Software testers ensure that an application is free of errors and conforms to the functional requirements specified by their clients. To do this, they develop and execute test cases to assess new software applications and system modifications. They identify defects using bug tracking systems and document these in databases.
They also conduct historical analyses of the results of these test cases. Once the test is done, they report defects and provide feedback to developers. While most of the tasks they do are completed independently, they still need to collaborate with other testers, developers, and clients for effective software testing.