Stephen Millmore studied a BSc in Mathematics with Astronomy, and subsequently received a PhD on "Interfaces in Numerical Relativistic Hydrodynamics" under the supervision of Dr Ian Hawke from the University of Southampton.
He then joined the Laboratory for Scientific Computing at the Cavendish Laboratory in 2012 as a postdoc, working on the numerical simulation of ultrasonically excited water droplets, investigating anti-icing technologies for aircraft. He then expanded his research interests into a variety of multiphysics scenarios for aerospace and clean energy simulation. His work has included simulating lightning strike on aircraft, additive manufacturing processes, tokamak fusion reactors and millimetre wave drilling for deep geothermal energy.
In 2023 he was appointed an assistant teaching professor in the Laboratory for Scientific Computing, where he coordinates the continuum stream of the MPhil in Scientific Computing, and also lectures and supervises research projects.