51 ai scientist jobs at 36 companies in Ladera Ranch, CA

1mo
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AI Scientist
Pasadena, California, United States
$200k-$300k/yr OnsiteFull Time
Oratomic
Oratomic: Neutral-atom quantum computing developing hardware and error-correction architecture for utility-scale fault-tolerant quantum computers.
Frontier AI research experience strongly desirable; collaborative team player; motivated to build quantum computers. Prior quantum computing knowledge not required. Hiring at all experience levels (post-bachelors through PhD).
3mo
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Senior AI/ML Scientist, Planetary Science
Long Beach or New York City
$154k-$211k/yr HybridFull Time
Relativity Space
Relativity Space: Aerospace developing 3D-printed rockets and launch services.
3+ YOEPhD in a technical field and 3+ years of experience; expertise in transfer learning, domain adaptation, or fine-tuning; multi-modal data fusion; end-to-end problem ownership; collaboration with scientists and engineers.
Python, TensorFlow, PyTorch, scikit-learn, ML frameworks, multi-modal data fusion
2w
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Senior AI Scientist, AI Products / Life Sciences
Redwood City or Colorado or Illinois or New York or Los Angeles
$125k-$185k/yr OnsiteFull Time
Tempus AI
Tempus AINASDAQ: TEM: AI-enabled precision medicine and health technology.
1+ YOEPh.D. in computer science or related quantitative field; 1+ year industry ML experience; expertise in deep learning and production models; Python, PyTorch, multimodal modeling, and peer-reviewed publications.
Python, PyTorch
3mo
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AI Research Scientist — Agentic AI for Materials Discovery
Redmond or Pasadena
$184k-$257k/yr OnsiteFull Time
Reality Labs
Reality LabsNASDAQ: META: ’s AR/VR and wearable-technology business unit builds immersive hardware, software, research, and content for consumers.
2+ YOEBachelor's or PhD in a technical field; 2+ years with LLMs/prompts; Python and ML frameworks; experience building end-to-end AI systems; domain familiarity in chemistry or materials.
Python, PyTorch, JAX, React, HPC, DFT, MD, Monte Carlo, tool-use agents, retrieval-augmented generation, knowledge graphs
1w
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Staff Gen AI Research Scientist 
Costa Mesa or Seattle or Washington
$220k-$292k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology developing AI-powered autonomous military systems.
2+ YOERequires a technical degree, 2+ years focused on generative models and transformers, production Python and deep learning expertise, LLM experience, and eligibility for a U.S. Top Secret clearance.
Lattice OS, Python, PyTorch, JAX, Axolotl, Hugging Face, DeepSpeed, Megatron-LM, LangChain, LlamaIndex, NVIDIA Jetson
1w
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Forward Deployed AI Scientist, Campus, United States - BCG X
Boston or Chicago or Washington or Pittsburgh or New York City or Brooklyn or Manhattan Beach or Dallas or Miami or San Francisco or Seattle or Los Angeles
$110k-$190k/yr OnsiteFull Time
BCG X
BCG X: BCG X is BCG’s tech build and design division, building AI systems, digital products, services, and businesses.
Students pursuing a full-time bachelor's, master's, or PhD graduating December 2026–August 2027; requires advanced analytics, machine learning, data synthesis, communication, coding, and project management skills.
Python
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Biometrics and AI Research Scientist
Pasadena, California, United States
$137k-$228k/yr HybridFull Time
Thales
ThalesEuronext Paris: HO: Global technology leader in aerospace, defense, and security.
3+ YOEMS+3yrs or PhD in EE/CS, U.S. work authorization, 3+ years coding in C/C++ and Python, deep learning (PyTorch/TensorFlow/Onnxruntime/OpenVINO) for computer vision, biometrics or related experience, B.S. in imaging and signal analysis.
C, C++, Python, PyTorch, TensorFlow, Onnxruntime, OpenVINO, CUDA, OpenCL
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Biometrics and AI Research Scientist
Pasadena, California, United States
$137k-$228k/yr HybridFull Time
Thales
ThalesEuronext Paris: HO: Global technology leader in aerospace, defense, and security.
3+ YOEMS+3 years or PhD in EE/CS or related, 3+ years coding in C/C++ and Python, experience with deep learning frameworks (PyTorch, Tensorflow, Onnxruntime, OpenVino), biometrics or CV experience, US Person and authorized to work in the US.
C/C++, Python, PyTorch, Tensorflow, Onnxruntime, OpenVino, CUDA, OpenCL
3w
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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
AVEVA
AVEVA: Global leader in industrial software and digital transformation solutions.
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
2w
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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
Stellarus
Stellarus: Nonprofit California health plan providing insurance coverage to individuals, families, employers, and public-program members.
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
1mo
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Artificial Intelligence Scientist IV
Los Angeles or Irvine
$208k-$354k/yr OnsiteFull Time
Capital Group
Capital Group: Provides investment management services globally.
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
9h
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Research Scientist Graduate (Conversational AI)- 2027 Start (PhD)
Seattle or Los Angeles or Singapore or New York City or London or Dublin or Paris or Berlin or Dubai or Jakarta or Seoul or Tokyo
$154k-$301k/yr OnsiteFull Time
TikTok
TikTok: Short-form mobile video and social media platform.
