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This is a directory of the present and past leadership of Project Jupyter.

Executive Council

Alphabetical by first name, names are followed by GitHub usernames and current elected terms.

NameGitHubTerm
Afshin Darian@afshin2023-2026
Chris Holdgraf@choldgraf2025-2026
Jacob Diamond-Reivich@jake-stack2026-2027
Martha Cryan@marthacryan2026-2027
Rick Wagner@rpwagner2025-2026
Zach Sailer@Zsailer2024-2027

Software Steering Council

NameSubprojectGitHub
Angus HollandsJupyter Book@agoose77
Gabriel FouasnonJupyter Accessibility@gabalafou
Johan MabilleJupyter Kernels@johanmabille
Jupyter Security RepresentativeJupyter Security
Martha CryanDEI Standing Committee@marthacryan
Martin RenouVoilà@martinRenou
Michał KrassowskiJupyter Frontends@krassowski
Min Ragan-KelleyJupyterHub and Binder@minrk
Paul IvanovJupyter Foundations and Standards@ivanov
Sylvain CorlayJupyter Widgets@SylvainCorlay
Vidar FauskeJupyter Server@vidartf

Jupyter Foundation Governing Board

NameOrganizationGitHub
Afshin DarianExecutive Council@afshin
Brian GrangerAWS@ellisonbg
Celeste HorganSnowflake@celestehorgan
Chris HoldgrafExecutive Council@choldgraf
Eric JohnsonGoogle@metrizable
Michał KrassowskiGeneral Members@krassowski
Rick WagnerExecutive Council@rpwagner
Rus PandeyApple@bigsur0
Stephanie StattelBloomberg@dharmaquark
Yaniv SchaharMeta@YDawn
Zach SailerExecutive Council@Zsailer

Trademark Subcommittee

NameGitHub
Jason Grout@jasongrout
Min Ragan-Kelley@minrk
Paul Ivanov@ivanov
William Stein@williamstein

DEI Standing Committee

NameGitHub
Martha Cryan@marthacryan
Rosio Reyes@RRosio

Jupyter Community Building Working Group

NameGitHub
April Johnson@aprilmj
Jason Grout@jasongrout
Lahari Chowtoori@LahariChowtoori
Martha Cryan@marthacryan
Matt Fisher@mfisher87
Rosio Reyes@RRosio

Jupyter Media Strategy Working Group

NameGitHub
Andrii Ieroshenko@andrii-i
Jacob Diamond-Reivich@jake-stack
Sylvain Corlay@SylvainCorlay

Union of Councils

The Union of Councils (UoC) is the union of the membership of all Subproject Councils, Standing Committees, and Working Groups. It makes up the voting body that elects members of the Executive Council, the union of council is comprised of at least the following people, though other may be part of the UoC as Councils membership maybe be tracked independently of the governance repo.

NameGitHub
Afshin Darian@afshin
Andrii Ieroshenko@andrii-i
Angus Hollands@agoose77
April Johnson@aprilmj
Brian Granger@ellisonbg
Celeste Horgan@celestehorgan
Chris Holdgraf@choldgraf
Eric Johnson@metrizable
Gabriel Fouasnon@gabalafou
Jacob Diamond-Reivich@jake-stack
Jason Grout@jasongrout
Johan Mabille@johanmabille
Jupyter Security Representative
Lahari Chowtoori@LahariChowtoori
Martha Cryan@marthacryan
Martin Renou@martinRenou
Matt Fisher@mfisher87
Michał Krassowski@krassowski
Min Ragan-Kelley@minrk
Paul Ivanov@ivanov
Rick Wagner@rpwagner
Rosio Reyes@RRosio
Rus Pandey@bigsur0
Stephanie Stattel@dharmaquark
Sylvain Corlay@SylvainCorlay
Vidar Fauske@vidartf
William Stein@williamstein
Yaniv Schahar@YDawn
Zach Sailer@Zsailer

Former Project Jupyter Leadership

Former Executive Council

NameGitHubTerm
Ana Ruvalcaba@Ruv72023-2025
Brian Granger@ellisonbg2023-2024
Fernando Pérez@fperez2023-2024
Jason Grout@jasongrout2023-2025
Steven Silvester@blink10732023

Former DEI Working Group

NameGitHubTerm
Ana Ruvalcaba@Ruv72022-2025
Jason Weill@JasonWeill2022-2024
Lucy Jimenez@LucyJimenez2022-2024

Former Community Building Working Group

NameGitHubTerm
Ana Ruvalcaba@Ruv72018-2025
Rollin Thomas@rcthomas2022-2024

Former Jupyter Foundation Governing Board

NameOrganizationGitHubTerm
Ana RuvalcabaExecutive Council@Ruv72024-2025
Ben BastianGoogle@sagelywizard2024-2025
Jason GroutExecutive Council@jasongrout2024-2025
Savannah OstrowskiSnowflake@savannahostrowski2024-2025

Former Jupyter Media Strategy Working Group

NameGitHubTerm
Ana Ruvalcaba@Ruv72022-2024
Steven Silvester@blink10732022-2024

Former Trademark Subcommittee

NameGitHubTerm
Brian Granger@ellisonbg2017-2025
Matthias Bussonnier@carreau2017-2020
Tim George@tgeorgeux2017-2025

Benevolent Dictator for Life (retired December 2022)

Prior to December 2022, Jupyter was led by a Benevolent Dictator for Life (BDFL) and a Steering Council.

Fernando Pérez (@fperez) was the Benevolent Dictator for Life (BDFL). He voluntarily relinquished his role after Jupyter transitioned to a new governance model in December 2022.

Steering Council (dissolved December 2022)

NameGitHubTerm
Afshin Darian@afshin2018-2022
Ana Ruvalcaba@Ruv72018-2022
Brian Granger@ellisonbgFounding member, 2014-2022
Carol Willing@willingc2017-2022
Damian Avila@damianavilaFounding member, 2014-2022
Fernando Pérez@fperezFounding member, 2014-2022
Jason Grout@jasongrout2015-2022
Jessica Hamrick@jhamrick2015-2022
Jonathan Frederic@jdfreder2016-2018
Kyle Kelley@rgbkrkFounding member, 2014-2022
M Pacer@mpacer2018-2022
Matthias Bussonnier@carreauFounding member, 2014-2022
Min Ragan-Kelley@minrkFounding member, 2014-2022
Paul Ivanov@ivanov2016-2022
Peter Parente@parente2016-2022
Steven Silvester@blink10732016-2022
Sylvain Corlay@SylvainCorlay2016-2022
Thomas Kluyver@takluyverFounding member, 2014-2022

NumFOCUS Subcommittee (dissolved December 2022)

NameGitHubTerm
Ana Ruvalcaba@Ruv7
Fernando Pérez@fperez
Matthias Bussonnier@carreau
Stefan van der Walt@stefanvnon-council member
Thomas Kluyver@takluyver