Executive Team

Mathieu Johnsson - CEO

Before founding Marble, Mat designed next-generation aircraft for Airbus Future Projects, led their metal 3D printing implementation effort, and built a world speed record electric plane in his spare time.

He has an MSc in Aerospace Engineering from Cranfield and is an Entrepreneur First alumni.

Dr Alex Bennetts - CTO

Before joining Marble, Alex led the design and build of a jet-powered stealth UAV for BAE Systems now used as the baseline for the UK’s future jet fighter. 

He has a PhD in Aircraft Electric Propulsion & UAV Systems from Manchester University.

Graeme O'Connor - CCO

Before joining Marble, Graeme spent 8 years at Airbus where he designed next-generation aircraft and led the initial business case for semi-automated operations, before spending 2 years as a transportation strategy consultant for L.E.K.

He has an MSc Aerospace Engineering from Ecole Centrale Lyon and an MBA from London Business School

Dr Will Harley - Lead Aerospace Engineer

Before joining Marble, Will led the aerodynamics and structures design on a jet-powered stealth UAV for BAE Systems now used as the baseline for the UK’s future jet fighter.

He has a PhD in Biomimicry and Experimental Aerodynamics.

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