marimo @marimo.io An open-source reactive Python notebook: reproducible, git-friendly, execute as scripts, share as apps!
GitHub: https://github.com/marimo-team/marimo
Discord: https://marimo.io/discord?ref=bsky
Akshay Agrawal @akshaykagrawal.bsky.social Building the @marimo.io notebook: https://github.com/marimo-team/marimo.
PyMDE, CVXPY, & ex TensorFlow developer. Minimum-Distortion Embedding book author. Stanford BS/MS/PhD.
Wes McKinney @wesmckinney.com Principal Architect @posit.co, GP Composed Ventures, Co-founder Voltron Data. Open source: Apache Arrow, pandas, Ibis. "Python for Data Analysis" book
Mark Downie @poppastring.com ๐ง๐พโ๐ปOSS (dasBlog)
๐ขPM @ Microsoft (Visual Studio, Core AI)
๐๐๐ธ
โ๏ธ
๐ด๓ ง๓ ข๓ ฅ๓ ฎ๓ ง๓ ฟ ๐บ๐ธ
poppastring.com/blog
Andy Pavlo @andypavlo.bsky.social Associate Prof. of Databases @ Carnegie Mellon.
@marcogorelli.bsky.social @marcogorelli.bsky.social Senior Software Engineer at Quansight Labs
Pretty focused on Narwhals and Polars these days, generally interested in dataframes and time series
Paul Allen ๐๐จ๐ฆ @paulallen.ca Clinical director of intensive mental health services for children and youth in Canada (ret.). Believer in Truth and Reconciliation. Denier of Denialism. Student of semantics and statistics. "AI" too.
Jeremy Howard @howard.fm https://Answer.AI & https://fast.ai founding CEO; previous: hon professor @ UQ; leader of masks4all; founding CEO Enlitic; founding president Kaggle; various other stuffโฆ
Polars @pola.rs Dataframes powered by a multithreaded, vectorized query engine, written in Rust.
Ritchie Vink @ritchie46.bsky.social Author and Founder of Polars
David Hewitt @davidhewitt.dev Developing PyO3 to bring Rust ๐ฆ and Python ๐ together.
Working with the team at Pydantic to build software that developers love.
Simon Willison @simonwillison.net Independent AI researcher, creator of datasette.io and llm.datasette.io, building open source tools for data journalism, writing about a lot of stuff at https://simonwillison.net/
Hamel Husain @hamel.bsky.social evals evals evals. https://evals.info
Samuel Colvin @sa.muelcolvin.com Building Pydantic Logfire - uncomplicated observability for Python. Sequoia Scout.- T Tom Cunningham @testingham.bsky.social Economics Research at OpenAI.
Uwe Korn @xhochy.bsky.social 
Mimoune Djouallah @mimdj.bsky.social #MicrosofFabric Customer advocate, interests in Small Data & Self Service #Microsoftemployee since Dec 2023 , but my tweets are my own
Susan Athey @susanathey.bsky.social Economist
Brian Lui @brianlui.bsky.social I blog about making correct decisions. I used to be an equity research analyst and portfolio manager. I run on chaos energy, please be understanding
Jeremiah Lowin @jlowin.dev CEO @prefect.io. Building FastMCP. Mostly harmless.
Armin Ronacher @mitsuhiko.at Creator of Flask โข earendil.com โฅ๏ธ writing and giving talks โข Excited about AI โข Husband and father of three โข Inhabits Vienna; Liberal Spirit โข โmore nuanced in personโ โข More AI content on https://x.com/mitsuhiko
More stuff: https://ronacher.eu/
David Robinson @drob.bsky.social Member of Technical Staff at Anthropic. #rstats fan. Dad x2. He/him
๐ฅpdrm๐ฃ @pedramnavid.com chief dashboard officer at dagster, professional birdwatcher, certified vibes analyst
Victoriano Izquierdo @victoriano.bsky.social Graphext co-founder.
Data Stuff ๐ & Product ๐ฆ
graphext.com - @graphext.bsky.social
victoriano.me
twitter.com/victorianoi
Abe Gong @abegong.com geek dad with a clipboard
founder @ Katabase and Great Expectations
operating advisor @ Bessemer VP
data, ai, startups, dev tools, systems thinking
storytelling, community, creativity
blog.abegong.com
Alan Au @alanau.bsky.social Trickster disciple. ๐ฆ Game developer. ๐ฒ๏ธโ Emeritus data generalist. ๐ Delightfully imperfect. โ๏ธ Not that kind of doctor. ๐ [E] Itsatrap ๐ฎ He/Him
Benjamin Garvey @bengarvey.com CTO @ Common Paper / #phillydataviz / Collingswood / Philly / Twin Peaks obsessor / he / him
Emily Riederer @emilyriederer.bsky.social Here for data, data science, analytics engineering, rstats, books
Julien Le Dem @julien.ledem.net Principal Engineer, Founder, Angel, Advisor, OSS.
