Hiring manager interview then reached the Manager interview where they were looking for a specific experience around consuming and processing data, data pipelines, scaling experience around that architecture with the same stack that they use

Technical interview experience was extremely concerning. Successfully completed their LeetCode technical screen with thorough discussion, testing, and 15 minutes remaining on the call. Later received a rejection email with feedback that I “did not complete” the exercise, and that explanations of the algorithm’s inner workings were considered a waste of time. Company's handling of feedback and clarification requests was unprofessional - avoiding direct answers, requiring management escalation and multiple internal discussions, and ultimately providing no clear explanation. Shows serious issues with their interview process and communication.