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363 jobs
Reddit Backed by a16zBacked by Sequoia
201 views 6 hours ago

Principal Data Scientist, Ads

Open 144d RemoteNorth AmericaContractPrincipal Salary + equity 6 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.Licensed NL sponsor — This employer appears on the IND public register of recognised sponsors for work and highly skilled migrants. The recognition belongs to the employer and is not a commitment to sponsor this role.H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.Canada LMIA employer — This employer was issued a positive Labour Market Impact Assessment by Employment and Social Development Canada in the last four quarters, through the High Wage, Global Talent or Permanent Resident streams. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

Reddit is hiring a Principal Data Scientist to lead the long-term scientific strategy for its advertising platform — defining measurement, prediction, and optimization frameworks for ads auctions, targeting, and advertiser LTV. The role relies heavily on statistics, econometrics, causal inference, machine learning, Python/R, and SQL at large scale.

A/B Testing AI Analytics Causal Inference Data Science +5 skills
268K – 365K $
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Reddit Backed by a16zBacked by Sequoia
166 views 6 hours ago

Principal Data Scientist, User Ecosystem

New RemoteNorth AmericaContractPrincipal Salary + equity 5 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.Licensed NL sponsor — This employer appears on the IND public register of recognised sponsors for work and highly skilled migrants. The recognition belongs to the employer and is not a commitment to sponsor this role.H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.Canada LMIA employer — This employer was issued a positive Labour Market Impact Assessment by Employment and Social Development Canada in the last four quarters, through the High Wage, Global Talent or Permanent Resident streams. The approval belongs to the employer and is not a commitment to sponsor this role.
United States

Very senior data science leader at Reddit setting the measurement, modeling, and experimentation strategy for its consumer/user ecosystem — how users discover value, form habits, and deepen engagement across content and communities. Core work spans recommender systems, user/LTV modeling, causal inference, and ML with frameworks like PyTorch or JAX.

AI Causal Inference Data Science Deep Learning JAX +3 skills
313K – 365K $
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Toast
9 hours ago

Principal Fraud Analyst (Data Science), Digital Payments Fraud Strategy US

New RemoteNorth AmericaPrincipal
United States
Remote US

Toast creates technology to help restaurants and local businesses succeed in a digital world, helping business owners operate, increase sales, engage customers, and keep employees happy. Toast is driven by building the…

AI Analytics Data Analytics Data Pipelines Fintech +2 skills
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Roblox Backed by a16zBacked by GreylockBacked by Index Ventures
86 views 11 hours ago

Principal Data Scientist - Safety

Open 27d North AmericaFull-timePrincipal Salary + equity 6 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States
San Mateo, CA

Principal-level data scientist on Roblox's Content Safety team, building prevalence measurement methodologies, ground truth datasets, and causal-inference analyses to quantify and reduce harmful user-generated content across games, avatars, and in-game behaviors. Core stack includes Python/R, SQL, Hive, Spark, and Airflow, partnering with Product, Engineering, Policy, and Legal.

Airflow Analytics Big Data Causal Inference Data Engineering +8 skills
274K – 374K $
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activefence/d5.005
54 views 19 hours ago

Principal Data Scientist

New HybridMENAPrincipal
Israel
Ramat Gan, Tel Aviv District

Principal Data Scientist at a trust, safety & AI-security company, reporting to VP Engineering. A hands-on senior IC who owns technical direction of real-time content-moderation inference, automated GenAI red-teaming, and the Databricks/PySpark MLOps platform, writing code in Python, Rust, and PySpark and leading LLM safety work end to end.

Agentic AI AI Anthropic Claude Code Data Science +16 skills
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Alice
52 views 19 hours ago

Principal Data Scientist

New HybridMENAPrincipal
Israel
Ramat Gan, Tel Aviv District

Senior IC leadership role owning the technical direction of Alice's Data Science group: real-time multi-tenant content-moderation inference, automated GenAI red-teaming, and the Databricks/Spark lakehouse platform. Hands-on in a large Python, Rust, and PySpark monorepo serving NVIDIA Triton inference and multi-provider LLM systems.

Agentic AI AI Anthropic Claude Code Data Science +16 skills
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Trinzic
yesterday

Principal Data Scientist with Security Clearance

New North AmericaPrincipal
United States
Reston, Fairfax County

Principal Data Scientist role at Trinzic, KBR's digital brand, based in Reston, VA, requiring an active security clearance. The person works on data science within KBR's delivery of science, technology, and engineering solutions to government and commercial customers worldwide.
Indus Towers
yesterday

Principal Data Scientist

New APACFull-timePrincipal
India
Gurgaon

Indus Towers is seeking an experienced Principal Data Scientist to lead the development and deployment of advanced AI and machine learning solutions. The role focuses on solving complex business problems using…

AI Analytics AWS Azure CI/CD +24 skills
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MiQ
yesterday

Principal Data Scientist

New HybridAPACFull-timePrincipal
India
Bengaluru

Job Description Role: Principal Data Scientist Location: Bengaluru What you’ll do We’re MiQ, a global programmatic media partner for marketers and agencies. Our people are at the heart of everything we do, so you will…

Agentic AI AI Data Science Distributed Systems Generative AI +5 skills
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icon
yesterday

