3 rounds, last round was a loop interview of 4 hour long interviews. Every single interview involved a coding exercise. I had to take a fake sick day from my current job to do the loop interview. Even after all that, they just gave me an automated rejection message. When I reached out to the recruiter asking for feedback, I got no response. I don't appreciate companies that treat me like my time is worthless.

Describe how you would build bit.ly.