Historically, there has been a disconnect between engineers and ecologists when it comes to understanding the guiding principals that regulate processes in engineered systems. However, a recent explosion of research into the “built” environment suggests that, in spite of this reigning paradigm, ecological theory may be absolutely necessary in understanding the function and stability of processes underlying everything from wastewater treatment to biofuels. Considering the close connection between engineered systems and humans, ecologists clearly can have a huge impact on improving human health and well-being. This Ignite session intends to highlight some of the new and exciting ways in which ecologists and ecological theory are working to understand and improve engineered systems. Speakers can take a variety of approaches, such as 1) introducing a currently under-appreciated engineered system and proposing new ways of applying ecological principals; 2) demonstrating, using a case study, the utility of ecological theory in engineered systems; or 3) defining an application approach. Some possible topics include building design and architecture, urban planning and landscape design, bioenergy, food production systems, and water and wastewater treatment. Talks that demonstrate beneficial cross-talk between ecologists and engineers are encouraged, especially those that have led to shifts in teaching and education.