Stanko Manojlovic began his professional carer at NEK in 2013, where he first worked as a Safety Analysis Engineer within the Licensing and Analysis department. During this period he earned his Reactor operator license.  He later advanced to the position of Lead Licensing Engineer. This experience paved the way for his subsequent role as the Lead Long-term Operation Support Engineer.

His career continued in his appointment as Superintendent of the Support for Long-term Operation department. In this capacity, he has been responsible for overseeing activities related to NEK's long-term operation. Additionally during this period he was responsible as the Team Lead in charge of preparing the Root Cause Analysis for the SI-53 leak.