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605 sr scientist jobs at 255 companies in Norwalk, 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 asset management firm providing investment 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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Sr Data Scientist
New York, New York, United States
$144k-$213k/yr HybridFull Time
PayPal
PayPalNASDAQ: PYPL: Global digital payment platform for consumers and businesses.
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: AI-enabled precision medicine and health technology.
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: Multinational technology focused on e-commerce and cloud computing.
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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2w
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Sr. Assoc. Scientist
Hawthorne, New York, United States
$80k-$131k/yr OnsiteFull Time
Regeneron Pharmaceuticals
Regeneron PharmaceuticalsNASDAQ: REGN: Biotechnology discovering and developing life-transforming medicines.
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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1mo
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Sr Data Scientist
Stamford or Irving
$113k-$147k/yr HybridFull Time
Gartner
GartnerNYSE: IT: Global research and advisory firm providing business and technology insights.
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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Sr Data Scientist
Stamford or Irving
$113k-$147k/yr HybridFull Time
Gartner
GartnerNYSE: IT: Global research and advisory firm providing business and technology insights.
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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2w
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Sr. Assoc. Scientist
Hawthorne, New York, United States
$80k-$131k/yr OnsiteFull Time
Regeneron Pharmaceuticals
Regeneron PharmaceuticalsNASDAQ: REGN: Biotechnology discovering and developing life-transforming medicines.
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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3mo
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Sr Data Scientist
New York City, New York, United States
$144k-$213k/yr HybridFull Time
PayPal
PayPalNASDAQ: PYPL: Global digital payment platform for consumers and businesses.
3+ YOE3+ years relevant experience and a Bachelor’s degree OR any equivalent education/experience.
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Scientist/Sr. Scientist - Microdialysis (Paramus, US, 07652)
Paramus, New Jersey, United States
HybridFull Time
PsychoGenics
PsychoGenics: Preclinical CNS contract research organization serving biopharmaceutical companies with AI-enabled drug discovery and translational research.
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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Data Scientist
New York City, New York, United States
OnsiteFull Time
Alliance
Alliance: Crypto and fintech startup accelerator and founder community helping startups reach product-market fit.
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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1w
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Temp Sr Associate Scientist
Tarrytown, New York, United States
$51-$60/hr OnsiteFull Time, Contract
Regeneron Pharmaceuticals
Regeneron PharmaceuticalsNASDAQ: REGN: Biotechnology discovering and developing life-transforming medicines.
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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2w
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Sr. Data Scientist
New York City, New York, United States
$162k-$176k/yr HybridFull Time
Lemonade
LemonadeNYSE: LMND: Public AI-first insurance providing renters, homeowners, car, pet, and life insurance to consumers.
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: TV streaming platform powering the global television ecosystem.
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: Science developing advanced materials and specialty chemical solutions.
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: Private fintech platform that enriches transaction data for banks, fintechs, platforms, and AI companies.
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, Apple Ads
New York City, New York, United States
OnsiteFull Time
Apple
AppleNASDAQ: AAPL: Designing and manufacturing consumer electronics, software, and digital 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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Sr Medical Scientist - Infectious Disease - HIV
New York City, New York, United States
$80k-$140k/yr RemoteFull Time
Syneos Health
Syneos Health: Integrated biopharmaceutical solutions from lab to life.
Provides clinical and scientific input to clinical development programs, supporting trial design, medical data review, endpoint development, safety oversight, and scientific documentation in collaboration with Medical Directors and study teams.
International Committee on Harmonization (ICH), Good Clinical Practices (GCPs), EDC, DRP, CRFs, CSR, Medical Management Plan, Medical Data Review Plan, Eligibility Review Plan, SMP
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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: Global professional services network providing audit, tax, and consulting services.
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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2mo
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Scientist / Sr. Scientist, R&D; Drug Product
Hauppauge, New York, United States
$75k-$125k/yr OnsiteFull Time
Contract Pharmacal Corp
Contract Pharmacal Corp: Private U.S. CDMO developing, manufacturing, and packaging solid-dose drugs, OTC medicines, and dietary supplements for brands.
BS or MS in Pharmaceutical Sciences (or related), pharmaceutical R&D formulation experience, knowledge of cGMP and formulation equipment, strong oral/written communication and MS Office skills, project leadership and limited supervisory experience.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, blender, fluid bed dryer, high shear granulator, tablet press
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