As a NES, but not a teacher:
I would have preferred using the term "various" rather than "different".
As the period extends over some 9-years, I would suggest that you may be advised to identify, if not the actual organisations involved, at least the type of organisations and the type of data being processed - e.g. sales records, financial invoices, manufacturing data, etc. and the number of years experience in each particular field, together with any special responsibilities/achievements.
Hope this helps
Student or Learner