Veracode Principal Software Engineer interview questions

Accion Labs are their consultancy. I had total 5 calls 1) Recruiter 2) Manager(to check personal fit) 3) Technical Interview (Backend) 4) Technical Interview (Frontend) 5) Hiring Manager After all 4 successful interviews, they said I performed very well. But hiring manager said they are actually looking for a Full-stack Developer which I never claim I was and I told them from the beginning that I am a Frontend Developer. They wasted my 5 hours for nothing... They did not call to apologies or say at least something for wasting my time.

The interview process was straightforward and pleasant. I had a phone interview with the hiring manager and an on-site technical interview with 3 developers and the hiring manager. Each interview took 30 minutes. I was invited for another round of interviews with the VP of engineering and HR.