50 principal scientist jobs at 15 companies in Bothell, WA
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Principal Experimental Scientist - RF
Everett, Washington, United States
$230k-$270k/yr OnsiteFull Time
10+ YOEPhD in physics, plasma physics, electrical engineering, or related field; 10+ years in lab/R&D with plasma systems; expertise in RF plasma sources and diagnostics.
RF hardware, Antenna design, Vacuum systems, Plasma diagnostics, RF-plasma interactions
2mo
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Principal Scientist - Cell Therapy Translational Research
Seattle, Washington, United States
$152k-$185k/yr OnsiteFull Time
8+ YOELead translational research in cell therapy; develop biomarker strategies; manage CROs and collaborators; strong communication.
Flow cytometry, Transcriptomics, Proteomics, Biomarker assays, Clinical data analysis
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Principal Scientist - Cell Therapy Translational Research
Seattle, Washington, United States
$152k-$185k/yr OnsiteFull Time
4+ YOEAdvanced degree in life sciences (BS/MS/PhD) with 4–8+ years industry or academic experience; expertise in immunology/cell therapy, biomarker assays (flow cytometry, transcriptomics, proteomics), data analysis, translational strategy, CRO oversight, and regulatory writing.
3mo
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Principal Applied Scientist, Amazon Payments
Seattle, Washington, United States
$199k-$269k/yr OnsiteFull Time
10+ YOE2+ MgmtPhD or MSc in CS; 10+ years AI/ML; strong research, collaboration, delivery; leadership in teams; excellent communication.
Python, Machine Learning, Natural Language Processing, GenAI, TensorFlow, PyTorch
1mo
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Principal Applied Scientist
Redmond, Washington, United States
$143k-$331k/yr HybridFull Time
3+ YOEAdvanced degree in a quantitative field with multi-year research experience (or equivalent), expertise in machine learning and deep learning, publications/presentations preferred, and experience deploying production ML systems.
TensorFlow, PyTorch, Spark, MapReduce, Cosmos
2mo
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Principal, Data Scientist
Bellevue, Washington, United States
$132k-$264k/yr OnsiteFull Time
3+ YOEAdvanced ML and statistics expertise; experience architecting large-scale ML systems; strong Python and SQL skills; experience with Spark/Hive; PhD or Master’s with significant experience or extensive industry experience as specified.
Python, Java, Scala, SQL, Hive, Spark, Kaggle, scikit-learn, TensorFlow, PyTorch, R
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Principal Applied Scientist
Bellevue, Washington, United States
$200k-$250k/yr OnsiteFull Time
10+ YOEMS/PhD preferred in CS/ML/AI, 10+ years industry ML experience building production ML systems, strong Python, expertise with LLMs/foundation models, distributed training, model deployment, and excellent communication.
Python
1mo
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Principal Scientist, Immunology
San Francisco or Seattle
$175k-$190k/yr RemoteFull Time
8+ YOEPhD in immunology or related field with 8+ years industry experience; deep immunology expertise, drug development knowledge, experience with immunological assays (flow cytometry, ELISA/MSD), strong communication and publication record.
flow cytometry, ELISA/MSD, cytokine panels, cellular assays, single-cell, proteomics
1w
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Principal Applied Scientist (200045521)
Redmond, Washington, United States
OnsiteFull Time
No qualifications or experience requirements are specified in the posting.
2mo
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Senior/Principal Fisheries Scientist
Wenatchee or Seattle or Portland or Washington or Oregon or Idaho or California or Montana
$110k-$145k/yr RemoteFull Time
10+ YOEBachelor's in fisheries science/biology/ecology required (Masters/Doctorate preferred); 10+ years experience in Pacific Northwest salmonid issues; expertise in fish passage, ESA consultation, hatchery operations, study design, quantitative analysis, project management, and staff supervision; valid driver’s license.
1mo
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Principal AI/ML Applied Scientist
Seattle, Washington, United States
$267k-$350k/yr HybridFull Time
11+ YOEBachelor's in CS/data/engineering or equivalent; 11+ years AI/ML research experience; deep expertise in generative AI, NLP, computer vision, multimodal learning; experience with Python and PyTorch; ability to lead enterprise AI strategy and translate research to production.
Python, PyTorch
2d
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Principal Data Scientist, Google Search
Mountain View or Kirkland or New York City or Seattle or San Francisco
$307k-$427k/yr OnsiteFull Time
15+ YOEBachelor’s degree or equivalent practical experience; 15 years in data science or quantitative fields; experience using data insights to improve products and engineering; advanced degree and product-building experience preferred.
AI
3w
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Senior / Principal Clinical Scientist, Clinical Development
Bothell, Washington, United States
$146k-$226k/yr OnsiteFull Time
2+ YOEAdvanced degree (PhD/MD/PharmD/MS) in life sciences, minimum 2 years clinical development experience, oncology/biopharma experience preferred, strong leadership, project management, regulatory and data analysis skills.
1mo
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Principal Research Scientist, Siri Innovation Studio
Seattle, Washington, United States
OnsiteFull Time
Expertise in machine learning modeling, incubating and deploying ML-driven features, collaborating across software/hardware/design teams, and building user-centered AI for assistants and speech products.
iOS, iPadOS, macOS, watchOS, visionOS
1w
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Principal Machine Learning Scientist - Agentic Experiences
Seattle or San Jose
$224k-$339k/yr OnsiteFull Time
10+ YOEBS or equivalent,10+ years industry experience, proven experience building agentic/multi-step AI systems, strong Python and ML framework skills, experience with LLM APIs and orchestration, evaluation and productionization experience.
Python, PyTorch, TensorFlow, JAX, LLM APIs, LangChain, LlamaIndex
3w
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Principal Scientist - Data Pipeline Engineer
San Jose or Seattle or San Francisco
$206k-$388k/yr OnsiteFull Time
10+ YOE10+ years in data engineering/ML infrastructure, distributed systems expertise, Python and a systems language, experience with Ray or Spark, GPU inference optimization, large-scale databases and data curation for model training.
Ray, Spark, Python, C++, Rust, Go, Java
2mo
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Associate Principal - Data Sciences
Bellevue, Washington, United States
$105k-$178k/yr OnsiteFull Time
14+ YOERequires a bachelor's degree in a relevant field, 14 years of experience, advanced SQL and Python, machine learning, deep learning, NLP, data libraries, and strong analytical and communication skills.
Python, SQL, Pandas, NumPy, Scikit-learn, TensorFlow, Keras, PyTorch, NLTK, spaCy, Transformers, OpenAI APIs
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