20 applied data scientist jobs at 15 companies in Downey, CA
6d
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Staff Applied Scientist, AdTech
Los Angeles or Portland or San Diego or Seattle
$175k-$200k/yr RemoteFull Time
5+ YOE5+ years applied data science in digital/performance marketing or leadgen; adtech modeling (bandits, recommender, LTV); ML solutions deployed in AWS; expert Python and SQL; strong business impact focus.
Python, SQL, AWS, Looker, Google, Meta, LLMs
12h
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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
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
3w
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Data Scientist, Principal
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
$182k-$273k/yr HybridFull Time
8+ YOEAdvanced experience in applied AI/ML and software development, strong Python engineering, hands-on with deep learning and LLM frameworks, experience building production AI applications and leading ML design.
Python, PyTorch, TensorFlow, LangChain, LangGraph, SQL, Spark, Azure, Google Cloud, AWS
1mo
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Data Scientist: Mission Engineering
El Segundo or Los Angeles
$140k-$220k/yr OnsiteFull Time
7+ YOEBachelor's degree (or equivalent) in a quantitative field, 7+ years applying advanced statistical and data-science methods, Python expertise with scientific/ML libraries, experimental design, uncertainty quantification, scalable pipelines, and eligibility for Top Secret/SCI clearance.
Python, Pandas, Polars, NumPy, SciPy, Scikit-Learn, Statsmodels, PyMC, Matplotlib, Seaborn, CuPy, PyTorch, MATLAB, R, Linux, AFSIM, ESAMS, Brawler, Ansys STK, HPC
1mo
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Scientist - Applied Laser Physics
Foothill Ranch, California, United States
$115k-$155k/yr OnsiteFull Time
PhD in Physics/Applied Physics/Optical Engineering required; established experience with optical diagnostics and laser systems in plasma or accelerator environments; expertise in interferometry and Thomson scattering; strong mentoring and data-interpretation skills.
4d
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Senior Data Scientist - Detection & Modeling
Santa Monica, California, United States
$190k-$290k/yr OnsiteFull Time
Experience in feature engineering and applied ML on transactional/time-series data, anomaly detection (unsupervised), strong statistics, production ML, and domain familiarity in fraud/risk or market surveillance.
isolation forests, density-based methods, autoencoders, FIX
2mo
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Applied Scientist II, Search Ranking
Seattle or Irvine or Palo Alto
$143k-$222k/yr OnsiteFull Time
4+ YOEPhD or Master's +4 years in CS/CE/ML or related field; programming experience in Java, C++, or Python; strong background in algorithms, optimization, data mining, distributed computing; experience with ML/deep learning and scientific publication.
Java, C++, Python, Unix, Linux, MXNet, TensorFlow, Caffe, PyTorch
1mo
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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
4w
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Lead Data Scientist (Agentic Solutions)
Irvine or El Segundo
$171k-$214k/yr OnsiteFull Time
5+ YOE5+ years in ML or applied data science; expertise with agentic frameworks, SLMs, LoRA/QLoRA, token-efficient architectures; expert Python and strong SQL; Bachelor's required (Master/PhD preferred).
LangChain, LlamaIndex, Haystack, Phi, Mistral, Gemma, LoRA, QLoRA, Python, SQL, Databricks, Spark, Delta Lake, Snowplow
3w
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Jr. Data Scientist, Business Analytics & Research
Universal City, California, United States
$70k-$85k/yr HybridFull Time
2+ YOEBachelor's in a quantitative field,2+ years applying quantitative analysis,proficiency in SQL and Python or R,statistical modeling knowledge,experience with Tableau or Power BI,Microsoft Excel and PowerPoint.
SQL, Python, R, Tableau, Power BI, Microsoft Excel, Microsoft PowerPoint
2mo
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Sr. Data Scientist (Irvine, CA, US)
Irvine, California, United States
$114k-$220k/yr OnsiteFull Time
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
6d
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Senior Data Scientist, Forecasting and Analytics
Dallas or New York City or San Jose or Newport Beach
$107k-$176k/yr HybridFull Time
7+ YOE7+ years applying data science, forecasting, and ML; strong Python and SQL skills; time-series and forecasting expertise; ability to translate analysis into business recommendations; experience with cloud data platforms preferred.
Python, SQL, Databricks, Snowflake, BigQuery
3w
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Senior Data Scientist, Model Risk & Data Analytics, Internal Audit - AMS
Los Angeles, California, United States
$130k-$278k/yr OnsiteFull Time
5+ YOE5+ years applied data science/ML experience with LLMs and traditional models, bachelor's in quantitative field, strong SQL and Python skills, experience auditing models and building data pipelines.
SQL, Python, Hugging Face Transformers, TensorFlow, PyTorch, scikit-learn, AWS, GCP, Azure, Snowflake, Hadoop, Flink, MapReduce, LLMAuditor
2mo
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Applied Artificial Intelligence Scientist III (Los Angeles, CA, US, 90017)
Los Angeles, California, United States
$135k-$216k/yr OnsiteFull Time
6+ YOE6+ years in ML/AI in healthcare/enterprise; full AI lifecycle; Python, ML frameworks; production deployment; mentorship; cross-functional collaboration.
Python, Pandas, Scikit-learn, PySpark, Spark, Snowflake, Azure ML, Databricks, LangChain, OpenAI APIs, Azure OpenAI, Git
6d
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Process Development Senior Scientist – Drug Product Technologies
Thousand Oaks, California, United States
$126k-$171k/yr OnsiteFull Time
Expertise in biologics drug product formulation, stability, process development and analytical characterization; experience with ADCs or oligonucleotides preferred; applies AI/ML and data-driven tools; authors technical and regulatory documents.
AI/ML, LLMs, UPLC, HPLC, SEC, IEX, RP-HPLC, HIC, CE-SDS, LC-MS
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