Our people.

Creative, curious, leaders in their field. We’re made up of incredibly talented people.
Here’s a selection of the ingenious pioneers making beyond possible.

Mark ThomasChief Executive Officer
Longstanding Chartered Engineer, Fellow of the Royal Aeronautical Society, engineering mentor, and our CEO. The global face of Reaction Engines, Mark’s worked on some of the most prestigious projects in aerospace history. Now he inspires our teams to develop world-changing technologies. More about Mark >
Dr Adam DisselPresident, Reaction Engines Inc.
Masters and Ph.D. in Aerospace Engineering, Bachelor’s in mechanical engineering, Member of our global executive leadership team covering international business strategy, investment, and industry collaborations. Adam created and heads our US-based subsidiary, Reaction Engines Inc. More about Adam >
Lisa RudzkiHead of Human Resources
Chartered member of the CIPD with over 15 years’ experience in HR. Lisa heads up our highly talented HR team and plays a vital role in how we attract, select and develop all our employees. More about Lisa >
Tom BurvillApplied Technologies Director
A vital cog in the Reaction Engines machine, Tom heads up our Applied Technologies Division. In charge of generating commercial revenue from our game-changing technologies across the four key sectors of motorsport, energy, electric vehicles and aerospace. More about Tom >
Philippa DaviesTechnical Chief of Staff
Our Technical Chief of Staff with a first-class degree in Aerospace Engineering, Philippa is the originator of our incredible turbomachinery team, and helps our CEO develop strategy to shape the business and carry out in-depth technical research. More about Philippa >
Tom ScropeChief Financial Officer
Natural Sciences degree, Business Administration Masters, Fellow of the Chartered Institute of Accountants, and our Chief Financial Officer. Tom’s responsible for all things financial, playing a vital role in strategic investment, and safeguarding our future. More about Tom >
Alba EspinosaGraduate Engineer
Moved from Spain to follow her dream of becoming an Aerospace Engineer. BEng in Aerospace Engineering and MSc in Advanced Aeronautical Engineering. Highly respected Graduate Engineer with invaluable cross-department knowledge. More about Alba >
Callum TinsonDesign Engineer: part of HX4 team
Apprentice of the Year 2020. Works on cutting-edge technology for the SABRE engine cooling system. Essential part of the HX4 team. Callum helps create heat exchangers that cool rocket engines so they can travel at Mach 5. More about Callum >
James BarthHead of Performance and Aerothermal Engineering
MSc in Space Studies. PhD on improving hydrogen-fuelled scramjet performance. Our Head of Performance and Aerothermal Engineering. James’s obsession is lowering cost and environmental impact of space access and developing SABRE to improve life on earth. More about James >
Michelle KirkSenior Human Resources Advisor
Dedicated to giving every employee the right structure to broaden their experience and progress their careers. As a Senior Human Resources Advisor, Michelle is devoted to employee wellbeing, engagement and development. More about Michelle >
Yashi KuplishAerothermal Engineer
One of our first ever intake of graduates. Specialist in coding development tools. Much valued Aerothermal Engineer. Yashi plays a hugely important role in the cutting-edge engineering in our Applied Technologies division. More about Yashi >