Andrew joined the school in July 2005 and was appointed Associate Professor in 2019. He was also awarded a Scientia Fellowship in 2019. Andrew teaches postgraduate financial accounting and financial statement analysis. Prior to his appointment at UNSW, Andrew taught at Victoria University of Wellington in New Zealand.

Andrew primarily researchers in financial accounting and financial statement analysis. His research focuses on earnings co-movements and decomposing earnings into market, industry and firm idiosyncratic components. This research has the potential to improve the understanding of the sources of earnings and the degree to which firm’s earnings are related to industry peers. Through his research, Andrew aims to lead to improvements in decision making by users of financial statements, such as improving the ability to forecast future earnings and value assets. He is also interested in how accounting information is used by capital market participants, including issues on earnings co-movements, corporate disclosure, stock return volatility, the timeliness of earnings and asset pricing models. His paper, 'Pierpont and the Capital Market' was awarded a joint share of the Abacus 2009 Manuscript Award.