Quality assurance engineers monitor and keep a clear track of the project in different phases of its development to final testing until it reaches the next level. They make sure that the product being developed meets the pre-determined standards, specifications, and is in tune with its purpose of development. QA engineers make sure that there is no compromise in the quality and functionality or deviation from the vision during the process, along with timely feedback at every stage of its development. The main goal of the QA engineer is to deliver exactly what was promised to the clients.