OTIE is a brand that offers full-service, multi-discipline engineering, science, and construction management solutions. As a subsidiary under the Oneida ESC Group, OTIE is owned by the Oneida Nation of Wisconsin. With over 25 years of experience, OTIE has a proven track record of successful project delivery.

Their services include facility and infrastructure engineering design, environmental remediation and science, and construction management. They have worked with various clients, including the US Army Corps of Engineers, US Air Force, and US Navy, as well as civilian agencies such as the US Environmental Protection Agency and USDA Forest Service. OTIE's team of professionals provides practical, cost-effective, and innovative solutions to meet customer needs.

Their expertise includes facility engineering design, infrastructure engineering, remediation and restoration, natural resources and environmental compliance, construction and demolition, as well as technical services. Overall, OTIE strives to preserve, restore, and enhance the natural and constructed environment for future generations through their successful project delivery and commitment to customer satisfaction