Engineers that design things follow a formal process called the engineering design process. The engineering design process is a tool engineers use to create products and make sure the products work as expected. This short video explains the engineering design process. This is a graphic that explains the engineering design process: (click here for larger view)
If you don't follow the engineering design process, this is typically what happens: communications problems and things do not work as expected:
Stakeholders need to agree on the goals and objectives that some system is supposed to produce. Once you agree on the requirements, you build a working prototype to make sure you can get the system to work and you can go back to check with the stakeholders to be certain the system is working as the stakeholders expect. As I pointed out, you have to comply with the Law of Conservation of Complexity and the Law of Irreducible Complexity.
This is how computational professional services will get created and built out. There are no short cuts. Engineering 101.