Mainframe architecture is the design of mainframe computers used for large-scale computing applications, such as data storage or customer statistics, as well as processing other types of bulk information. As a mainframe architect, your primary duties include designing mainframes (including servers) and ensuring that hardware and software work in harmony. The career typically requires a bachelor’s degree in computer science, computer architecture, or a similar field and relevant work experience. You may also obtain professional certification, such as from the International Software Testing Qualifications Board (ISTQB), to demonstrate your expertise and boost your job prospects. Additional qualifications include strong programming skills and analytical problem-solving ability.