I was firstly contacted by HR on LinkedIn and they asked me as a first screening to send a video presentation about myself. Afterwards, I had a number of interviews with a manager, and as a last step I had to study their documentation, and had a number of technical questions about the architecture and a kind of role play presentation. They told me they would give me a feedback ASAP, but they disappeared. I asked them if they could give me updates, but almost one month after the last interview they told me that they have no budget. Very disappointing experience.