Fortinet Senior Software Engineer interview questions

Fortinet supports a very fast interview process. I even started an interview with it after I got a job approval notice from other company, but their's processes ended at the same time.

Was called by the HR 1.5 months after getting referred from a friend of mine and I should say, I am sadly disappointed with the overall experience. Was asked about my work and various questions related to backend, website performance, rest api's and interview was also good but final feedback was that the feedback from the interviewer was negative and he thought that I lacked skills in jquery whereas not a single question was asked from that domain. I was stunned and felt like the interviewer or the HR didn't like my face. A serious disappointment from such a big organization.