middle management 
noun [mass noun]
The managers in an organization at a level between senior and junior managers.Despite growing evidence showing that downsizing middle management may reduce organizational flexibility and innovation, executives still appear to make this a frequent practice....
- Not only may there be differences of level within broad occupational categories - such as those between senior and middle management - but the kinds of enterprises in which people work have great significance.
- Our immediate intervention was to strengthen the capacity of senior and middle management in the revenue department.
Derivatives
middle manager
- There are courses for new managers, middle managers, senior managers, and executives.
- Foreign executives who might otherwise be at a cultural and linguistic loss have been able to rely on Chinese middle managers for quality control.
- Offices hummed as clerks and secretaries, executives and middle managers, accountants and bookkeepers scurried to attend their burgeoning enterprises.