May is an Associate Professor in the School of Private and Commercial Law, Faculty of Law and Justice. Her main research areas are contract law, commercial law, consumer and competition law, unfair contracts, remedies, restitution/unjust enrichment. May is a comparative scholar particularly on Asian law. May's recent research interest is the intersection of law and technology centring on contract and consumer protection.  She teaches at undergraduate and postgraduate levels in a wide range of subjects including contracts and consumer protection. May supervises LLM and PhD candidates and is currently co-supervising PhD candidatures in the areas of smart contracts and modern slavery.   

May is also an Adjunct Professor at the Faculty of Law, Multimedia University and was formerly Deputy Head of School, Thomas More Law School, Australian Catholic University. May was also formerly a Professor and Dean at the Faculty of Law, University of Malaya, and had previously practiced as a commercial litigation lawyer at Kuala Lumpur, Malaysia after being admitted as an Advocate & Solicitor of the High Court of Malaya.

May is author of Australian Contract Law: Principles and Cases (Lawbook Co, 2020) and Contract Law in Malaysia (Sweet & Maxwell Asia, 2010). She is also co-author with Yin Harn Lee, of Civil Remedies (Sweet & Maxwell Asia, 2nd ed, 2016) and with Rafiah Salim, of Evidence Law in Malaysia and Singapore: Cases and Commentary (Lexis Nexis Malaysia, 2013). May has also contributed chapters in four of the six series of Studies in the Contract Laws of Asia (Oxford University Press), and chapters on competition law in The Regionalisation of Competition Law and Policy within the ASEAN Economic Community (Cambridge University Press, 2018) and in Research Handbook on Asian Competition Law (Edward Elgar). She has published peer-reviewed articles in contracts, competition and consumer protection in Oxford University Commonwealth Law Journal, Journal of Contract Law and Competition and Consumer Law Journal, on gender issues in the Journal of Law and Society and Feminist Legal Studies, and in The Indigenous Law Journal.