Univeris interview questions

I had a couple of interviews and then they gave me a written assignment to do user story mapping exercise for a particular scenario. I spent about an hour creating that and since I had done user story mapping multiple times before I was quite confident I had done well. After nearly an hour of painstaking work that is typically done in a group setting I submitted it at the desk and after that I heard nothing from them. It was quite shameful how they use people to get some work done for their company. I later did some research and I realised that the team lead who I might be reporting to had less experience than me and maybe this was their way of getting inputs from more experienced people to help support a less experienced lead.