We offer a 3-years PhD position (for UK or French nationals only) for a motivated researcher to join our work on applications of quantum magnetometry to complex 2D materials and heterostructures. This is a joint PhD position with the group of Prof Jean-Francois Roch at ENS Saclay, and the student will have the opportunity to spend a (fully-funded) research stay in Paris. The proposed project involves using state-of-the-art quantum magnetometer, based on a sensor as small as a single spin, to map magnetism in complex 2D heterostructures.