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592 sr scientist jobs at 246 companies in Fairfield, CT

3mo
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Sr AI Data Scientist
New York City or Baltimore
HybridFull Time
T. Rowe Price
T. Rowe PriceNASDAQ: TROW: Global investment management firm providing funds and retirement services.
5+ YOE5+ years in data science/ML; strong Python/Spark; cloud AWS; leadership and mentoring skills.
Python, PySpark, Databricks, Delta Lake, Unity Catalog, MLflow, CI/CD, Pandas, Spark
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3mo
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Sr Data Scientist
New York, New York, United States
$144k-$213k/yr HybridFull Time
PayPal
PayPalNASDAQ: PYPL: Global digital payments platform for consumers and merchants.
3+ YOE3+ years relevant experience and a Bachelor’s degree (or equivalent), experience building advanced data science models, stakeholder collaboration, data quality practices, and mentoring junior scientists.
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3mo
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Sr. Data Scientist, Translational Research
Chicago or Redwood City or New York City
$100k-$175k/yr RemoteFull Time
Tempus AI
Tempus AINASDAQ: TEM: Builds a data platform for AI-powered precision medicine diagnostics.
Senior data scientist with advanced degree, experience in large biomedical datasets, ML, Python/R, cloud, and AI-enabled workflows.
Python, R, AWS, GCP, Docker, Git, Linux, Jupyter, Pandas, NumPy, SciPy, Scikit-learn, GitHub Copilot, Plotly, Flask, Dask
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2w
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Sr Data Scientist, Amazon Publisher Services
New York, New York, United States
$175k-$237k/yr OnsiteFull Time
Amazon
AmazonNASDAQ: AMZN: Global online retail and cloud computing technology provider.
4+ YOEBachelor's degree, 4+ years of data scientist experience, 5+ years using querying or scripting languages, and experience with statistical models such as multinomial logistic regression.
SQL, Python, R, Scala, SAS, Matlab, AWS QuickSight, Tableau, R Shiny
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1w
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Sr. Assoc. Scientist
Hawthorne, New York, United States
$80k-$131k/yr OnsiteFull Time
Regeneron
RegeneronNasdaq: REGN: Discovers and manufactures medicines for serious diseases.
5+ YOEBachelor's degree in a relevant scientific discipline required; master's preferred. Requires 5 years with a BS or 3 with an MS, plus synthesis, purification, analytical characterization, and instrumentation experience.
MerMade, OligoSynt, SEC, AEX, RP-HPLC, RPIP-HPLC, LC-MS, HPLC/UPLC, UV-Vis
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1mo
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Sr Data Scientist
Stamford or Irving
$113k-$147k/yr HybridFull Time
Gartner
GartnerNYSE: IT: Provides business research and advisory services to organizations.
6+ YOERequires 6–8 years of advanced ML engineering and enterprise product development, 2+ years deploying LLMs, 1+ year building agent systems, and a bachelor's degree; Python, AI frameworks, databases, and cloud experience required.
Python, PyTorch, TensorFlow, Hugging Face, LangChain, LangGraph, LlamaIndex, SQL, Oracle, MongoDB, Pinecone, Weaviate, Spark, AWS, Azure ML, Model Context Protocol (MCP)
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1w
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Sr. Assoc. Scientist
Hawthorne, New York, United States
$80k-$131k/yr OnsiteFull Time
Regeneron Pharmaceuticals
Regeneron PharmaceuticalsNASDAQ: REGN: Discovers and develops medicines for serious diseases.
5+ YOEBachelor's degree in chemistry, biochemistry, chemical biology, biology, or related discipline; 5 years' experience with BS or 3 years with MS; solid-phase synthesis and analytical characterization experience preferred.
MerMade, OligoSynt, SEC, AEX, RP-HPLC, RPIP-HPLC, LC-MS, HPLC/UPLC, UV-Vis
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3mo
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Sr Data Scientist
New York City, New York, United States
$144k-$213k/yr HybridFull Time
PayPal
PayPalNASDAQ: PYPL: Digital platform for sending money and processing online payments.
3+ YOE3+ years relevant experience and a Bachelor’s degree OR any equivalent education/experience.
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1mo
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Sr Data Scientist
Stamford or Irving
$113k-$147k/yr HybridFull Time
Gartner
GartnerNYSE: IT: Provides research and advisory services for business leaders.
6+ YOE6+ years in ML engineering and product development, 2+ years deploying LLMs, experience designing agents, proficiency in Python and deep learning frameworks, strong communication and leadership skills.
Python, PyTorch, TensorFlow, Hugging Face, LangChain, LangGraph, LlamaIndex, SQL, Oracle, MongoDB, Pinecone, Weaviate, Spark, AWS, Azure ML, Model Context Protocol (MCP)
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3mo
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Scientist/Sr. Scientist - Microdialysis (Paramus, US, 07652)
Paramus, New Jersey, United States
HybridFull Time
PsychoGenics
PsychoGenics: Provides AI-driven preclinical drug discovery for CNS disorders.
