadership, study design, technical writing, biostatistics knowledge, and cross-functional influence.
Clinical Study Reports (CSRs), Good Clinical Practice (GCP)
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Senior Principal Data Scientist, AEC
California or Washington or New York or British Columbia or Ontario or Irvine
$159k-$286k/yr RemoteFull Time
10+ YOE10+ years in data science/applied ML focused on product analytics and user behavior modeling; expertise in predictive modeling, instrumentation, AI evaluation, and experimentation; strong communication and technical leadership.
LLMs, MCP, RAG architectures, LLM-as-a-Judge, A/B testing
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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
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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
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