Checkout.com Senior Software Engineer interview questions

Checkout applied to interview me. I graciously accepted, and asked a few introductory questions. The Checkout.com person blatantly ignored them and sent me a very terse "ok we'll call you at X tomorrow". I waited until that time, had my headphones in, waited for my phone to ring - as per the calendar invite - someone was to call me on my cell. A few minutes after the interview "started", I received an email with a zoom link. I of course, didn't see this in time, so I replied, apologising, but asking for clarification. The person came back with a reply that can only be deemed snarky, implying that I was a) not aware of zoom, and b) unable to read. This demonstrated a serious lack of professionalism and I couldn't help but question whether this is the sort of place it'd be worth taking my talents.

Had a brief phone screen, followed but a call with an engineer with (mostly) behavioural/culture fit questions. Was then given a take-home task, to be done in around a week, which is a red flag for a company this size.