Katherine is a psychiatrist and philosopher, with an interdisciplinary knowledge of psychology, neuroscience, and philosophy. Her clinical practice has taken her to Afghanistan and DR Congo, with Medicins Sans Frontieres earlier in her career. She has since then practiced General Psychiatry, mainly in the UK, with stints in Australia and New Zealand.

Katherine Rickus has a PhD in Philosophy (Moral Psychology) from Columbia University, and is a psychiatrist specializing in behavioral ethics, organizational culture, and workplace well-being, including emotionally-informed approaches to culture interventions. She has been employed in the healthcare, education, and NGO sectors internationally, and has worked on varied engagements with Principia, including professional services, SMEs, and healthcare. Katherine has extensive teaching and implementation experience in theoretical and practical ethics, and in ethical decision-making.