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152 sr scientist jobs at 78 companies in Lancaster, CA

1d
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Sr. Applied Scientist, AGI
Sunnyvale or San Francisco or Los Angeles County
$192k-$260k/yr OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
3+ YOERequires 3+ years building machine learning models, large-scale ML systems experience, a PhD or master's degree with 6+ years applied research, and Java, C++, or Python programming.
Java, C++, Python, Large Language Models (LLMs), Generative Artificial Intelligence (GenAI), RL Gyms
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2mo
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Sr. Scientist (CA, US)
Calabasas, California, United States
$80k-$100k/yr HybridFull Time
Wella
Wella: Manufacturer of professional hair, nail, and beauty tech products.
BS in chemistry/materials/polymer science required (MS preferred); hands-on formula and product development experience; lab batch making, testing, GLP, SAP R&D systems, strong communication and presentation skills.
SAP R&D systems, Stage-Gate process, Good Laboratory Practices (GLP)
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1mo
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Sr. Scientist II, R&D (Plant-Based Beverages)
Los Angeles or Bakersfield
$120k-$145k/yr OnsiteFull Time
Califia Farms
Califia Farms: Produces plant-based milks, creamers, and cold brew coffees.
7+ YOEM.S. or Ph.D. in food science/chemistry or related,7+ years food/beverage product development,DOE and pilot plant experience,knowledge of ingredient functionality,food safety/GMP/HACCP familiarity.
Design of Experiments (DOE)
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Sr P&C Data Scientist
Omaha or New York City or Houston or Albany or Los Angeles or Chicago
$92k-$160k/yr OnsiteFull Time
Brookfield Wealth Solutions
Brookfield Wealth SolutionsNYSE: BNT: Provides wealth protection, retirement services, and specialty insurance solutions.
5+ YOEBachelor's degree in a quantitative field, 5+ years relevant experience, advanced proficiency with SQL and Python or R, P&C insurance pricing/analytics experience preferred, strong analytical and communication skills.
SQL, Python, R
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2mo
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Senior Scientist
Pasadena or Sudbury or Chicago or Tampa or Phoenix
$105k-$120k/yr HybridFull Time
Advocates for Human Potential
Advocates for Human Potential: Provides consulting and research services for human services systems.
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
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1mo
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Senior Scientist
Pasadena, California, United States
$134k-$165k/yr OnsiteFull Time
Caltech
Caltech: Provides university-level education and scientific research services.
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
ChromoLogic
ChromoLogic: Develops and commercializes disruptive medical, aerospace, and security technologies.
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.
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Artificial Intelligence Scientist IV
Los Angeles or Irvine
$208k-$354k/yr OnsiteFull Time
Capital Group
Capital Group: Providing active investment management and research-driven financial strategies
10+ YOEMS in CS/AI/ML required (PhD preferred), 10+ years relevant experience, expertise in LLMs, generative and agentic AI (RAG, PEFT, instruction fine-tuning, prompt engineering), transformers and deep learning, publication record, ability to collaborate with engineering and mentor scientists.
Deep Neural Networks, Large Language Models (LLMs), RAG, Transformers, Agentic AI
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Sr. Clinical Lab Scientist, Microbiology
Valencia, California, United States
$46-$74/hr OnsiteFull Time
Henry Mayo Newhall Hospital
Henry Mayo Newhall Hospital: Provides comprehensive hospital and emergency medical care services.
2+ YOECurrent California CLS license, BS/BA, 2+ years hospital lab experience preferred, specimen processing, result reporting, supervisory communication, basic computer skills.
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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
Thomson Reuters
Thomson ReutersNASDAQ: TRI: Provides professional software, data, and news services globally.
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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Research Scientist
Pomona, California, United States
$120k-$147k/yr OnsiteFull Time
Envista
EnvistaNYSE: NVST: Manufactures and sells a comprehensive range of dental products.
5+ YOEDesign and execute experiments, lead feasibility and NPD activities, apply good laboratory practices, document risk and design control, and support product launches in dental chemical consumables.
