I am working on the LUX-ZEPLIN project (LZ), which is an international experiment aiming to detect dark matter particles using a 10-tonnes liquid xenon detector. I worked on the assembly of a test cryostat, which is crucial for the commissioning of the cryogenics and xenon circulation systems of the LZ experiment. I am also performing studies of the sensitivity of LZ to dark matter particles, using profile likelihood ratio techniques.