Modern Health interview questions

I was reached out by a recruiter on LinkedIn. They offer 2 options for the initial interview. I chose the take home assesment one. It was an easy one and I passed it. On the next step, we reviewed the code with one of the engineers. (He didn't even know some of commonly used methods. I explained him during the interview.) They wanted to move forward and set up a meeting with 5 of their employees in a day. (It took consecutive 5 of hours of mine in a day excluding 1 hour of break at lunch) Interviewers were nice people and I think overall it passed so well. After a week I received a rejection mail. They told me that they were looking for a more senior person. But none of the interviewers were senior level. (They are hiring senior levels with mid levels I guess). Overall it was an awful interview experience.