Microsoft Word, Microsoft Excel
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3mo
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Project Scientist
Pasadena, California, United States
$155k-$240k/yr OnsiteFull Time
Giant Magellan Telescope Organization
Giant Magellan Telescope Organization: Constructing the Giant Magellan Telescope for astronomical research.
10+ YOEPhD in astronomy/astrophysics; 10 years post-doctoral observational experience; strong analytical, leadership, and communication skills; willingness to travel to multiple sites.
astronomy instruments, adaptive optics, spectrographs, data analysis software
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Research Scientist
Los Angeles or Washington
$117k-$132k/yr HybridFull Time, Temporary
University of Southern California
University of Southern California: Private research university providing higher education and healthcare services.
5+ YOEPh.D. or equivalent doctorate and 5 years of directly related research experience; requires advanced research knowledge, leadership in developing ideas, independent scholarly writing, and publication ability.
CMS, FDA, CBO, NIH
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2mo
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Research Scientist
Hampton or Greenbelt or Huntsville or Dallas or Houston or Denver or Mountain View or Edwards Air Force Base
$90k-$125k/yr OnsiteFull Time
Analytical Mechanics Associates
Analytical Mechanics Associates: Provides aerospace engineering and technical services for space missions.
5+ YOEBachelor's in Physics/Atmospheric Science, 5+ years with satellite/airborne/ground atmospheric datasets, expertise in atmospheric processes, scientific programming (Python/MATLAB/IDL), data/time-series analysis, and strong communication skills.
Python, MATLAB, IDL, LaTeX, Microsoft Word, NetCDF, HDF
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1mo
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Environmental Scientist
Los Angeles or Long Beach
$72k-$120k/yr OnsiteFull Time
GHD
GHD: Global professional services firm specializing in engineering and architecture.
5+ YOE1+ MgmtBachelor's in environmental field required; 5+ years project management experience with emergency response, air monitoring, sampling, ICS, SCAT; supervisory experience; strong communication and client management skills.
Geographic Information Systems (GIS), Unmanned Aerial Vehicle (UAV), Incident Command System (ICS), Shoreline Clean-up Assessment Technique (SCAT)
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6d
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Data Scientist
Torrance or Los Angeles or Mesa
$170k-$300k/yr OnsiteFull Time
Hadrian
Hadrian: Building autonomous factories for aerospace and defense manufacturing.
Requires Python, forecasting, representation learning, deep learning with PyTorch, classical machine learning, statistics, model validation, deployment, monitoring, and experience with sparse manufacturing data.
PyTorch, Python, PyTorch Geometric, CAD, B-rep, GNNs, ANN
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6d
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Data Scientist
United States or Alexandria or Los Angeles or Colorado Springs or Maryland or Virginia or District of Columbia
HybridFull Time
Whitespace
Whitespace: Building AI-powered geospatial intelligence platforms for global leaders.
5+ YOERequires 5+ years in data science focused on geospatial analysis, statistical modeling, predictive model validation, data visualization, and US citizenship with residence in the contiguous United States.
QGIS, ArcPro, Python, GeoPandas
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6d
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Scientist II, GLP Bioanalysis
Madison or Pasadena or San Diego or Verona
$100k-$110k/yr OnsiteFull Time
Arrowhead Pharmaceuticals
Arrowhead PharmaceuticalsNASDAQ: ARWR: Develops RNAi medicines to treat genetic and intractable diseases.
8+ YOEBachelor's degree with 12+ years or master's degree with 8+ years of relevant GxP bioanalytical experience; expertise in method development, validation, regulated analysis, and analytical platforms required.
LC-MS/MS, LC-FL, hybrid assays, immunoassays, Good Documentation Practices (GDP)
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Data Scientist, Modeler
Los Angeles, California, United States
$130k-$150k/yr HybridFull Time
The Wonderful Company
The Wonderful Company: Produces and markets branded food, beverages, and floral products.
5+ YOE5+ years in data science/advanced analytics (eCommerce preferred). Strong forecasting, LTV, experimentation, Python and SQL (BigQuery) skills; hands-on LLM/AI experience and executive communication ability.
Python, R, SQL, BigQuery, GCP, OpenAI, Claude, Gemini
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Principal Data Scientist
Palmdale, California, United States
$125k-$188k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
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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