Principal Clinical Data Science Lead

New RemoteUKFull-timePrincipal
United Kingdom
Reading

Principal Clinical Data Science Lead At ICON Strategic Solutions, you will work in a sponsor-dedicated model, supported by ICON’s global expertise. As the world’s largest FSP organisation, with over 90 sponsor…

Accessibility Data Quality Data Science GCP SAS +1 skills
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Product Madness
yesterday

Principal Data Scientist

New UKPrincipal
United Kingdom
Strand, Central London

Job Description Are you ready to join a world-class team and make a significant impact on the gaming industry? At Aristocrat, we aim to bring happiness to life through the power of play. We seek a Principal Data…
SingHealth
19 views 3 days ago

Associate Principal/Senior/Analyst, Data Science, Group Finance Analytics (Contract)

Open 61d APACContractPrincipal
Singapore

You will champion the development of new data science techniques, methodologies and delivery of analytics projects from planning through to prototyping, testing, implementation and publication. You will identify and…

Analytics Data Analytics Data Science Machine Learning MATLAB +6 skills
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careers.fitch.group
8 views 3 days ago

Principal Data Scientist, Director (New York)

New HybridNorth AmericaPrincipal
United States
New York, NY

As a leading, global financial information services provider, Fitch Group delivers vital credit and risk insights, robust data, and dynamic tools to champion more efficient, transparent financial markets. With over 100…

AI Ai Enablement Analytics AWS AWS Bedrock +21 skills
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Cloudflare Backed by Union Square Ventures
72 views 3 days ago

Principal Data Scientist, Detection

Open 54d HybridNorth America, UKPrincipal 6 questions H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.

Principal-level data scientist on Cloudflare's Detection team: research, design, and evaluate ML models that identify bots, fraud, and malicious activity across Internet-scale traffic, own the detection measurement framework, mentor others, and shape long-term detection strategy. Core stack is Python and SQL in production with applied statistics and ML.

AI Cloudflare Data Science DNS Machine Learning +3 skills
215K – 270K $
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Autotrader
34 views 4 days ago

Principal Data Scientist

Open 26d HybridUKPrincipal 7 questions
United Kingdom
Manchester

Principal Data Scientist setting the direction of Data Science at Autotrader, a UK automotive marketplace: spotting ML opportunities, orchestrating cross-functional data projects, and mentoring the analytics community. Core stack includes Python, Spark, SQL, MLflow, Databricks and GCP. Hybrid role based in Manchester (min 3 days/week in office).

AI Airflow Analytics BigQuery Cloud +10 skills
60K – 80K £
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AbbVie
82 views 4 days ago

Principal Data Scientist

New HybridNorth AmericaPrincipal H-1B sponsor history — This employer has had H-1B petitions approved by USCIS in the last five fiscal years, per the USCIS H-1B Employer Data Hub. The approval belongs to the employer and is not a commitment to sponsor this role.
United States
Mettawa, IL

Senior technical leader for AbbVie's omnichannel engagement analytics, setting the multi-year data science vision for personalized commercial engagement in pharma. Day to day: prototyping with generative AI/agentic tools, building LLM/RAG systems, designing predictive and causal models, and measuring business impact, using Python, SQL, and cloud ML platforms.

A/B Testing Agentic AI Agile AI Analytics +20 skills
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ZoomInfo
96 views 4 days ago

Principal Data Scientist - Product Analytics

Open 137d RemoteNorth AmericaPrincipal 7 questions Licensed UK sponsor — This employer appears on the GOV.UK register of licensed sponsors for the Skilled Worker and related work routes. The licence belongs to the employer and is not a commitment to sponsor this role.
United States

Principal Business Intelligence Analyst at ZoomInfo designs and owns the product-led growth measurement system, analyzing customer behavior to drive product strategy and growth using advanced analytics and AI-native workflows.

AI Analytics Automation Calendly Data Governance +11 skills
137K – 215K $
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Factspan Analytics
44 views 4 days ago

Principal Analyst (Data Scientist)

New RemoteAPACPrincipal
India

Principal-level data scientist at Factspan owning the full ML lifecycle for marketing/consumer analytics: building CLV, churn and segmentation models, running A/B tests and causal inference studies, and driving scalable production ML pipelines with Python, SQL, cloud and MLOps.

A/B Testing Analytics Causal Inference Cloud Data Science +5 skills
1.5M – 3M INR
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iSOCRATES
39 views 4 days ago

Principal - AI & Data Science

New APACPrincipal
India
Bangalore, Mysore, Karnataka

Principal-level AI/ML & Data Science leader who builds and scales the data science function, deploying Generative AI/LLM and NLP solutions plus marketing analytics models (MMM, MTA, propensity) on AWS/GCP for the MADTECH.AI decision-intelligence platform. Based in Bengaluru or Mysuru, India.

A/B Testing AI Ai Enablement Analytics Automation +15 skills
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iSOCRATES
66 views 4 days ago

Principal Engineer - AI & Data Science

New APACPrincipal
India
Bangalore

About the job : The Role : We are looking for a Principal - AI/ML & Data Science to build and lead our AI/ML & Data Science function at the intersection of Generative AI, marketing intelligence, and programmatic media.…

A/B Testing AI Ai Enablement Analytics Automation +15 skills
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