Completing or recently completed PhD in CS, AI, math, quantitative science, or related field; strong Python and one of C++, Go, Rust, or Java; hands-on LLM or agent experience and statistical literacy.
Python, C++, Go, Rust, Java, SFT, DPO, RLHF, RLAIF, RLVR, MCP, vLLM, TensorRT-LLM, MoE, Kaggle, ACM-ICPC
5d
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Scientist 2
Pasadena or San Diego or California
$118k-$150k/yr OnsiteFull Time
Xencor
XencorNASDAQ: XNCR: Public clinical-stage biopharmaceutical developing engineered antibody medicines for patients with cancer and autoimmune diseases.
3+ YOEPh.D. in a relevant scientific field and 3+ years of post-graduate laboratory experience. Requires yeast display, molecular cloning, NGS, antibody optimization, data analysis, and laboratory safety expertise.
NGS, Geneious Prime, Sequencher, AI, ML, Benchling, Microsoft Word, Microsoft Excel, Microsoft Outlook, Microsoft PowerPoint, Spotfire, FloJo, GraphPad Prism, electronic notebook, microscopes, centrifuges, spectrophotometers, balances, pH meters, electrophoresis equipment, freezers, incubators
1w
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Data Scientist Advisor
Rosemead, California, United States
HybridFull Time
Southern California Edison
Southern California Edison: Electric utility serving Southern, Central, and Coastal California.
5+ YOEBachelor's degree in a quantitative discipline and 5+ years of data analytics experience. Requires advanced AI/ML, modeling, deployment, data integration, stakeholder, and technical leadership expertise.
Computer Vision, AI, Machine Learning (ML), Generative AI, Agentic AI, Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), MLOps, GCP, Azure, AWS, CI/CD, LiDAR
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 ReutersTSX, NASDAQ: TRI: Global provider of trusted information, software, and news.
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
2w
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Senior Data Scientist
New York City or Milwaukee or Dallas or Columbus or Kirkland or Cincinnati or Cleveland or Oklahoma City or Austin or Albany or Chicago or St. Petersburg or Hartford or Pittsburgh or St. Louis or Miami or Sacramento or Raleigh or Minneapolis or Mountain View or Scottsdale or San Francisco or Morristown or Denver or Boston or Philadelphia or Des Moines or Overland Park or Los Angeles or Charlotte or Walnut Creek or Carmel or Seattle or Houston or Arlington or Atlanta or Redmond or Bentonville or Beaverton or Nashville or Detroit or San Diego
$87k-$294k/yr HybridFull Time
Accenture
AccentureNYSE: ACN: Global professional services delivering 360° value.
6+ YOE6+ years in data science, AI, analytics, Responsible AI, or consulting; bachelor's or master's in a quantitative field; Python, SQL, machine learning, generative AI, governance, and client leadership experience.
Python, pandas, NumPy, scikit-learn, PyTorch, TensorFlow, XGBoost, SQL, MLOps, GenAIOps, LLMOps, AWS, Microsoft Azure, Google Cloud
1w
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Data Scientist
San Francisco or Los Angeles or Washington or San Diego or Seattle or London
$150k-$170k/yr HybridFull Time
CHAOS Industries
CHAOS Industries: Redefining modern defense with a multi-product portfolio.
2+ YOEBS/MS in a technical field, 2+ years software development, strong Python, production systems, AI/ML integration, model evaluation, APIs, distributed systems, containers, CI/CD, and observability.
Python, APIs, CI/CD, GPU
1w
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Data Scientist Advisor
Rosemead, California, United States
$162k-$243k/yr HybridFull Time
Southern California Edison
Southern California Edison: Electric utility serving Southern, Central, and Coastal California.
5+ YOEBachelor's degree in a quantitative discipline and 5+ years of data analytics experience; advanced AI/ML, model deployment, MLOps, cloud platforms, and stakeholder leadership preferred.
Artificial Intelligence (AI), Machine Learning (ML), Generative AI, Agentic AI, large language models (LLMs), retrieval-augmented generation (RAG), MLOps, GCP, Microsoft Azure, AWS, CI/CD, LiDAR
1w
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Research Scientist, Quantum Error Correction, Quantum AI
Goleta or Los Angeles
$147k-$210k/yr OnsiteFull Time
Google
GoogleNASDAQ: GOOG, GOOGL: Global technology specializing in internet-related services and products.
PhD or equivalent practical experience, quantum error-correction research publications, and preferred experience owning research agendas.
Low-Density Parity-Check (LDPC)
3w
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Staff Data Scientist
Santa Monica or Brooklyn or San Francisco or Los Angeles or New York City
$200k-$230k/yr HybridFull Time
Radix Health
Radix Health: Healthcare technology helping providers achieve fair reimbursement through integrated IDR software, data, and AI.
Strong applied data science and optimization experience; production modeling, experimentation, Python, AI-native workflows, and ability to partner with engineers to productionize decisioning systems.
Python