Laurent Francillout joined CNES in 1999 as interplanetary flight dynamics specialist for Mars Sample Return project. Then he joined ESA ATV program in the frame of ISS program where he held various position as Flight Dynamics Team leader, Spacecraft Operation Manager and Flight Director.
In 2017 he took the lead of CNES Space Safety Office for Orbital systems whose mission is to guarantee safety and sustainability of French Orbital operations and balloon flights through regulation, typically French Space law certification and rulemaking.
Since beginning of 2022 he has been nominated Head of Space Security, Safety & Sustainability Division in the CNES Application and Orbital Systems Directorate. This division gathers Safety Office, SSA Office and is in charge of any project related to STM and Space Operation Assurance including On Orbit Servicing.
He is head of French delegation in IADC (Inter Agency Space Debris Co-ordination Committee) and chaired IADC in 2020. He is delegate at COPUOS Scientific and technology subcommittee and is involved in IAA Space Debris Working Group and IAF Space Traffic Management group.