Information for EffiSciences

Table of contents

Basic information

Item Value
Donations List Website (data still preliminary)

Positions count by year

Hover over a name to see the position and date range. This table only includes positions where at least the start date is known. The positions count can count the same person multiple times if they held different positions; similarly, the list of staff may include the same person multiple times if they held more than one position during a single year. For each year, a person is included if they were at the organization for any part of the year; this means the actual staff count at any point during the year can be lower (or higher, if some staff held multiple positions in a single year).

Year Positions count Researchers General staff Associates Board members Advisors
2022 3 Diane Letourneur, Léo Dana, Lola Elissalde
2023 8 Leo Karoubi Diane Letourneur, Florent Berthet, Léo Dana, Lola Elissalde Jonathan Claybrough, Manuel Bimich Manuel Bimich
2024 10 Jérémy Andréoletti, Leo Karoubi Diane Letourneur, Florent Berthet, Léo Dana, Lola Elissalde, Manuel Bimich, Michel Brun Jonathan Claybrough, Manuel Bimich
2025 11 Jérémy Andréoletti, Leo Karoubi Charbel-Raphaël Ségerie, Diane Letourneur, Florent Berthet, Léo Dana, Lola Elissalde, Manuel Bimich, Michel Brun Antoine Sérandour, Jonathan Claybrough

Number of full-time staff at the beginning each year

The following table lists some dates and people who were at the organization on the given date (namely, the start of the year). The table may not list every person who worked for the organization (e.g. they could have joined and left in the middle of a single year). This table excludes associates, interns, advisors, and board members.

Date Staff count Staff
2022-01-01 2 Diane Letourneur, Léo Dana
2023-01-01 4 Diane Letourneur, Léo Dana, Leo Karoubi, Lola Elissalde
2024-01-01 5 Diane Letourneur, Florent Berthet, Léo Dana, Leo Karoubi, Lola Elissalde
2025-01-01 8 Diane Letourneur, Florent Berthet, Jérémy Andréoletti, Léo Dana, Leo Karoubi, Lola Elissalde, Manuel Bimich, Michel Brun

Full history of additions and subtractions

This table shows the full change history of positions. Each row corresponds to at least one addition or removal of a position. Additions are in green and subtractions are in red. If a position name changed, it is listed simultaneously as an addition (of the new name) and removal (of the old name) and colored yellow. Additionally there are faded variants of each color for visited links.

Date Number of positions Number of positions added Number of positions removed Positions added Positions removed
2022-01-01 2 2 0 Diane Letourneur, Léo Dana
2022-09-01 3 1 0 Lola Elissalde
2023-01-01 4 1 0 Leo Karoubi
2023-05-01 5 1 0 Manuel Bimich
2023-08-01 6 1 0 Florent Berthet
2023-10-01 8 2 0 Jonathan Claybrough, Manuel Bimich
2023-11-01 7 0 -1 Manuel Bimich
2024-02-01 8 1 0 Manuel Bimich
2024-03-01 8 1 -1 Jérémy Andréoletti Manuel Bimich
2024-06-01 9 1 0 Michel Brun
2025-06-01 11 2 0 Antoine Sérandour, Charbel-Raphaël Ségerie

List of people (13 positions)

Person Title Start date End date Employment type Source Notes
Florent Berthet Executive Director 2023-08-01 [1], [2]
Lola Elissalde Administrative and Communication 2022-09-01 [3], [2]
Charbel-Raphaël Ségerie Head of AI Unit 2025-06-01 [2]
Diane Letourneur Head of Biorisk Unit 2022-01-01 [4], [2]
Jérémy Andréoletti Head of mission-driven research Unit 2024-03-01 [5], [2]
Manuel Bimich AI Strategy Director 2024-02-01 [6], [2]
Jonathan Claybrough Board Member 2023-10-01 board member [7], [2]
Antoine Sérandour Board Member 2025-06-01 board member [2]
Michel Brun Member of the Biorisks division 2024-06-01 [8]
Leo Karoubi Mission-driven research unit, Operationnal and IT support 2023-01-01 [9]
Léo Dana Volunteer 2022-01-01 volunteer [10]
Manuel Bimich Board Member 2023-10-01 2024-03-01 board member [6]
Manuel Bimich Advisor 2023-05-01 2023-11-01 advisor [6]

Products (0 products)

Name Creation date Description

Organization documents (0 documents)

Title Publication date Author Publisher Affected organizations Affected people Document scope Cause area Notes

Documents (0 documents)

Title Publication date Author Publisher Affected organizations Affected people Affected agendas Notes

Similar organizations

Organization Number of people in common List of people in common
Centre pour la Sécurité de l'IA 5 Florent Berthet, Lola Elissalde, Manuel Bimich, Jonathan Claybrough, Léo Dana
Centre pour la Sécurité de l"IA - CeSIA 5 Florent Berthet, Lola Elissalde, Manuel Bimich, Jonathan Claybrough, Léo Dana
Centre for Enabling EA Learning and Research 1 Florent Berthet
Effective Altruism Geneva 1 Florent Berthet
AI Standards Lab 1 Jonathan Claybrough
ML4Good 1 Jonathan Claybrough