Tim trained and worked as a lawyer before completing his PhD in philosophy.
His publications include books and articles on the philosophy of law, legal ethics, immunisation programmes, the significance of judicial disagreement, parental rights and medical decisions, the proper allocation of the burden of proof, and the use of predictive analytics in child protection.
He is employed by New Zealand’s Ministry of Social Development to provide data ethics advice and to develop privacy, human rights, and ethical review processes for proposed uses of client data. He has provided ethical reviews of a number of predictive risk modelling tools in New Zealand and the US.
He sits on a number of local and national research and clinical ethics committees.
He is principal investigator on a NZ Royal Society Marsden Grant (2019-2021) investigating the ethics of using predictive risk modelling tools in social policy contexts.