Beyond Co Senior Software Engineer interview questions

Interview process was 3 parts: 1. Initial phone screening with one of the recruiting team which lasted about 30 mins. Was told I would be given a technical challenge. 2. Technical challenge that included working with their API. After sending it off I didn't get any confirmation they'd received it for quite some time. 3. Chat with engineering manager about my technical solution and experience. The recruitment team attempted to deliver feedback by phone but was unable to get through to me. It would have been helpful if they could have told me when they would call. They were never available when I called back. After a few emails I finally got a rejection and that they'd gone with another candidate.