Managers at the lowest level The managers of small departments or deputies to departmental managers Junior managers usually serve as supervisors, but are usually supervised by senior managers and executives. Junior managers may serve as account executives on various projects, regardless of industry. In marketing and advertising, junior managers implement and oversee projects. They also supervise the work of nonmanagement employees, on the ongoing projects that are their responsibility. Junior managers may also serve as a direct point of contact between the client and the company.