Looking for an object-oriented requirement analysis and system design team

To make the communication more efficiently, I would like to hire a good object-oriented requirement analysis and system team who are familiar with UML tools and methods. This team will: 1. Have meetings in english with me and my customers, to understand the business requirement and produce requirement specification documents using object-oriented methods; 2. Update the documents according to my review comments; 3. After sign the final version of requirement document, to have meetings with me and the programming teams, to ensure the programming team understand the requirements; 4. To help me to review the test cases the test teams produced, and give comments to the test teams. For the proposals, please give me one or two requirement and design samples you have produced for your previous projects.