If you describe something as unsatisfactory, you mean that it is not as good as it should be, and cannot be considered acceptable. 不能令人满意的
adjective [原级]不令人满意的;不满足的;不符合要求的
There are also, of course, people who interview extremely well, but are later found to be very unsatisfactory employees. 当然,也有面试表现非常好的人,但后来发现是非常不令人满意的员工。