system program
noun
a program, as an operating system, compiler, or utility program, that controls some aspect of the operation of a computer (opposed to application program).
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
He said new system programming and the time it took to ensure accurate calculations delayed seeking reimbursement.
From Seattle Times ● Mar. 24, 2018