= personnel, n. 1a; (occasionally) a member of personnel.

The body of people employed in an organization, or engaged in a service or undertaking, esp. of a military nature; staff, employees collectively…

gen. A body of persons employed, under the direction of a manager or chief, in the work of an establishment or the execution of some undertaking…

= establishment, n. 10. Also attributive.

a common room for the use of the staff, as in a school; also transferred, the staff itself.

Construed as plural: members of a staff, employees. Rarely, an employee.

Computer personnel, as opposed to the software and hardware they work with; (more widely) people, in contrast to machines or technology.