The OESC is a civil engineering firm based in Lebanon with branch offices in Abu Dhabi and Saudi Arabia. The company is currently expanding in a number of countries within the Middle East region.

Founded in 1994, the company have been offering an extensive list of Geotechnical Engineering, Specialized Structural Engineering and Materials Testing services to the public and private sectors. As a multi-disciplined firm of specialized engineers, geologist, field and laboratory technicians, and supporting clerical personnel, the company combines the technical capabilities, experience and dedication of its staff to offer professional services through integrated team efforts.