Can you try the following steps.
1) Create new Sitefinity project using the project manager.
2) Open the project in Visual Studio and add a reference to the Jobs.dll.
3) Go to the project's backend and when adding the module for StartupType type OnApplicationStart and make sure that the Install checkbox is selected.
4) Save your changes and restart the website by making a dummy edit in the web.config.
All the best,
the Telerik team
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