LFAI&data: OpenLineage, Marquez, ASF: Parquet, Arrow, Iceberg, ๐
he/him.
Me: https://julien.ledem.net/
Blog: https://sympathetic.ink
Otis Anderson @oldjacket.bsky.social Californian in New Hampshire. Very much a dad. Several seemingly unrelated topics! Data, analytics, SF Giants baseball, health care, econ. Occasional political outbursts. Sorry.
Greg Schivley @gschivley.bsky.social Energy systems data, code, hiking, bikes, and more. Building stuff in the ZERO Lab at Princeton.
Data Science Renee @becomingdatasci.bsky.social Author of SQL for Data Scientists (Wiley), Senior Director of Data Science at HelioCampus, creator of Becoming a Data Scientist podcast
She/her
https://sqlfordatascientists.com
Q McCallum @qethanm.bsky.social NEW BOOK: Twin Wolves: Balancing risk and reward to make the most of AI
https://twinwolvesai.com/
research: (ML+gen)AI, risk, complexity, finance history
work: https://WorkWithQ.com
newsletter: https://complex-machinery.com
(some posts in ๐ซ๐ท ๐ฉ๐ช ๐ท๐บ)
Paul @left-semi-join.bsky.social Anzelovich on ๐ฆ๐ฆฃ. Interests: Data Science/Engineering, Python, YIMBY, bikes, cats. Living in SATX.
Tim @tim.hochberg.io 
James Felix Black @tft.io A large person, in Canada. Father to two, smaller persons. Wife guy. Dual citizen, a modicum of discipline.
Proud liberal. Hobbesian. Unix apostate, Classic Mac OS revanchist, tilter at path-dependent windmills. Emacsist.
David Asboth @davidasboth.com Data generalist, educator, author of The Well-Grounded Data Analyst (Manning, 2025). Co-host of the Half Stack Data Science podcast.
Jenna Jordan @jennajordan.me Data engineer in practice, data librarian at heart.
Knitter, dog momma, board gamer, and consumer of sci-fi/fantasy of all mediums.
Civic tech, data for good, peace/conflict data, and philosophizing thru data modeling
https://jennajordan.me
Nicolรฒ Giso @nicologiso.com Making memes, working with data and writing code!
๐๐ Data Engineer/Scientist
Blog at nicologiso.com
Projects: whilemodeltrains.com & @italianartbot.bsky.social
๐ฎ๐น๐๐
Pavel @spavel.bsky.social Raised gifted; non-practicing.
If your reply doesn't have alt text, I won't see it.
๐ productpicnic.beehiiv.com ๐ผ UX Design ๐ฆ Sick of rectangles ๐ง he/him
Joey Schafer @schafer.bsky.social UW-Seattle PhD candidate, studying online attention dynamics & creators/influencers @ HCDE/CIP, advised by @katestarbird.bsky.social . Former SETS Fellow @ Cornell Tech, working w/ @informor.bsky.social . UAW 4121 ASE Recording Secretary. He/Him
Tyler Burch @tylerjamesburch.com Tired but hydrated. Lead Data Analyst for the Boston Red Sox. Recovering physicist. Formerly: Argonne, CERN (ATLAS), NIU, Murray State, St. Louis-ish
Dr. Michael von Forstner ๐ช๐บ๐จ๐ญ @epiguy.bsky.social Comments on pharmacoepidemiology/pharmacovigilance/drug development/(immuno)oncology/philosophy of science/hunting/fly-fishing/horses/dogs/falcons/mountains/skiing/wine/food/opera/literature - BlueSky Elder - Savage, Liberal, I/ENTP๐จ๐ญ๐ฆ๐น๐ฌ๐ง- A @avp-avp.bsky.social @avp-avp.bsky.social
Evgeniya Zhadyaeva @zhadyaeva.bsky.social - N Nikita @nroke.bsky.social
Saeed Esmaili @saeedesmaili.com Data Scientist at Spotify
Interested in AI, LLM, Python.
Blog: https://saeedesmaili.com
David Gasquez @davidgasquez.com Data @ Protocol Labs.
Open Data, Open Source, Open Protocols.
