Odoo Consultant
An hour to understand the task before any code is written. It often turns out that configuration is enough and no module is needed.
What the hour covers
A look at the current configuration, a search for the standard way to get what you need, and an estimate of what each option would cost.
What is needed from you
A description of the process that should work, and access to the database, so the discussion is about real data rather than assumptions.
What usually comes out of it
That part of the task is already solved by configuration and the rest needs a module. Separating those two is the point of the consultation.
Further reading: Technical Audit of an Odoo Project — What to Check and How to Read the Report.