Hello,
Please use one of the available commonly used job grading models (e.g., WMM's IPE, HAY, Decision Banding Model, etc.). Please keep in mind that the job grading exercise forms the basis of the organizational structure that evolves at a later stage. It is imperative that you get the process established correctly - it may require a lot of groundwork, which must be done diligently. Going forward, the salary structure that evolves should also align as much with the organization's objectives as with the aspirations of the employees. The employee perspective should be developed through communication. If you have data from a satisfaction survey, please sift through it meticulously to address all the issues that may arise or lead to the issue of job/employee grades. Obviously, simplicity will be an added advantage.
Regards,
mxsingh