Walks taker. Progressive Metal enjoyer.
davidgasquez.com
Henning @radbrt.eurosky.social Boring is underrated.
๐Norway
Maria Khalusova @mariak.bsky.social Always growing, she/her, RAG builder, LLM whisperer, tech generalist
Ben Labaschin @econoben.dev Machine learning, economics, Chicago -> San Diego
Principal MLE, Workhelix
Tim Hopper @tdhopper.com machine learning infrastructure at spotify
Taylor Murphy @tayloramurphy.dad Arch Data (@arch.dev) Founder/CEO
Meltano maintainer ๐
ex-Data @ GitLab, Concert Genetics
PhD @ Vanderbilt
Paid Data Influence / Actor aka "The Peter Drucker of Data Shitposts"
Husband and Dad ๐ฆ๐ฆ๐ง
Amanda Alvarez @gecky.me tacos ๐ฎ
data ๐
bees ๐
mountains ๐๏ธ๐๏ธ๐ง๐ฝโโ๏ธ
fiber arts ๐ชก๐งต๐งถ
baking ๐ง๐ฐ๐ช๐ฅ๐
helping my kids collect hobbies ๐ทโพ๏ธ๐๐ฝ๐ถ๐คธ๐ฝโโ๏ธ๐ชด๐ฎ
trying to keep it all together ๐๐ท
she/her/ella
em-dashes are my own
Randy Au @randyau.com Hobby consultant, ๐๐ช๐ฎ๐ฅ๏ธ๐๏ธ๐น๐ง๐จโ๐ณ๐ท๐ชโ
Quant UX Researcher
Writes a data newsletter: https://www.counting-stuff.com/
https://linktr.ee/randy_au
Languages: EN/JP/CN
Elijah ben Izzy @eb1.bsky.social Co-creator of Hamilton, CTO/co-founder of DAGWorks. Builds tooling for quants/ML folk, dreams of rebuilding the fence around my house one day. Cute dog and cute wife. 
Chris Albon @chrisalbon.com 
Peter W๐ค @wang.social Anaconda Founder&Head of AI; created the PyData movement, PyScript, Bokeh, Datashader; Fellow @ Python Software Foundation; Center for Humane Tech
Game~B; Physics, Cybernetics, Memetics. A student of the human condition.
Memento mori
karpathy @karpathy.bsky.social AI @ OpenAI, Tesla, Stanford
joelgrus @joelgrus.bsky.social you know what I blame this on the breakdown of? society
Demetri @phdemetri.bsky.social Whoa, everything's computer!
Dean Eckles @eckles.bsky.social networks, contagion, causality
faculty at MIT
Chris Said @csaid.bsky.social Data science at Propel. Formerly Stitch Fix, Opendoor, Twitter, Facebook, neuroscience. https://x.com/chris_said
https://chris-said.io/
Gaรซl Varoquaux @gaelvaroquaux.bsky.social Research & code: Research director @inria
โบData, Health, & Computer science
โบPython coder, (co)founder of scikit-learn, joblib, & @probabl.bsky.social
โบSometimes does art photography
โบPhysics PhD
Lex Fridman @lexfridman.bsky.social Host of Lex Fridman Podcast.
Interested in robots and humans.
Matteo Courthoud @matteocourthoud.bsky.social 
Dominik Moritz @domoritz.de Visualization, data, AI/ML. Professor at CMU (@dig.cmu.edu, @hcii.cmu.edu) and researcher at Apple. Previously @idl.uw.edu. Also sailboats โต๏ธ and chocolate ๐ซ.
www.domoritz.de
Vicki @vickiboykis.com Founding list[float] engineer. Recsys. Personalization. Infra. Systems. Normcore code. Nutella. Vectors. Words. Vibes. Bad puns (soon).
https://vickiboykis.com/what_are_embeddings/
Charlie Marsh @crmarsh.com Building Astral: Ruff, uv, and other high-performance Python tools, written in Rust.
Karl Rohe @karlrohe.bsky.social NO KINGS
โOverly optimisticโ ๐ฆฎ in Statistics.
Listening in statistics.
Statistics Professor at UW Madison.
Jake VanderPlas @jakevdp.bsky.social Write code. Mostly Python.
Thomas Wiecki @twiecki.bsky.social That PyMC guy
Sean J Taylor @seanjtaylor.com Data Science, Causal Inference, Economics, Statistics and Machine Learning
Two joys in life:
[1] Learning something interesting about the world
[2] Telling people about it
Model Measurement @OpenAI
Bluesky @bsky.app official Bluesky account (check username๐)
Bugs, feature requests, feedback: support@bsky.app