UNITY project

We are developing a 3d model in Unity for a large area of land. This will have a series of GIS overlays and other information accessible as we interact with the model in Augmented Reality. We are looking for an experienced Unity Developer who can guarantee delivery in a very short time period and who has worked on many similar projects before. Minimum 5 years Unity experience would be required and good examples of similar projects. There are 3 milestones to be achieved. The first one is due next week, so this is very urgent. If successful, projects will be ongoing.