WhatsApp Software Engineer interview questions

It was okay... not sure what they expect. I'm pretty sure I gave a good answer. took some time to come up with a solution - maybe that was the reason why. But i felt like in the end, I gave a solid solution.

Received a boilerplate message via LinkedIn from the Whatsapp recruiter (I am not allowed to share her/his name). I said that I am interested, but all of my messages were ignored (even after months). That's very unprofessional behavior for on-site recruiter.