"Mark's extensive experience in quantum computing and the commercialisation of other emerging technologies will be invaluable to establishing our presence in Europe," said Quantum Brilliance CEO and co-founder Andrew Horsley.
"We are thrilled to welcome Mark to the team and look forward to seeing his successes unfold."
Mattingley-Scott has spent almost 32 years at IBM, most recently as the company's quantum ambassador for EMEA and Asia-Pacific.
His other career highlights include being a member of the core team founded in 1989 at IBM to work on the fledgling worldwide web, managing the team that built the world's first e-commerce platform in 1996, and leading the implementation of the world's first mobile healthcare platform in 2006.
While at IBM Mattingley-Scott served as an adjunct professor at Universität Osnabrück, Ludwig-Maximilians-Universität, Duale Hochschule Baden Würtemberg, and University Frankfurt (all in Germany), teaching a variety of topics including machine learning, analytics, intercultural management, and the psychology of media interaction.
He started his career at Thorn EMI, where he developed circuits and monolithic control electronics, and was granted three patents.
Mattingley-Scott is a senior member of the IEEE, a member of the IEEE European Public Policy Committee, and a member of the NATO Advisory Committee on Emerging and Disruptive Technologies.
He holds an honours degree in computing and electronics, and a PhD in networking technology, both from the University of Durham (UK).
"I joined the Quantum Brilliance team to help fulfill the company's vision of making quantum computing an everyday, useful technology," he said.
"Europe has much to gain from a robust quantum industry, and the addition of a highly disruptive technology such as quantum accelerators will have a major influence on its growth."
"With its strong industrial base and large number of highly-skilled engineers, Germany is particularly well-situated to make a huge contribution to quantum computing," he added.
"Quantum hardware design and manufacturing has the potential to match Germany's auto industry in its breadth and success."