User Summary from an interview given to ikosa:
Matthieu Gonbert is one of the editors at John Doe editions. Before writing the Deadline campaign, his role at John Doe was mainly centered around giving juridic help around the contracts between John Doe and the authors, give help during the conventions and help choose which projects to publish.
In 2010, his first RPG creation, Deadline, a 12 scenarios standalone campaign was published by John Doe.
Link to the interview, in French: