Brendan was admitted to practice in 1998.
Before joining the Flinders Law School in 2010 Brendan practised in native title law and environmental law at the South Australian Crown Solicitor's Office. This included a role as in-house solicitor to the South Australian Environment Protection Authority. He has also practised at a specialist planning and development law firm in Adelaide.
Brendan received a Faculty of Education, Humanities and Law Award for Excellence in Teaching in 2013 and won a Flinders Embedding Transition Pedagogy Principles Across the First Year Curriculum Grant in 2014 ($4000) with Mary Heath and in 2016 ($4000).
In 2014 he was a visiting scholar at the Department of Political Science of the Università Roma Tre, in Rome, Italy.