SF Trigger for custom object

Closed - This job posting has been filled and work has been completed.

Job Description

I have two custom objects in SF:
I need to update a field (Project_manager__c) in my Implementation object with a value from Projects__c object field (Project_Manager__c) when the record is created, or updated.
I also need the class to test the trigger so I can move it from the Sandbox to Production once it passes.