An application- or software tester is a very important member of the team. He or she keeps his or her hand on the pulse and meticulously tests all variants of the emerging pages or project views.
In a nutshell, it can be said that a manual tester conducts functionality tests and detects all bugs and defects to then report corrections to the developers. All websites, software, applications or games go through this process - often more than once.
The tester's tasks also include creating scenarios for individual tests. This is a step towards streamlining work and following a specific plan. After all, no party can be left out.
In their everyday work, manual testers check the website or application for
correctness,
efficiency,
reliability,
security system.