Was sent an email asking me to complete a short tech challenge, probably took me ~4 hours to complete. After they reviewed my solution they invited me to an interview with two people from the software team. They discussed the company and role and we talked about my experience and had some discussion on my solution. Interview went well, after a couple of follow up emails I was told that the hiring team thought I would be a great fit and asked if I would be willing to relocate to Brisbane. I explained that I wouldn't, however I thought I could work well remotely. I then received no further responses despite following up multiple times. Communication in general was very poor from their HR department, but the software team seemed very friendly. Overall I was left with a pretty bad taste in my mouth after committing a fair amount of time to their interview process and having what felt like a very positive outcome on my interview. No response after this is unacceptable.