10 Reddit AI and data science leaders
Roelof van Zwol, EVP, Ads Monetization, ML & Data Science at Reddit, opens this list of Reddit AI and data science leaders, which also includes a vice president of data science, a senior director of AI and ML, and heads and directors of data science and machine learning. A reader can learn how AI and data science leaders work at Reddit from people who have held the role.
Professionals to explore
Benjamin J. Feinberg
LinkedInExperience: Head of Consumer Data Science · Reddit, Inc.
Benjamin J. Feinberg has been Head of Consumer Data Science at Reddit, Inc. since February 2026, and has also held Senior Data Science Manager at Reddit since May 2024. Benjamin J. Feinberg was Senior Data Science Manager at Twitter from 2022 to 2023 and Data Science Manager at Twitter from 2021 to 2022.
Davis King
LinkedInExperience: Director of Machine Learning · Reddit, Inc.
Davis King has been Director of Machine Learning at Reddit, Inc. since October 2026, and has also held Senior ML Manager at Reddit since April 2025, managing auctions and marketplace work. Davis King was Senior Staff Software Engineer, TLM at Google from 2021 to 2025 and Managing Director at Bank of America from 2003 to 2015.
Michelle Kempner
LinkedInExperience: Head of ML Signals, Core Product · Reddit, Inc.
Michelle Kempner has been Head of ML Signals, Core Product at Reddit, Inc. since July 2024, and describes building and scaling human-in-the-loop ML systems and introducing prompt-engineering infrastructure. Michelle Kempner was Director of Product Content at Meta from 2018 to 2024 and VP Publishing & Operations at BuzzFeed from 2014 to 2018.
Nacho Arranz
LinkedInExperience: Head of Core Data Science · Reddit, Inc.
Nacho Arranz has been Head of Core Data Science at Reddit, Inc. since February 2026, covering agentic data science and analytics, analytics engineering, data governance and Reddit ecosystem health. Nacho Arranz held Senior Data Science Manager at Reddit from 2022 to 2026 and Data Science Manager there in 2022.
Pallavi Baral, Ph.D.
LinkedInExperience: Senior Director, Data Science · Reddit, Inc.
Pallavi Baral has been Senior Director, Data Science at Reddit, Inc. since October 2026, and has also held Director, Data Science (Ads, Marketing, Core, Consumer) there since August 2024, leading the Ads Data Science team. Pallavi Baral was Head of Data Science, Ads Marketplace at Microsoft AI from 2013 to 2024.
Roelof van Zwol
LinkedInExperience: EVP, Ads Monetization, ML & Data Science · Reddit, Inc.
Roelof van Zwol has been EVP, Ads Monetization, ML & Data Science at Reddit, Inc. since January 2025. Roelof van Zwol was EVP of Ads Monetization at Reddit from 2024 to 2025, Vice President of Ads Engineering there from 2022 to 2024 and Head of Monetization Sciences and ML Engineering at Pinterest from 2021 to 2022.
Rosa Català
LinkedInExperience: Senior Director, AI & ML · Reddit, Inc.
Rosa Català has been Senior Director, AI & ML at Reddit, Inc. since January 2023, and has also been a Distinguished Engineer there since January 2025. Rosa Català was Director of ML Content & Platforms at Reddit from 2022 to 2023, Head of ML Foundation from 2021 to 2022 and Chief Data Scientist at Engine No. 1 from 2020 to 2021.
Steve McBride
LinkedInExperience: Head of Data Science · Reddit, Inc.
Steve McBride has been Head of Data Science at Reddit, Inc. since September 2026, leading the data science function across experimentation, causal modeling, applied ML, agentic analytics and analytics engineering. Steve McBride was Head of Data Science for Economy and Ads at Roblox from 2022 to 2026 and Director, Device Economics at Amazon from 2020 to 2022.
Suman Chiluveru
LinkedInExperience: Former Head of Data Science and Machine Learning · Reddit, Inc.
Suman Chiluveru is a former Head of Data Science and Machine Learning at Reddit, Inc., a role held from September 2018 to January 2025. Suman Chiluveru has been VP of Data Science and Machine Learning at DraftKings Inc. since August 2025, leading the DS/ML engineering org, and worked in Data Science at Facebook from 2013 to 2018.
Tyler O.
LinkedInExperience: VP of Data Science and Safety · Reddit, Inc.
Tyler O. has been VP of Data Science and Safety at Reddit, Inc. since April 2023. Tyler O. was Head of Safety at Reddit from 2022 to 2023, Senior Director of Safety Enforcement from 2020 to 2022 and Director of Threat Detection and Safety Data Science from 2017 to 2020.
Choose the right perspective
Match the person's area, such as ads machine learning, safety data science, consumer or core data science, or ML signals for the product, to the decision you face. Check when each person's current role started, and whether the person is former, to judge how recent their view of the work is.
Questions to take into the conversation
- 01How do you decide which product or ads problems get a machine learning model first?
- 02What has worked for you in organizing data scientists and machine learning engineers around product teams?
- 03How do you measure whether a data science or machine learning effort changed a business result?
Reaching Reddit AI and data science leaders
How can I contact one of these Reddit AI and data science leaders?
Pick one of the 10 people on this page and choose "Book a paid call", or describe your project to find others. You offer a fee for a 15-minute call or a written answer, Instant Expert finds the person's work email and sends the invitation, and they decide whether to accept. The list covers 1 company: Reddit, Inc., based on profile data retrieved on October 26, 2026. Being listed here doesn't mean someone has agreed to take calls.
How much does it cost to reach Reddit AI and data science leaders?
You choose the offer, starting at $5 per person. The offer is what the person receives, and Instant Expert's fee is added on top, so a $100 offer costs you $125. The fee is 20% of what you pay. You're charged only when the person books the call or sends the answer.
What if they don't reply?
You pay nothing. Instant Expert sends follow-up reminders, and if the person hasn't booked or answered within 7 days, the request expires and any hold on your card is released. You can invite several of the 10 people on this list at once and cap your total spend, so you pay only for the ones who accept.
Can an AI agent ask one of these Reddit AI and data science leaders a question?
Yes. An agent with a USDC wallet on Base can ask one question without an Instant Expert account. It names the person, for example by the LinkedIn URL on this page, and pays per ask over x402 (HTTP 402). The person answers in writing or by voice note, and if nobody answers within 7 days, the payment goes back to the wallet automatically. Claude and ChatGPT can do the same through the Instant Expert connector: setup is at /docs/mcp for Claude and /docs/chatgpt for ChatGPT. x402 docs
About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot; roles marked former had ended by then. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.