His research considers how toxic pollutants impact human and environmental health.

He joined the University of Tennessee as a doctoral student working on environmental microbiology and microbial ecology.

In 1998, Ogunseitan was made a Josiah Macy Jr. Foundation Fellow at the Marine Biological Laboratory.

[2] His research considers the evaluation of risk factors that damage human and environmental health, including electronic waste.

[1][3] Ogunseitan was the founding chair of the University of California, Irvine Department of Population Health & Disease Prevention (2007-2019).