Ask HN: What do you look for in a software engineering candidate?

Hi HN, I am at my wits end trying to find a job and considering giving up. I graduated 11 months ago from a leading university, an active contributor and open source maintainer on Github (with libraries of my own) and have written apps that is live on the App Store. Been doing over 20 algorithm challenges a day (10 on leetcode, 10 on HackerRank) and I still keep getting no response or an immediate rejection from companies big and small. Went through one company which lead me on with first a phone interview then a hacker rank challenge then a take home project then a onsite interview with a whiteboard programming challenge and a final interview. I never heard back from them, only to find out later on that I had been rejected without them telling me! For me this has happened so many times that this was the last straw for me after 30+ interviews from several companies I applied for. It's getting to the point that I'am seriously considering ending my job search and I am tired of