The very first computers were monstrous machines which filled warehouses; today's mainframes are the most direct surviving descendants of machines like ENIAC and, though they are exponentially faster and more capable (and often composed of many small machines working in tandem), the basic principle remains the same: dedicate a vast amount of computational power toward specific ends. Mainframe computer operators are responsible for putting these machines to work to solve whatever problems, or perform whatever tasks, which require such massive hardware to accomplish.
As skilled individuals who have an intimate understanding of computer systems, their work may include many responsibilities. In essence, they are translators in that they are given a task and must use their operational expertise to complete it using machinery. They must be proficient in the use of specialized hardware and software, both in the means of its operation and how to troubleshoot it when problems arise. They may work on teams or even supervise them; each individual employer has its own own array of responsibilities for the position. Because mainframes are utilized in almost all fields, from business to science and engineering, employers may search for variety of specializations among applicants.
To be a mainframe computer operator, one must have a strong grasp of computing principles and the resources he/she will be using. Employers typically prefer applicants who have an associate's degree or higher in a field such as computer science or information systems, as well as experience using a variety of hardware and software.
Computer Operator, Mainframe Tasks
Ensure the processes remain uninterrupted and the program jobs run as scheduled.
Oversee the computer mainframe and supporting system equipment.
Diagnoses and resolves system problems.