You do. All code, documentation, and work product created during the engagement belongs entirely to your organisation from day one. There are no strings attached and no delayed transfers of ownership.
This is a fundamental part of how team augmentation works. Because augmented engineers are contributing directly to your codebase within your repositories, the intellectual property is yours by default. Our agreements formalise this so there is no ambiguity.
Full IP ownership from the start gives you the freedom to use, modify, and build upon the work without restrictions, both during and after the engagement.