i failed an interview and was informed i was not to progress to second round

i cheekily asked for a feedback and to my surprised, they provided.

they said that they feel that i have not been through enough challenge to have the seniority required for the job

which reminds me... almost every interview they will always ask me to name a challenge that i face at work and how i overcome it

and i always give a very generic/boring thing i did at work.

now i found out how important that question is, the interviewer actually is using that question as a proxy to probe if you are been through enough to be considered a "senior"

so word of advice, if you are ever asked this question , make sure you brag about all the super difficult stuff you did