GIC Junior Data Engineer interview questions

Received an unpaid take home test to construct a graph-search algorithm, and develop a mock project that performs cloud migration of on-premise databases. As expected, it required at least 2 days of effort even for a seasoned developer. I must add that this process took 2-3 weeks and required multiple nudges to advance the interview. Was rejected without any feedback, I did not even see a single minute of human interaction during this application, disappointing.