An information systems manager is responsible for overseeing a company's computer systems, including installation, backups, purchasing hardware and software, and ensuring technology infrastructure meets user needs. They work in organizations of all sizes across industries, managing technicians, programmers, and administrators. While job titles may vary, core responsibilities include implementing technology, managing budgets, researching new systems, providing user support, and ensuring security, compliance, and system uptime. The role requires technical expertise as well as an understanding of business and management.