3+ YOEPhD in Neuroscience or Biomedical Engineering; 3-10 years microdialysis experience; leadership experience; experience with standard, push-pull, retro, and quantitative microdialysis; staff training and project leadership.
Matlab, EEGLAB, Python, R, SAS
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1w
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Sr Scientist, Tech
New York City, New York, United States
$181k-$224k/yr HybridFull Time
Uber
UberNYSE: UBER: A technology platform for transportation, delivery, and freight.
3+ YOEMaster's degree in a listed quantitative field and 3 years of experience in experimentation, causal inference, SQL, Python/R, machine learning, data visualization, and scalable data processing.
SQL, Python, R, Tableau, Matplotlib, Apache Spark, PySpark, Scala, Hadoop
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3w
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Data Scientist
New York City, New York, United States
OnsiteFull Time
Alliance
Alliance: An accelerator that backs crypto and AI founders and supports startup growth.
Senior data scientist with strong Python and SQL, production ML experience, data engineering skills, stakeholder communication, and NYC-based or willing to relocate.
Python, SQL, Metabase, LLMs, GitHub
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5d
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Temp Sr Associate Scientist
Tarrytown, New York, United States
$51-$60/hr OnsiteFull Time, Contract
Regeneron
RegeneronNASDAQ: REGN: Develops and commercializes medicines for serious medical conditions.
Hands-on in vivo research experience with mice, dosing, microsurgery, tissue collection and processing, accurate study documentation, collaboration, and animal welfare practices.
IACUC
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1w
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Sr. Data Scientist
New York City, New York, United States
$162k-$176k/yr HybridFull Time
Lemonade
LemonadeNYSE: LMND: Digital insurance provider using AI for policies and claims.
2+ YOERequires 2–4+ years of production data science experience, Python, SQL, advanced AI/ML knowledge, and strong solution-scoping skills; quantitative graduate degree preferred. Must work in Soho, NYC 3 days weekly.
Python, SQL
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2mo
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Sr. Research Data Scientist
Boston or New York City or San Jose
$330k-$375k/yr HybridFull Time
Roku
RokuNASDAQ: ROKU: Operates a TV streaming platform and sells streaming hardware.
10+ YOEPhD preferred in economics/statistics; 10+ years applying causal inference and ML; deep expertise in observational causal methods; proficiency with Spark, Ray, SQL, Python, scikit-learn, XGBoost, LightGBM; experience with terabyte-scale data; strong communication.
Spark, Ray, SQL, Python, scikit-learn, XGBoost, LightGBM
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3w
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Polymer Additives Sr. Application Scientist
Stamford, Connecticut, United States
$112k-$140k/yr OnsiteContract
Syensqo
SyensqoEuronext Brussels: SYENS: Develops specialty chemicals and advanced materials for global industries.
10+ YOEPhD/MSc (or equivalent) in polymer science/chemistry/materials,10+ years in polymer additives application development, expertise in polyolefin stabilization, formulation development, testing, and strong communication skills.
MFR/MFI, DSC/OIT, TGA
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1mo
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Data Scientist (Mid-Sr)
New York City, New York, United States
$175k-$230k/yr HybridFull Time
Spade
Spade: AI platform for enriching and structuring financial transaction data.
3+ YOE3+ years building and shipping models in Python; strong ML, stats, and data fundamentals; experience with PySpark, pandas, SQL; product mindset and collaboration skills; NYC-based, hybrid office attendance.
Python, PySpark, pandas, SQL, Databricks, HexGen
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2mo
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Senior Data Scientist, Recommendations
New York City, New York, United States
$186k-$223k/yr OnsiteFull Time
Match Group
Match GroupNasdaq: MTCH: Provider of a global portfolio of online dating services.
5+ YOE5+ years experience as a data scientist, experience with A/B testing, strong SQL and Python skills (R acceptable), strong statistics and machine learning knowledge, excellent communication and collaboration skills.
SQL, Python, R
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2mo
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Senior Data Scientist, Apple Ads
New York City, New York, United States
OnsiteFull Time
Apple
AppleNASDAQ: AAPL: Designs and sells consumer electronics, software, and online services.
Experienced data scientist skilled in experimentation, statistical modeling, machine learning, and using data to measure, forecast, and optimize advertising across products.
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1w
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Data Scientist Sr. Manager - Consumer Markets
New York City or Grand Rapids or Raleigh or Charlotte or Chicago or Jacksonville or Cincinnati or Cleveland or Dallas or Boston or St. Louis or Birmingham or Stamford or Tampa or Atlanta or Washington or Miami or Milwaukee or Minneapolis or Detroit or Nashville or Buffalo or Florham Park or Orlando or Philadelphia or Pittsburgh or Hartford or Houston
$91k-$322k/yr OnsiteFull Time
PwC
PwC: Providing audit, tax, and management consulting services to businesses.
6+ YOERequires a high school diploma or equivalent and 6+ years of experience; preferred fields include data science, analytics, business, computer science, mathematics, engineering, finance, or related disciplines.
QlikView, Spotfire
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