nex×us \nek´ses\ noun CONNECTION, LINK Providing sustainable civil construction management builds trust between all stakeholders on any construction project. Nexus Construction Service Group is a pioneer in the field of site civil construction management for building owners, property developers, and general contractors alike. Nexus is the link that ensures out-of-the-ground construction projects get started on the right foot where, often, a project can get upside-down from the beginning.