9 ai scientist jobs at 7 companies in Menifee, CA
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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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Artificial Intelligence Scientist IV
Los Angeles or Irvine
$208k-$354k/yr OnsiteFull Time
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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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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Data Scientist
McLean or New York City or San Francisco or Los Angeles or Irvine or Washington
$118k-$219k/yr HybridFull Time
3+ YOEUS citizen able to obtain security clearance, Bachelor’s/Master’s in technical field, 3+ years relevant experience, strong Python and SQL skills, experience with ML/AI, prototyping, and customer-facing communication.
Python, Docker, FastAPI, Git, GitHub, SQL, Kubernetes, REST APIs
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Senior Data Scientist (Onsite)
Irvine, California, United States
$138k-$200k/yr OnsiteFull Time
3+ YOEBachelor's in a quantitative field required (Master's preferred); 3+ years model development experience required (5+ preferred); skills in Python/R, ML methods, SQL, LLMs, cloud, visualization, and AI-assisted tools.
Python, R, SPSS Modeler, SAS, Oracle CVUE, CRM, IR&A Data Warehouse, College Board, IPEDS, National Student Clearing House, Common Dataset, Claude Code, LLM, Microsoft Azure, AWS, Google Cloud, Microsoft Power BI, Tableau, Microsoft SQL Server, Microsoft Excel
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R&D Food Scientist
Irvine, California, United States
$80k-$100k/yr OnsiteFull Time
3+ YOEMinimum 3 years experience; Master's in Food Science or related preferred; expertise in food/beverage/supplement formulation, food chemistry, microbiology, processing, protein characterization; customer-facing technical support; project management; willing to travel up to 20%.
AI
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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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Sr Scientist, Plasma Control
Irvine, California, United States
$120k-$145k/yr OnsiteFull Time
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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Accounting Specialist Editor
Eagan or Frisco or New York City or Ann Arbor or San Francisco or Los Angeles or Irvine or McLean or Washington
$100k-$186k/yr HybridFull Time
7+ YOECPA license, minimum 7 years consulting/advisory and compliance experience, strong writing/editing and analytical skills, audit/accounting expertise, ability to work with AI/LLMs and collaborate with engineers/data scientists.
AI, LLMs, Checkpoint