A systems manager is responsible for overseeing the secure operation of computer software and information technology systems used by a business. In this career, you use your computer skills to design, implement, and streamline a company’s IT systems. Your duties may also include training staff in the use of new software or technology. This job requires continuously monitoring existing networks for security and efficiency. Senior systems manager positions require five or more years of experience. Entry-level qualifications include a bachelor's degree in information technology or a related field of study.