I think they can be more simply and clearly expressed:
Successful accomplishment of the tasks will guarantee sufficient learning experience and repeatable implementation processes. How can "Successful accomplishment" of tasks "guarantee sufficient learning experience and repeatable implementation processes" - and what are these?
Success in the tasks will provide a good learning experience and establish working methods/processes.
Our personal development should keep pace with the increasing job-related requirements.
Personal development should keep pace with job-related requirements.
Each employee will find out that anything can happen in the working life and that career does not follow the same trajectory any longer.
Each employee will discover that their working life and their career can change.