Had 4 rounds of interviews. 1st technical screening with HR, 2nd technical Interview with Sr. Labview Engineer, 3rd PPT presentation with Sr. Labview engineer and Director of Project Management and 4th Technical Interview with Labview Engineer. Everything went well and then they started to ghost me at end. After 3 weeks the HR replied that the Sr. Labview Engineer has left and now they want to hire a Sr. Labview Engineer.