Tamsin has a BScH and a PhD in Biology from Queen's University, with a focus on aquatic ecosystems and environmental change. She has over 30 years of experience working on a wide diversity of environmental biology and aquatic contaminated sites projects.

Tamsin specializes in biological and long-term monitoring, characterization and assessment of aquatic contaminated sites, ecological risk assessment, and guidance development. During her time at ESG, she has conducted numerous aquatic site assessment programs across Canada and designed benthic monitoring programs for evaluating aquatic ecosystem health. With input from other environmental practitioners, she developed and wrote scientific guidance on approaches for managing aquatic contaminated sites and designing long-term monitoring programs that have been adopted across Canada. She has co-supervised graduate and fourth year research projects related to aquatic contaminated sites, and has co-taught graduate courses on ecological risk assessment as well as delivered multiple professional training workshops. Tamsin has conducted many seasons of fieldwork in the Arctic and other locales, supervising sample collection for site assessments, risk assessment, remediation support, long-term monitoring, and conducting risk communication with community stakeholders. She has overseen development of tools and qualitative risk assessment for Species at Risk and invasive alien species management. She has written numerous technical reports on biological and aquatic contaminated sites projects for various federal government departments and the private sector, as well as authored academic scientific publications. Tamsin currently manages all aquatic and biology-related projects at ESG, including supervision and mentoring of technical staff, project management, and sponsor communications.

Outside of work, Tamsin loves to spend time outdoors hiking, skiing, and swimming with family and friends in various places across Canada and beyond.