Docusign Senior Software Engineer interview questions

I applied via company website and a recruiter contacted me after a week. He scheduled a phone interview with Director of Engineering to discuss the team for which they were looking for a full-stack developer and my experience. Then on-site interview was setup after a week. The on-site interview was a full day session with 5 different people with questions ranging from coding, algorithm, architectural discussion and data design to enhance basics of DocuSign product, and design pattern.

Horrible process, i had a telephonic interview initially and then waited for nearly 30 days to hear telephonic response and after 30 days HR called me and said due to some technical issue they forgot contacting me. Face to Face interview is one more horrible experience with some irrelevant questions and people who took some interviews are very unprofessional. Also, they do not know basics of computer fundamentals.