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123 sr scientist jobs at 58 companies in Rialto, CA

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Sr. Scientist/Sr. Scientist II - Pharmacology
Aliso Viejo or San Clemente or Burlington
$119k-$148k/yr OnsiteFull Time
Glaukos
GlaukosNYSE: GKOS: Develops therapies and devices for treating chronic eye diseases.
4+ YOEPh.D. in a relevant life science discipline and 4+ years of industry experience; expertise in ocular pharmacology, study design, data interpretation, regulatory submissions, and cross-functional research collaboration.
CROs, in vitro, ex vivo, in vivo, IND, NDA, BLA
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1mo
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Sr Sterility Scientist
New Jersey or Plainsboro or Mansfield or Irvine or West Valley City or Añasco or Columbia or Braintree
$71k-$98k/yr HybridFull Time
Integra LifeSciences
Integra LifeSciencesNASDAQ: IART: Manufacturing surgical instruments and regenerative medical technology devices.
10+ YOEBachelor's degree required; 10+ years sterilization/microbiology experience in medical device or pharmaceutical manufacturing; knowledge of ISO 11135/11137, FDA and EU MDR; strong SOP/protocol writing and collaboration skills.
Microsoft Office, Kaye Data loggers, thermocouples, pressure indicators
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1mo
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Sr Scientist, Plasma Control
Irvine, California, United States
$120k-$145k/yr OnsiteFull Time
TAE Technologies
TAE Technologies: Developing commercial fusion energy and advanced power management technologies.
PhD in physics or related field; experimental plasma physics and magnetic confinement fusion experience; expertise in real-time control systems, FPGA hardware/firmware, embedded systems, and advanced AI/ML methods; leadership and strong communication.
FPGA, Embedded C, C++, Matlab, Simulink, Stateflow, Real-Time Operating Systems
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Sr Scientist - Analytical Development
Irvine, California, United States
$120k-$168k/yr HybridFull Time
Tarsus Pharmaceuticals
Tarsus PharmaceuticalsNASDAQ: TARS: Develops and commercializes therapeutic treatments for prevalent ophthalmic diseases.
4+ YOEPhD with 4+ years or MS with 8–12 years pharmaceutical/biotech experience supporting analytical development; experience with HPLC/UPLC, GC, MS/LC-MS, stability, method development/validation, regulatory CMC documentation, and CRO/CDMO oversight.
HPLC, UPLC, GC, MS, LC-MS, Karl Fischer titration, dissolution, spectroscopy, particle characterization, compendial methods
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4w
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Principal Clinical Scientist
Aliso Viejo, California, United States
$148k-$194k/yr OnsiteFull Time
MicroVention
MicroVention: Manufacturer of neurovascular medical devices for stroke treatment.
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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3w
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Sr. Scientist II- New Product Development
Irvine, California, United States
$106k-$138k/yr OnsiteFull Time
Fujifilm Sonosite
Fujifilm SonositeTokyo Stock Exchange: 4901: Develops portable ultrasound systems for point-of-care medical diagnostics.
BS in science/engineering required; extensive experience in mammalian cell culture, bioreactor scale-up, process development, cross-functional project management, and scientific communication.
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2mo
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Sr. Data Scientist (Irvine, CA, US)
Irvine, California, United States
$114k-$220k/yr OnsiteFull Time
Skyworks Solutions
Skyworks SolutionsNASDAQ: SWKS: Designs and manufactures analog and mixed-signal semiconductor solutions.
8+ YOEBS + 8 years in ML/CS/EE/applied math (PhD preferred); strong ML/DL (CNNs, transformers, time-series, probabilistic methods); Python and PyTorch/TensorFlow/Scikit-learn; statistics, optimization, model evaluation; cross-team collaboration.
Python, PyTorch, TensorFlow, Scikit-learn, Airflow, MLflow
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6d
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Sr. Data Scientist- AI Model Development
Redlands, California, United States
$96k-$164k/yr OnsiteFull Time
Esri
Esri: Developing software for digital mapping and spatial data analysis.
5+ YOERequires 5+ years in software development, machine learning engineering, or data science; applied ML and transformer expertise; LoRA/QLoRA experience; and a bachelor's degree in a related field.
PyTorch, LoRA, QLoRA, ONNX Runtime, LlamaSharp, ArcGIS
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1mo
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Sr Scientist - Analytical Development
Irvine, California, United States
$120k-$168k/yr HybridFull Time
Tarsus Pharmaceuticals
Tarsus PharmaceuticalsNASDAQ: TARS: Developing therapeutics for eye care and infectious disease prevention.
4+ YOEPhD (4+ yrs) or MS (8–12 yrs) in a relevant scientific discipline; experience with analytical method development/validation, CMC/regulatory support, leadership of external labs, and advanced analytical techniques.
HPLC, UPLC, GC, MS, LC-MS, Karl Fischer titration
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3mo
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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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2mo
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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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Project Scientist Pool Ad - Clinical Pharmacy Practice
Irvine, California, United States
$77k-$202k/yr OnsiteFull Time
University of California
University of California: A public research university system providing education and healthcare.
Doctorate (M.D., Ph.D., or PharmD) required; submit CV and three references (contact information only). Open recruitment pool for future Project Scientist appointments.
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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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1mo
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Scientist (Mass Spectrometry)
San Juan Capistrano, California, United States
$85k-$110k/yr OnsiteFull Time
Quest Diagnostics
Quest DiagnosticsNYSE: DGX: Provides clinical laboratory diagnostic testing and health information services.
BS in biology/chemistry required; 5-7 years HPLC and LC-MS/MS experience (reduced with advanced degree); ability to design, validate assays and prepare technical documentation.
HPLC, LC-MS/MS
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1mo
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Scientist, Analytical Development
Tustin, California, United States
$110k-$137k/yr OnsiteFull Time
Avid Bioservices
Avid Bioservices: Contract development and manufacturing organization for mammalian-derived biopharmaceutical products.
8+ YOEBS in biochemistry/chemistry/biology required, 8+ years analytical/QC biotech experience, method development and validation experience with HPLC/CE/ELISA, GMP and report/procedure writing, supervisory experience.
ELISA, HPLC, CE, SDS-PAGE, Maurice
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1mo
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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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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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1w
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Clinical Scientist
Irvine, California, United States
$160k-$170k/yr RemoteFull Time
Balt
Balt: Manufacturer of medical devices for treating neurovascular diseases
5+ YOEPhD, PharmD, or advanced medical/life sciences degree preferred; 5+ years in medical devices, including 2+ years writing clinical investigation plans and clinical study reports; strong clinical analysis and medical writing skills.
Microsoft Office, Adobe Acrobat
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2mo
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Innovation Scientist
Orange, California, United States
$115k-$130k/yr OnsiteFull Time
MeriCal
MeriCal: Manufacturer of custom probiotic and dietary supplement products.
5+ YOEBS in a relevant science, 5+ years R&D/manufacturing experience in dietary supplements, formulation and prototyping experience, strong scientific storytelling, cross-functional collaboration, and customer-facing technical support.
E-Verify
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