At first, I had a call with the recruiter, which was awesome.

He explained the general process: a chat with the hiring manager, possibly a take-home coding test, and then an on-site interview.

I had a call with the hiring manager, which I felt went great. The recruiter emailed me afterward and said he received positive feedback. He promised to get back to me the following week with the next steps.

After a month of no contact, I reached out to inquire about how things were going. I received no reply.

I was completely ghosted by the recruiter – not even a "we are sorry, but we moved forward with another candidate" type response.

To me, this is very unprofessional.

What was the most challenging project you worked on?