Instacart Software Engineer interview experience

It was a multi-stage coding question, and I worked through the full thing all the way to an optimal solution, with all the test cases passing. As I went, I verbally walked through my strategy and thought process. The interviewer seemed to agree that everything worked and that it was the right approach.

Two days later, I received a generic rejection email from the recruiter with no feedback at all. I reached out asking for details on what didn’t land, and after that I basically got ghosted. That left me frustrated more than anything, because the effort I put in seemed to disappear into