Documentation and Testing Needed

I'm in need of an individual with proficient skills in technical writing and software testing. I have a system at hand but unfortunately, I'm unsure of the category it falls under. Below are the main tasks to be executed:

- Documenting the system process and operations
- Rigorous system testing to spot any inaccuracies or inefficiencies

The freelancer should ideally:

- Be highly experienced in both software documentation and testing
- Be determined, displaying an ability to troubleshoot issues that may arise from the system
- Show remnants of past work, highlighting their capabilities and proficiency

A comprehensive proposal would be greatly appreciated. Let's enhance the system efficiency and user experience together.