Sebastien de Halleux

Founder at

Graph Ventures LLC

Technology Services

Communications

Consumer Services

Profile

Sebastien de Halleux is the founder of Playfish Ltd., founded in 2007, where the title held was Chief Operating Officer.
Mr. de Halleux is the founder of Graph Ventures LLC, founded in 2010, holding the title of Founding General Partner.
Mr. de Halleux was the founder of Matchday, Inc., founded in 2021, with the title Chief Gaming Officer from 2022 to 2025.
Former jobs include Operations Director at Glu Mobile LLC, Consultant at Booz Allen Hamilton, Inc., Principal at Macrospace Ltd., Principal at Nokia, Inc., Principal at Nokia IP, Inc., and Chief Operating Officer at Saildrone, Inc. Education includes graduate studies at Imperial College London.

Sebastien de Halleux active positions

Companies	Position	Start
Graph Ventures LLC Graph Ventures LLC Investment ManagersFinance Graph Ventures invests in companies across the globe. The firm invests in broad range of sectors and industries. It provides financing for early stage capital requirements.	Founder	31/05/2010

All active positions of Sebastien de Halleux

Former positions of Sebastien de Halleux

Companies	Position	End
Play Time, Inc. Play Time, Inc. Packaged SoftwareTechnology Services Develops gaming platform designed for football fans and allows users to collect cards and trade in marketplace	Founder	31/08/2025
Nokia IP, Inc.	Corporate Officer/Principal	-
Saildrone, Inc. Saildrone, Inc. Aerospace & DefenseElectronic Technology Develops advanced unmanned surface vehicles, delivering observations and insights about activities above & below the ocean’s surface	Chief Operating Officer	-
Booz Allen Hamilton, Inc. Booz Allen Hamilton, Inc. Packaged SoftwareTechnology Services Builds advanced technology to fast-track results for government—boosting efficiencies, saving money and safeguarding	Corporate Officer/Principal	-
Macrospace Ltd. Macrospace Ltd. Information Technology ServicesTechnology Services Develops and publishes mobile games and provides mobile gaming solutions	Corporate Officer/Principal	-

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Linked companies

Private companies	10
Imperial College London Imperial College London Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Booz Allen Hamilton, Inc. Booz Allen Hamilton, Inc. Packaged SoftwareTechnology Services Builds advanced technology to fast-track results for government—boosting efficiencies, saving money and safeguarding	Technology Services
Macrospace Ltd. Macrospace Ltd. Information Technology ServicesTechnology Services Develops and publishes mobile games and provides mobile gaming solutions	Technology Services
Glu Mobile LLC Glu Mobile LLC Packaged SoftwareTechnology Services Develops and publishes mobile games	Technology Services
Nokia, Inc. Nokia, Inc. Specialty TelecommunicationsCommunications Manufactures mobiles and other telephone equipment	Communications
Nokia IP, Inc.
Playfish Ltd. Playfish Ltd. Specialty TelecommunicationsCommunications Provides online social games	Communications
Graph Ventures LLC Graph Ventures LLC Investment ManagersFinance Graph Ventures invests in companies across the globe. The firm invests in broad range of sectors and industries. It provides financing for early stage capital requirements.	Finance
Saildrone, Inc. Saildrone, Inc. Aerospace & DefenseElectronic Technology Develops advanced unmanned surface vehicles, delivering observations and insights about activities above & below the ocean’s surface	Electronic Technology
Play Time, Inc. Play Time, Inc. Packaged SoftwareTechnology Services Develops gaming platform designed for football fans and allows users to collect cards and trade in marketplace	Technology Services